Cascaded filters, multiplexers, and wireless communication devices with harmonic suppression

Abstract

The present invention provides a hybrid elastic LC filter, multiplexer, wireless communication device, and method with harmonic suppression. [Solution] In a radio frequency system including filter 230, the hybrid elastic LC filter includes a hybrid passive / elastic filter and an inelastic LC filter cascaded to the hybrid passive / elastic filter. The hybrid passive / elastic filter filters the radio frequency signal and includes a plurality of elastic resonators and one inelastic passive component. The inelastic LC filter suppresses harmonics of the radio frequency signal. The inelastic LC filter may be, for example, a low-pass filter or a harmonic notch filter.

Description

Technical Field

[0001] Embodiments of the present disclosure relate to hybrid elastic LC filters.

[0002] Cross-reference to Priority Applications Any and all applications identified as having foreign or domestic priority claims in the application data sheet filed with this application are hereby incorporated by reference in accordance with 37 C.F.R. § 1.57. This application claims the benefit of priority under 35 U.S.C. § 119(e) of U.S. Provisional Patent Application No. 62 / 700,142, entitled “Hybrid Elastic LC Filter with Cascaded Connection in an LC Filter,” filed on Jul. 18, 2018, U.S. Provisional Patent Application No. 62 / 700,148, entitled “Parallel Hybrid Elastic Passive Filter,” filed on Jul. 18, 2018, and U.S. Provisional Patent Application No. 62 / 700,146, entitled “Hybrid Elastic LC Filter with Harmonic Suppression,” filed on Jul. 18, 2018. The entire disclosure of each of these priority applications is hereby incorporated by reference.

Background Art

[0003] An elastic wave filter may include a plurality of resonators arranged to filter radio frequency signals. The elastic resonators can be arranged as a ladder filter for filtering radio frequency signals. Examples of elastic wave filters include surface acoustic wave (SAW) filters and bulk acoustic wave (BAW) filters. Elastic wave filters can be implemented in radio frequency electronic systems. For example, the filter in the radio frequency front end of a mobile phone may include an elastic wave filter. ​​​​​​​​​​​​​​​​​​​​​​​​​​​​

[0004] The LC filter includes at least an inductor and a capacitor. The LC filter is passive It is an inelastic filter containing components. An LC filter filters radio frequency signals. It can be tagged.

[0005] Filtering relatively high frequency radio signals to achieve strict filtering specifications It may become difficult to satisfy this condition. Therefore, filtering relatively high-frequency signals... An improved filter is desired to meet the performance specifications. [Overview of the project]

[0006] Each of the innovations described in the claims has several aspects, and each of them Not only one of the Germans is involved in the desired attribute. Limiting the scope of the claims. Without further ado, some of the outstanding features of this disclosure are outlined below.

[0007] One aspect of this disclosure is a cascaded filter for filtering radio frequencies. It is a filter. The cascaded filters are a hybrid elastic LC filter and The hybrid elastic LC filter is cascaded with an inelastic LC filter. A hybrid elastic LC filter is configured to filter radio frequency signals. The hybrid elastic LC filter consists of a first elastic resonator on an elastic resonator die and a second elastic resonator. A vibrator, a capacitor located outside the elastic resonator die, and outside the elastic resonator die It includes an inductor. An inelastic LC filter includes an LC circuit.

[0008] The hybrid elastic LC filter further includes a second inductor in parallel with the second elastic resonator. It may include. Here, the second elastic resonator is arranged as a shunt resonator in series with an inductor arranged.

[0009] The first elastic resonator and the second elastic resonator may be shunt resonators. The capacitor and the in ductor can be arranged as an LC tank coupled between the first elastic resonator and the second elastic resonator can be.

[0010] The first elastic resonator can be coupled to a node in the signal path between the LC circuit and both the inductor and the capacitor.

[0011] The first elastic resonator and the second elastic resonator may be bulk acoustic wave resonators. For example, the first elastic resonator and the second elastic resonator may be thin film bulk acoustic wave resonators.

[0012] The LC circuit of the non - elastic LC filter can include an integrated passive device on an integrated passive device die. The inductor of the hybrid elastic LC filter may be a surface - mount inductor. The inductor of the hybrid elastic LC filter may include a conductive trace of a substrate. The integrated passive device can include an LC shunt circuit and a series LC resonance circuit.

[0013] The LC circuit of the non - elastic LC filter can include a series LC resonance circuit and an LC shunt circuit . The series LC resonance circuit can include a parallel LC circuit. The LC shunt circuit can include a series LC circuit . The LC circuit of the non - elastic LC filter can further include a second shunt - series LC circuit .

[0014] The passband of the cascade - connected filter can be set by the non - elastic LC filter ​​It can be arranged to provide blocking in frequency bands outside the passband. The lower limit of the passband may be at least 3 gigahertz. The passband can extend from at least 3.3 gigahertz to 4.2 gigahertz. It can be. The lower limit of the passband may be at least 3 gigahertz. The passband can extend from at least 3.3 gigahertz to 4.2 gigahertz.

[0015] Another aspect of the present disclosure is a multiplexer including a first filter coupled to a common node and a second filter coupled to the common node. The first filter is configured to filter a radio frequency signal. The first filter includes a hybrid elastic LC filter and an inelastic LC filter cascade-connected to the hybrid elastic LC filter. The hybrid elastic LC filter includes a first elastic resonator on an elastic resonator die, a second elastic resonator, a capacitor outside the elastic resonator die, and an inductor outside the elastic resonator die. The multiplexer may further include a third filter coupled to the common node. The second filter may include a second hybrid elastic LC filter. The second filter may include a second inelastic LC filter. The multiplexer may further include a third filter coupled to the common node. The second filter may include a second hybrid elastic LC filter. The second filter may include a second inelastic LC filter. The multiplexer may further include a third filter coupled to the common node. The second filter may include a second hybrid elastic LC filter. The second filter may include a second inelastic LC filter. The multiplexer may further include a third filter coupled to the common node. The second filter may include a second hybrid elastic LC filter. The second filter may include a second inelastic LC filter. The multiplexer may further include a third filter coupled to the common node. The second filter may include a second hybrid elastic LC filter. The second filter may include a second inelastic LC filter.

[0016] Another aspect of the present disclosure is a wireless communication device including an antenna and a radio frequency front end communicating with the antenna. The radio frequency front end includes a filter configured to filter a radio frequency signal for the purpose of transmission via the antenna. The filter includes a hybrid elastic LC filter and an inelastic LC filter cascade-connected to the hybrid elastic LC filter. The hybrid elastic LC filter includes an elastic resonator on an elastic resonator die, a capacitor outside the elastic resonator die, and an inductor outside the elastic resonator die. The hybrid elastic LC filter includes an elastic resonator on an elastic resonator die, a capacitor outside the elastic resonator die, and an inductor outside the elastic resonator die.

[0017] Another aspect of the present disclosure is a wireless communication device including an antenna and a radio frequency front end communicating with the antenna. The radio frequency front end includes a filter configured to filter a radio frequency signal for the purpose of transmission via the antenna. The filter includes a hybrid elastic LC filter and an inelastic LC filter cascade-connected to the hybrid elastic LC filter. The radio frequency front end includes a filter configured to filter a radio frequency signal for the purpose of transmission via the antenna. The filter includes a hybrid elastic LC filter and an inelastic LC filter cascade-connected to the hybrid elastic LC filter. The radio frequency front end includes a filter configured to filter a radio frequency signal for the purpose of transmission via the antenna. The filter includes a hybrid elastic LC filter and an inelastic LC filter cascade-connected to the hybrid elastic LC filter. The filter includes a hybrid elastic LC filter and an inelastic LC filter cascade-connected to the hybrid elastic LC filter. The hybrid elastic LC filter includes an elastic resonator on an elastic resonator die, a capacitor outside the elastic resonator die, and an inductor outside the elastic resonator die. The hybrid elastic LC filter includes an elastic resonator on an elastic resonator die, a capacitor outside the elastic resonator die, and an inductor outside the elastic resonator die. This includes an inductor located outside the die.

[0018] A wireless communication device can be used as a mobile phone.

[0019] Another aspect of this disclosure is a cascaded filter circuit for radio frequency filtering. Yes, there are hybrid elastic LC filters and inelastic LC filters that include LC circuits. The hybrid elastic LC filter and the inelastic LC filter are configured to selectively couple. Includes a switch. The hybrid elastic LC filter filters radio frequency signals. It is configured to perform taring. The hybrid elastic LC filter has elasticity on the elastic resonator die. A resonant cavity, a capacitor located outside the elastic resonant cavity die, and the outside of the elastic resonant cavity die Includes an inductor located there.

[0020] The cascaded filter circuit further includes a second inelastic LC filter. Here, The switch combines a hybrid elastic LC filter and an inelastic LC filter in the first state. The switch is configured to perform the following actions: in the second state, the hybrid elastic LC filter and It is configured to combine two inelastic LC filters. The inelastic LC filters are a transmit filter and This is acceptable, and the second inelastic filter may be used as a receiving filter.

[0021] The cascaded filter circuit further includes a second inelastic LC filter. Here, The switch combines a hybrid elastic LC filter and an inelastic LC filter in the first state. The switch is configured to perform the following actions: in the second state, the hybrid elastic LC filter and It is configured to couple two inelastic LC filters.

[0022] The hybrid elastic LC filter further includes a second inductor in parallel with the elastic resonator. It can be seen. Here, the elastic resonator is arranged as a shunt resonator in series with the inductor. ru.

[0023] A hybrid elastic LC filter may further include a second elastic resonator. The second elastic resonator may be a shunt resonator. The capacitor and inductor are elastic resonators. It can be arranged as an LC tank between the chamber and the second elastic resonator. Hybrid elastic The LC filter further includes a second inductor connected in series with the first elastic resonator, and the second elastic resonator This may include a third inductor connected in series with it.

[0024] The elastic resonator can be a bulk elastic wave resonator.

[0025] The LC circuit of an inelastic LC filter may include an integrated passive device in an integrated passive device die. The inductor of the hybrid elastic LC filter may be a surface-mount inductor. The inductor of a hybrid elastic LC filter may include conductive traces on the substrate.

[0026] Cascaded filters including inelastic LC filters and hybrid elastic LC filters The passband can be set by an inelastic LC filter. The lower limit of the passband is It can be at least 3 gigahertz.

[0027] Another aspect of this disclosure is a method for filtering radio frequency signals. The method involves a hive This includes coupling a lid elastic LC filter and an inelastic LC filter by a switch. The hybrid elastic LC filter comprises an elastic resonator on an elastic resonator die and the elastic resonator It includes a capacitor located outside the die and an inductor located outside the elastic resonator die. The method also involves combining a hybrid elastic LC filter and an inelastic filter. This includes filtering radio frequency signals in between.

[0028] The method further involves switching a hybrid elastic LC filter to an inelastic LC filter. Decoupling from and switching the hybrid elastic LC filter and the second non-elastic filter. The method may include coupling a property LC filter. The method further involves a power amplifier, wirelessly By applying the frequency signal to an inelastic LC filter and using a low-noise amplifier, a second inelastic filter is created. This may include amplifying the filter signal provided by the filter.

[0029] Filtering is done using the elastic resonator of a hybrid elastic LC filter. The passband of the filter including the hybrid elastic LC filter and the inelastic LC filter This may include providing a barrier.

[0030] Radio frequency signals may have frequencies in the range of 3 gigahertz to 5 gigahertz.

[0031] Other aspects of this disclosure include an antenna and a radio frequency front end that communicates with the antenna. It is a wireless communication device that includes the radio frequency front end, which transmits via the antenna. It includes a filter configured for filtering radio frequency signals. The filters are a hybrid elastic LC filter, an inelastic LC filter, and a hybrid elastic LC filter. It includes a switch configured to selectively couple a filter and an inelastic LC filter. A hybrid elastic LC filter comprises an elastic resonator on an elastic resonator die and the elastic resonator die. Includes LC components located outside of (i).

[0032] A wireless communication device can be used as a mobile phone.

[0033] Another aspect of this disclosure is a first subfilter and a second subfilter coupled in parallel to the first subfilter. It is a parallel hybrid elastic passive filter including a subfilter. The first subfilter is the It includes an elastic resonator and a first inelastic passive component. The second subfilter is a second elastic Includes a resonator and a second inelastic passive component. First subfilter and second subfilter The 'TA' elements are arranged together to filter radio frequency signals.

[0034] The first and second subfilters are band-pass filters having a passband. They can be arranged together. The frequency response of the parallel hybrid elastic passive filter is the first subf. A first sub-passband corresponding to the filter, and a second sub-passband corresponding to the second sub-filter, This includes a notch at the notch frequency between the first sub-passband and the second sub-passband.

[0035] The first and second subfilters are band-stop filters having a stopband. They can be arranged together. A band-stop filter may have a notch in the stopband.

[0036] The first subfilter may include a bulk acoustic wave resonator containing an elastic resonator.

[0037] The first inelastic passive component may include a first inductor and a second inductor. Here, the first inductor is connected in parallel to the elastic resonator, and the elastic resonator is connected in parallel to the second inductor. They are arranged as a series of shunt resonators.

[0038] The first sub-filter may further include an additional elastic resonator. Here, the first elastic resonator and The additional elastic resonator is a shunt resonator, and the first inelastic passive component is the first elastic Capacitors arranged as LC tanks coupled between the resonator and the additional elastic resonator, and Includes an inductor.

[0039] The second inelastic passive component may include an integrated passive device.

[0040] The first and second subfilters may have different passbands. Parallel hybrid The lower limit of the passband of the elastic passive filter may be at least 2 gigahertz.

[0041] Another aspect of this disclosure is a multiplexer having parallel hybrid elastic passive filters. The multiplexer consists of a first filter connected to a common node and a second filter connected to the same common node. It includes a second filter. The first filter is designed to filter radio frequency signals. It is constructed as follows: The first filter includes a first subfilter placed in parallel with the second subfilter. The first subfilter includes a first elastic resonator and a first inelastic passive component. The filter includes a second elastic resonator and a second inelastic passive component.

[0042] The first filter may be a band-pass filter. The frequency response of the first filter is the first sub A first sub-passband corresponding to the filter, and a second sub-passband corresponding to the second subfilter. and a notch at the notch frequency between the first sub-passband and the second sub-passband. The second filter may be a band-stop filter.

[0043] The first filter is a band-stop filter having a stopband and a notch within the stopband. That is acceptable.

[0044] The second filter may include other elastic resonators and other inelastic passive components.

[0045] The first filter may have a first passband. The second filter may have a second passband. The first passband has a lower edge that exists at a higher frequency than the upper edge of the second passband. obtain.

[0046] The multiplexer may further include a third filter coupled to a common node.

[0047] The multiplexer further includes a shared filter in series between the first filter and the common node. This may include the following: Here, the shared filter is also serialized between the second filter and the common node. A shared filter can be used as a high-pass filter.

[0048] Other aspects of this disclosure include a radio frequency front end and communication with said radio frequency front end. It is a wireless communication device that includes a transmitting antenna. The radio frequency front end is a radio frequency front end. It includes a filter configured to filter the wavenumber signal. The filter is a second subf It includes a first subfilter in parallel with the filter. The first subfilter includes a first elastic resonator and It includes a first inelastic passive component. The second subfilter includes a second elastic resonator and a second inelastic passive component. Includes elastic passive components.

[0049] Another aspect of this disclosure is a multiplexer having a hybrid elastic passive filter. A lutiplexer is configured to filter each radio frequency signal. A filter and a shared filter that is connected between each of the multiple filters and a common node. It includes a filter and a radio frequency filter connected to the common node. The filters have different passbands. At least the first filter of the multiple filters is multiple It includes an elastic resonator and one inelastic passive component.

[0050] Multiple filters may include a first filter, a second filter, and a third filter. The filter may be a first band-pass filter having a first passband. The second filter is the A second band-pass filter having two passbands may be used. The third filter has a first passband and It may be a band-stop filter having a stopband that includes a second passband.

[0051] A shared filter can be used as a high-pass filter. A radio frequency filter is a low-pass filter. That is acceptable.

[0052] The shared filter may be an inelastic LC filter. The shared filter has multiple second elastic resonances It may include a vessel and one LC component.

[0053] The inelastic passive component is arranged in parallel with the first elastic resonator of the elastic resonator. It may include Kuta.

[0054] Elastic resonators can be embedded in elastic resonator dies. Inelastic passive components are , an inductor located outside the elastic resonator die, and a capacitor located outside the said elastic resonator die It may include Ta.

[0055] The second filter of the multiple filters consists of multiple second elastic resonators and one second inelastic passive capacitor. It may contain a component. The first filter has a first passband, and the second filter has a second passband. It may have a range. Both the first and second passbands are from 2 gigahertz to 5 gigahertz. The frequency range may be 2 gigahertz. Both the first and second passbands are 2 gigahertz. The frequency range may be from 3 gigahertz.

[0056] Multiplexers can be arranged as quadplexers.

[0057] Other aspects of this disclosure include a wireless communication system including an antenna and a multiplexer that communicates with the antenna. It is a signaling device. A multiplexer filters each radio frequency signal. Multiple filters configured for this purpose, and between each of these filters and a common node It includes a combined shared filter and a radio frequency filter combined to the common node. Multiple filters include a first filter comprising multiple elastic resonators and one inelastic passive component. Includes ruta.

[0058] The second filter of the multiple filters consists of multiple second elastic resonators and one second inelastic passive capacitor. It may include a port. Wireless communication devices use carrier aggregation at a common node. It can be configured to support the first carrier aggregation. This may include a rear and a second carrier. Here, the first carrier is the first passband of the first filter. The second carrier is located within the region, outside the first passband, and through the second filter. It is overband.

[0059] Another aspect of this disclosure is a multiplexer having a hybrid elastic passive filter. The lutiplexer includes a first filter and a second filter having different radio frequency passbands. Multiple filters, and a common node connected between each of those filters and a common node. It includes a high-pass filter and a low-pass filter coupled to the common node. The filter includes multiple first elastic resonators and one first LC circuit. The second filter includes multiple It includes a second elastic resonator and a second LC circuit.

[0060] Multiple filters further include band-stop filters, including the passbands of the first and second filters. It may include a filter.

[0061] Another aspect of this disclosure is a hybrid elastic LC filter with harmonic suppression. A lid elastic LC filter is a hive filter configured to filter radio frequency signals. A lid passive / elastic filter and a hybrid passive / elastic filter cascaded together It includes an inelastic LC filter. The hybrid passive / elastic filter has multiple elastic resonances. The apparatus includes a device and a single inelastic passive component. The inelastic LC filter transmits radio frequency signals. It is designed to suppress harmonics.

[0062] An inelastic LC filter can be used as a notch filter. The frequency response of a notch filter is: It may have a notch corresponding to the second harmonic of the line frequency signal. The frequency response of the notch filter is It may have two notches corresponding to different harmonics of the radio frequency signal.

[0063] Inelastic LC filters can be used as low-pass filters.

[0064] The inelastic LC filter may include an integrated passive device in an integrated passive device die.

[0065] Elastic resonators may include bulk elastic wave resonators.

[0066] The inelastic passive component may include a first inductor and a second inductor. The vibrator consists of a first shunt projectile arranged in series with the first inductor and in parallel with the second inductor. It may include a resonant chamber.

[0067] The elastic resonator may include a first shunt elastic resonator and a second shunt elastic resonator. The passive component is connected between the first shunt elastic resonator and the second shunt elastic resonator. It may include combined LC tanks.

[0068] Another aspect of this disclosure is a first filter configured to filter radio frequency signals. A multiplexer including a second filter coupled to the first filter at a common node. The first filter is a hybrid passive / elastic filter and the hybrid passive / Includes an elastic filter and a cascaded inelastic LC filter. Hybrid passive / The elastic filter includes multiple elastic resonators and one inelastic passive component. A C filter is configured to suppress harmonics in radio frequency signals.

[0069] The second filter includes a plurality of second elastic resonators and one second inelastic passive component. Obtain. The first filter may be an intermediate-band filter, and the second filter may be a high-band filter. The multiplexer further applies the first and second filters at the common node. It may include coupled low-bandwidth filters.

[0070] The inelastic LC filter may include an integrated passive device in an integrated passive device die.

[0071] The inelastic passive component may include a first inductor and a second inductor. The vibrator consists of a first shunt projectile arranged in series with the first inductor and in parallel with the second inductor. It may include a resonant chamber.

[0072] The elastic resonator may include a first shunt elastic resonator and a second shunt elastic resonator. The passive component is connected between the first shunt elastic resonator and the second shunt elastic resonator. It may include combined LC tanks.

[0073] Elastic resonators may include bulk elastic wave resonators.

[0074] Other aspects of this disclosure include a radio frequency front end and communication with said radio frequency front end. It is a wireless communication device that includes a transmitting antenna. The radio frequency front end is a radio frequency front end. It includes a filter configured to filter the wavenumber signal. The filter is hybrid A passive / elastic filter and a hybrid passive / elastic filter cascaded to the said hybrid passive / elastic filter Includes an LC filter. The hybrid passive / elastic filter has multiple elastic resonators and one It includes an inelastic passive component. The inelastic LC filter suppresses harmonics in radio frequency signals. It is designed to control. The antenna filters radio frequency signals with harmonics suppressed. It is configured to send the updated version.

[0075] A wireless communication device may be configured as a mobile phone.

[0076] The wireless communication device may further include a baseband processor and a transceiver. Here, The transceiver communicates with the radio frequency front-end and also with the baseband processor. I believe.

[0077] For the purpose of summarizing this disclosure, certain aspects, benefits, and novel features of this innovation are described herein. It has been described in [the document]. It is understandable, but not all of such advantages are necessarily [one of the advantages]. This is not achieved in any particular embodiment. Therefore, this innovation , one or a group of advantages taught herein, other advantages taught or suggested herein It can be embodied or implemented in a manner that achieves or optimizes the goal, without necessarily achieving it. Cut. [Brief explanation of the drawing]

[0078] Multiple embodiments of this disclosure are described by non-limiting examples with reference to the accompanying drawings.

[0079] [Figure 1] Figure 1A is a schematic block diagram of a cascaded filter including a hybrid elastic LC filter and an LC filter according to one embodiment. Figure 1B is a schematic block diagram of a radio frequency system including a cascaded filter in the signal path between a power amplifier and an antenna according to one embodiment. Figure 1C is a schematic block diagram of a radio frequency system including a cascaded filter in the signal path between an antenna and a low-noise amplifier according to one embodiment. [Figure 2] Figure 2A is a schematic block diagram of a cascaded filter circuit including a hybrid elastic LC filter coupled to an LC filter via a switch according to one embodiment. Figure 2B is a schematic block diagram of a cascaded filter circuit including an LC filter coupled to a hybrid elastic LC filter via a switch according to one embodiment. [Figure 3] Figure 3A is a schematic block diagram of a radio frequency system with a cascaded filter circuit according to one embodiment. Figure 3B is a schematic block diagram of a radio frequency system having a cascaded filter circuit according to another embodiment. Figure 3C is a schematic block diagram of a radio frequency system having a cascaded filter circuit according to another embodiment. [Figure 4] Figure 4A is a schematic block diagram of a multiplexer including a cascaded filter and other filters according to one embodiment. Figure 4B is a schematic block diagram of a multiplexer including a cascaded filter and other filters according to another embodiment. [Figure 5] Figure 5A is a schematic block diagram of a cascaded filter and other filters coupled in common mode via a switch according to one embodiment. Figure 5B is a schematic block diagram of a multiplexer including a cascaded filter and other filters coupled in common mode via a switch according to another embodiment. [Figure 6] Figure 6A is a schematic diagram of a cascaded filter according to one embodiment. Figure 6B is a graph of the frequency response of the cascaded filter in Figure 6A. [Figure 7] This is a schematic diagram of a cascade filter according to another embodiment. [Figure 8] This is a schematic diagram of a cascade filter according to another embodiment. [Figure 9] This is a schematic diagram of a cascade filter according to another embodiment. [Figure 10] This is a schematic diagram of a cascade filter according to another embodiment. [Figure 11] Figure 11A is a schematic diagram of a hybrid resonator according to one embodiment. Figure 11B is a graph of the frequency response of the hybrid resonator in Figure 11A. [Figure 12] This is a schematic diagram of a hybrid resonator according to another embodiment. [Figure 13] This is a schematic block diagram of a hybrid parallel bandpass filter according to one embodiment. [Figure 14] This is a schematic block diagram of a diplexer including a hybrid parallel bandpass filter according to one embodiment. [Figure 15] This is a schematic block diagram of a triplexer including a hybrid parallel bandpass filter according to one embodiment. [Figure 16]This is a schematic block diagram of a triplexer including a shared high-pass filter and a hybrid parallel band-pass filter according to one embodiment. [Figure 17] This is a schematic block diagram of a quadplexer including a shared high-pass filter and a hybrid band-pass filter according to one embodiment. [Figure 18] This is a schematic block diagram of a triplexer including a hybrid parallel bandpass filter according to one embodiment. [Figure 19A] Figure 18 shows the simulation results for the triplexer. [Figure 19B] Figure 18 shows a graph of the simulation results for the triplexer, compared to the previous design. [Figure 20] This is a schematic block diagram of a hybrid parallel bandstop filter according to one embodiment. [Figure 21] This is a schematic diagram of a hybrid parallel bandstop filter according to one embodiment. [Figure 22] Figure 21 is a graph of the frequency response of the hybrid parallel bandstop filter. [Figure 23] Figure 23A is a schematic block diagram of a radio frequency system including a hybrid elastic LC filter cascaded to a low-pass filter according to one embodiment. Figure 23B is a schematic block diagram of a radio frequency system including a hybrid elastic LC filter cascaded to a second harmonic notch filter according to one embodiment. [Figure 24] Figure 24A is a schematic diagram of one example of a low-pass filter. Figure 24B is a schematic diagram of another example of a low-pass filter. Figure 24C is a schematic diagram of one example of a second harmonic notch filter. Figure 24D is a schematic diagram of one example of a harmonic notch filter. Figure 24E is a schematic diagram of one example of a second harmonic notch and low-pass filter. [Figure 25]Figure 25A is a schematic block diagram of a triplexer including a hybrid elastic LC filter cascaded to a low-pass filter according to one embodiment. Figure 25B is a schematic block diagram of a triplexer including a hybrid elastic LC filter cascaded to a second harmonic notch filter according to one embodiment. [Figure 26] This is a schematic diagram of a radio frequency module having a transmission path including a filter according to one embodiment. [Figure 27] This is a schematic diagram of a radio frequency module having a receiving path including a filter according to one embodiment. [Figure 28] This is a schematic diagram of a radio frequency module including a filter according to one embodiment. [Figure 29] This is a schematic diagram of a wireless communication device including a filter according to one embodiment. [Figure 30] This is a schematic diagram of a wireless communication device including a filter according to another embodiment. [Modes for carrying out the invention]

[0080] The following detailed description of a given embodiment represents various descriptions of a particular embodiment. However, However, the innovations described herein are defined, for example, by the claims and covers. -It can be embodied in a number of different forms. In this description, the same reference number A drawing that can show the same or functionally similar elements is referenced. The elements shown are not necessarily to scale. Furthermore, it should be understood that the intended implementation The form may include more elements than shown in the drawings, and / or elements shown in the drawings. It may include a subset of the above. Furthermore, some embodiments may include features from two or more drawings. You may incorporate any appropriate combination of meanings. The headings given here are merely for convenience. This does not necessarily affect the scope or meaning of the patent claims.

[0081] This disclosure relates to filters including elastic components and inelastic passive components. A predetermined embodiment is a hybrid elastic LC filter cascaded to an LC filter. Regarding filters, such filters can achieve a relatively wide passband, and further This can satisfy strict out-of-band blocking specifications. Several embodiments can be arranged in parallel with each other. A filter having arranged elastic components and inelastic passive components. Such filters have a relatively wide bandwidth and a stopband that is relatively close to the passband. High blocking performance can be achieved without high loss in the passband. Embodiments disclosed herein include a hybrid passive / elastic filter cascaded with an inelastic L Regarding C filters. Here, an inelastic LC filter is a hybrid passive / elastic filter. They are arranged to suppress the harmonics of the radio frequency signal provided by such a fill. The goal is to achieve relatively high bandwidth and high blocking power while suppressing self-generated harmonics. This is possible. Any suitable combination of the features of the embodiments disclosed herein can be used in relation to each other. They can be combined. In various applications, two or more embodiments can be combined. They can be implemented together.

[0082] Hybrid elastic LC filters cascaded to an LC filter

[0083] With the advancement of fifth-generation (5G) wireless communication technology, inelastic broadband-ultra-high-bandwidth (UHB) The Luta design is encountering difficulties in meeting the new carrier aggregation specifications. New carrier aggregation generally involves many intermodulations that can degrade receiver sensitivity. This brings about a frequency. Therefore, the carrier aggregation specification is a filter. Furthermore, it may have stricter intermodulation distortion (IMD) rejection specifications.

[0084] LC bandpass filters, such as integrated passive device (IPD) bandpass filters, are wide It has advantages such as bandwidth and relatively good wide out-of-band stoppage. However, the LC band Pass filters do not necessarily have particularly sharp blocking properties at frequencies close to the passband. Inelastic passband filters, compared to elastic wave filters, have a passband edge frequency that is different. This can result in significantly worsened roll-off loss. This generally occurs when the stopband is close to the passband. Conversely, this is undesirable when high inhibitory power is desired.

[0085] Elastic resonator filters have a higher quality factor (Q) than LC resonators, resulting in a higher passband. It can provide high stopping power at close frequencies without high edge roll-off loss. Therefore, in order to achieve both a wide bandwidth and sharp stopping power in the stopband close to the passband, Passive inelastic filters can be cascaded to hybrid elastic LC filters. ru.

[0086] A carrier that has relatively sharp blocking properties at frequencies relatively close to the filter's passband. To provide an aggregation IMD rejection compliant filter, a hybrid elastic LC filter It can implement a hybrid elastic LC filter, It may be a broadband filter including one or more inductors and one or more elastic resonators. A hybrid elastic LC filter comprises an elastic resonator, at least an inductor, and at least one It may include a hybrid resonator containing two capacitors.

[0087] By cascading a hybrid elastic LC filter to an LC filter, relative It provides a wide passband with low loss, and furthermore, relative to the passband of cascaded filters. It can provide relatively sharp stopping power at frequencies close to .LC filters are integrated A hybrid elastic LC may include an integrated passive device (IPD) on the passive device die. The filter may include one or more bulk acoustic wave resonators in a cascaded filter. The combination of a bulk elastic wave resonator and LC circuit elements provides a relatively wide passband. Both can also meet relatively strict out-of-band stop specifications.

[0088] Several aspects of this disclosure include cascaded filters for filtering radio frequency signals. Regarding the cascaded filters, the hybrid elastic LC filters and the said Includes a hybrid elastic LC filter and a cascaded inelastic LC filter. A hybrid elastic LC filter consists of multiple elastic resonators, one capacitor, and one inductor. It includes. An inelastic LC filter includes an LC circuit.

[0089] The cascaded filters disclosed herein are used in radio bands as long as elastic resonators can be used. It can be implemented for various frequency bands, including the 50 The filter operates at least 2.5 gigahertz (GHz) in a given application. This may include a passband with a lower frequency limit of at least 3 GHz. Cascaded connection fill In specified applications, the frequency range is approximately 4.5GHz, 6GHz, and 8.5GHz. Alternatively, it may have a relatively high upper limit passband, such as around 10 GHz. The cade connection filter is used for power amplifier modules, diversity receiver modules, or other applications. It can be implemented in other suitable radio frequency front-end modules. The revealed cascade filter has the following design specifications, namely, a relatively low insertion loss ( IL), relatively sharp frequency cutoff, and relatively strong intermodulation frequencies and harmonics. It can satisfy the requirement of suppression.

[0090] Figure 1A shows a hybrid elastic LC filter 12 and an LC filter 14 according to one embodiment. This is a schematic block diagram of the cascaded filter 10, which includes the cascaded filter. The 10 has a first port RF1 and a second port RF2. Hybrid elastic LC film The filter 12 and LC filter 14 are connected to each other between the first port RF1 and the second port RF2. They are arranged in series. The radio frequency signal is transmitted to the first port RF in a given application. It can propagate from port 1 to port 2 RF2. Radio frequency signals can be used in various applications. In this case, it can propagate from the second port RF2 to the first port RF1.

[0091] The hybrid elastic LC circuit 12 includes one or more elastic resonators, one or more inductors, and It includes one or more capacitors. One or more elastic resonators are thin-film bulk elastic wave resonators (F It can be used as a BAW resonator, such as a BAR. For example, a BAW resonator can be used above 2.5 GHz. This can be advantageous for filtering high-frequency signals, such as rotational frequencies. The elastic resonator may, alternatively or additionally, be one or more surface acoustic wave (SAW) resonators, one or more A boundary elastic wave resonator, and / or any other suitable elastic wave resonator such as one or more Lamb wave resonators. It may include a wave resonator. The hybrid elastic LC filter 12 has an elastic resonator outside the die. The section may include capacitors and inductors. The hybrid elastic 12 is a ladder fill It may be used as a base. The hybrid elastic filter 12 provides a fixed structure in a given application. It can be used as a fixed filter. A fixed filter is a tunable filter in some examples. It can be implemented with less complexity than the original. Hybrid elastic LC filter 12 may be tunable in some applications. If the elastic LC filter 12 is tunable, the notch and / or stopband can be tuned. It can be made punctured.

[0092] The LC circuit 14 includes one or more inductors and one or more capacitors. 14 is one or more integrated passive devices (IPDs) mounted on a package substrate, one or more The above surface mount components, one or more passive devices, or any suitable combination thereof This may include combinations. Surface mount components at some frequencies are package-based It may have a higher quality factor and lower insertion loss than IPDs and passive devices mounted on a board. One or more capacitors may be used as explicit capacitors and / or parasitic capacitors. The LC circuit 14 can also implement impedance matching.

[0093] Figure 1B shows a cascading signal path between a power amplifier 16 and an antenna 17 according to one embodiment. This is a schematic block diagram of a radio frequency (RF) system 15 including a code connection filter 10. Figure 1B shows that the cascade filter 10 may be included in the transmit signal path. In a typical application, the first port RF1 of the cascade filter 10 is powered It can be electrically coupled to the output of the power amplifier 16. The second port RF2 can be electrically coupled to antenna 17. In the application, the first port RF1 of the cascade connection filter 10 is connected to antenna 17 It can be electrically coupled to. The second port RF2 of the cascade filter 10 is It can be electrically coupled to the output of the power amplifier 16.

[0094] Figure 1C shows the signal path between the antenna 17 and the low-noise amplifier 19 according to one embodiment. Figure 1C is a schematic block diagram of the RF system 18 including the cade connection filter 10. This indicates that the cascade filter 10 may be included in the received signal path. In this configuration, the first port RF1 of the cascade filter 10 is a low-noise amplifier. It can be electrically coupled to the input of the widening unit 19. The second of the cascade filter 10 Port RF2 can be electrically coupled to antenna 17. Several applications In this configuration, the first port RF1 of the cascade filter 10 is powered to the antenna 17. It can be coupled electrically. The second port RF2 of the cascade connection filter 10 has low noise. It can be electrically coupled to the input section of the sound amplifier 19.

[0095] Figure 2A shows the connection of LC filters 14A and 14N via a switch 22 according to one embodiment. Model of a cascaded filter circuit 20 including a combined hybrid elastic LC filter 12 This is a formulaic block diagram. The cascade filter circuit 20 consists of multiple LC circuits 14A~ The hybrid elastic LC filter 12 can be shared between 14N. Switch 22 is To implement a cascaded filter, a hybrid elastic LC filter 12 was selected. It is electrically connected in series with the LC circuit. The switch 22 in the figure is a multi-throw radio frequency switch. Switch 22 switches the hybrid elastic LC filter 12 to the selected LC filter. It can be electrically coupled to the switch. Switch 22 has any appropriate number of throws and can be coupled to the switch. The cade-connected filter circuit 20 has a corresponding number of LC filters 14A to 14N. The LC filters 14A and 14N shown are, respectively, part of the cascaded filter circuit 20. Corresponding port RF 21 and RF 2N They are coupled together. Cascade connection filter cycle In path 20, the hybrid elastic LC filter 12 is connected to LC filters 14A to 14N. In combination with one or more of our selected components, at frequencies relatively close to the passband, To implement sharp blocking performance in contrast. In a given application, hybrid elastic LC Filter 12 is electrically coupled to a selection of LC filters 14A to 14N. In order to tune the blocking at frequencies relatively close to one or more passbands It may be possible to tune it.

[0096] Figure 2B shows a hybrid elastic LC filter 12 via a switch 22 according to one embodiment. A model of a cascaded filter circuit 25 including an LC filter 14 coupled to A and 12N. This is a formulaic block diagram. The cascaded filter circuit 20 consists of multiple hybrid elastic The LC filter 14 can be shared between LC circuits 12A to 12N. Switch 22 is To implement a cascaded filter, an LC filter 14 was selected as a hybrid It can be electrically connected in series with an elastic LC circuit. The switch 22 shown in the figure is a multi-throw radio frequency This is a wavenumber switch. Switch 22 controls the LC filter 14, and the selected hybrid bullet. It can be electrically coupled to a polar LC filter. Switch 22 can handle any number of appropriate pulses. The cascaded filter circuit 25 has a corresponding number of hybrid elastic LC filters. It has 12A to 12N. The illustrated hybrid elastic LC filters 12A and 142 are Each corresponds to the RF port of the cascaded filter circuit 25. 11 and RF 1N So They are combined.

[0097] Figure 3A shows a radio frequency system 30A of a cascaded filter circuit according to one embodiment. This is a schematic block diagram. The radio frequency system 30 is a cascade connection circuit as shown in Figure 2A. This is an example system that can implement 20. As shown in the diagram, antenna 32 is high Coupled to the hybrid elastic LC filter 12, switch 22 is a transmit / receive switch. LC filters 14A and 14B are connected to the power amplifier 34 and the low-noise amplifier 36, respectively. The cascade connection circuit 25 in Figure 2B is a radio frequency similar to that of the radio frequency system 30A. It can be implemented in wavenumber systems.

[0098] Figure 3B shows a radio frequency system having a cascaded filter circuit according to another embodiment. This is a schematic block diagram of 30B. Figure 3B shows that LC circuits 14A and 14B are used for power amplification. This indicates that devices 34A and 34B can exist in different transmission paths. The hybrid elastic LC filter 12 is (a) between the power amplifier 34A and the antenna 32. (b) A cascaded filter circuit with an LC filter 14A in between, and a power amplifier 34 A cascade filter circuit having an LC filter 14B is connected between B and antenna 32. It may be included.

[0099] Figure 3C shows a radio frequency system having a cascaded filter circuit according to another embodiment. This is a schematic block diagram of the 30C. Cascade connection filter of the 30C radio frequency system. This can be implemented, for example, in diversity receiving applications. Figure 3C shows , LC circuits 14A and 14B have different low-noise amplifiers 36A and 36B respectively This indicates that it may be present in the receiving path. Therefore, the hybrid elastic LC filter 12 is (a) A cascade having an LC filter 14A between the low-noise amplifier 36A and the antenna 32 (b) A connected filter circuit and an LC filter between the low-noise amplifier 36B and the antenna 32. It may be included in a cascaded filter circuit having 14B.

[0100] Figure 4A shows a cascaded filter and a multiplier including other filters according to one embodiment. This is a schematic block diagram of the Lexa 40. The multiplexer 40 is connected to a common node. It includes multiple filters. As shown in the figure, an LC filter 14 and a hybrid elastic LC filter The cascaded filters, including filter 12, and the other filters 42 are all connected to a common node. It is coupled to the multiplexer 40, where the LC filter 14 is a hybrid elastic L It is connected to the common node via the C filter 12. The multiplexer 40 is duplex It can be used as a filter. A triplexer with two filters and three filters, and four filters. It may be a taquadplexer, etc. The other filter 42 includes any appropriate number of filters. That's fine. The other filters 42 are one or more LC filters (e.g., IPD filters), one One or more acoustic wave filters, one or more hybrid LC filters, etc., or any of these It may include appropriate combinations.

[0101] Figure 4B shows a cascaded filter and a multiplier including other filters according to another embodiment. This is a schematic block diagram of the Lexa 45. The multiplexer 45 is shown in Figure 4A. Similar to the SA40, but the hybrid elastic LC filter 12 passes through the LC filter 14. The difference is that they are joined to a common node.

[0102] Multiple filters communicate with a common node, such as an antenna node, via a switch. Figure 5A shows a cascaded connection filter connected to a common node via switch 52. This is a schematic diagram of a radio frequency system 50 including a cascade filter and other filters 42. The do-connection filter, other filters 42, and switch 52 implement switchplexing. Yes, it is possible. Switchplexing can implement on-demand multiplexing.

[0103] Figure 5B shows a cascaded connection coupled in common mode via a switch according to another embodiment. This is a schematic block diagram of a radio frequency system 55 including filters and other filters. The radio frequency system 55 is similar to the radio frequency system 50 in Figure 5A, but is hybrid The difference lies in the fact that the ed elastic LC filter 12 and the LC filter 14 are arranged in a different order. ru.

[0104] Figure 6A is a schematic diagram of a cascade filter 60 according to one embodiment. The code connection filter 60 connects to the band 42 signal and / or the band 43 signal and / or the band 4 Arranged to allow radio frequency signals with frequencies above 3GHz, such as 8 signals, to pass through. It can be used as a band-pass filter. In such applications, filter 60 The elastic wave resonator can be a BAW resonator. Filter 60 is a fifth-generation (5G) wireless system. It can be used in system applications. 5G technology is 5G New Radio It may also be called (NR). The cascade filter 60 is cascaded to the LC filter 64. Includes a connected hybrid elastic LC filter 62. 62 is an example of a hybrid elastic LC filter 12. LC filter 64 is an LC filter This is an example of filter 14.

[0105] The hybrid elastic LC filter 62 consists of elastic resonators A61 and A62, and inductor L6 01, L602, L603, L604, L605 and L605, and capacitor C60 1. Includes C602, C603 and C604. Elastic resonators A61 and A62 are FBAR A BAW resonator like the one shown may be used. In some examples, elastic resonators A61 and A62 These include SAW resonators, temperature-compensated SAW (TCSAW) resonators, boundary acoustic wave resonators, and Lamb wave resonators. This may include a vibrator, or any suitable combination thereof. Inductors L601, L60 2. L603, L604, L605 and L605, and capacitors C601, C602 C603 and C604 are LC / inelastic components. Hybrid elastic LC The LC / inelastic component of filter 62 is a die containing elastic resonators A61 and A62. It can be implemented externally. Hybrid elastic LC filter 62 LC / inelastic The component includes one or more surface mount technology (SMT) inductors and / or capacitors. It is possible. In some examples, the LC / inelastic components of the hybrid elastic LC filter 62 The component consists of one or more IPDs on the package substrate and / or one or more induction trays. It may include S.

[0106] As shown in the figure, the hybrid elastic LC filter 62 is in parallel with the elastic resonator A62 The hybrid resonator structure includes an inductor L602. Here, inductor L60 3 is connected in series with the inductor and elastic resonator A62. This hybrid resonator structure is related to Details are given with reference to Figures 11A and 11B. The illustrated LC filter 62 also Elastic resonators A61 and A62 are inductors L603 and L606 in the shunt circuit. Each elastic node, arranged in series, includes an LC tank between it. Here, the LC tank is This includes capacitor C604 and inductor L605. Regarding this hybrid resonator structure... Further details are given with reference to Figure 12.

[0107] The LC filter 64 may be a band-pass filter. For example, the LC filter 64 is a band-pass filter. It can be used as a band-pass filter for band 42 / band 43. The LC filter 64 is on the IPD die. The IPD section 65, the package substrate section 66 including traces on the package substrate, and SMT It includes an SMT section 67 containing components. The IPD section 65 includes an IPD capacitor C60 5, C606, C607, C608, C609 and C610, and IPD inductor L Includes 608. The package substrate portion 66 includes inductors L609, L610, L611 and It includes an inductive trace arranged as L612. SMT section 67 is SMT capacitor C61 Includes 1 and C612.

[0108] As shown in the figure, the LC filter 64 consists of a bridge capacitor, an LC resonant circuit, and a coupling capacitor. Includes a lower and a series LC tank. The first bridge capacitor C610 is connected to the series LC tank. It has a first end that is coupled and a second end that is coupled to the input node of the LC filter 64. The row LC tank includes capacitor C605 and inductor L608. First bridge The Pacita C610 is connected in parallel to the three coupled capacitors C606, C607, and C608. .

[0109] The first LC resonant circuit is an LC shunt resonant circuit. As shown in the figure, the first LC resonant circuit is A shunt connected in parallel to a series LC circuit including inductor L612 and capacitor C612 Includes inductor L611. The second bridge capacitor C609 is coupled to the series LC tank. It has a first end that is connected to the first LC resonant circuit and a second end that is connected to the first LC resonant circuit. C609 is connected in parallel to the two coupled capacitors C606 and C607. The resonant circuit is an LC shunt resonant circuit. As shown in the figure, the second LC resonant circuit is an inductor A shunt inductor L is connected in parallel to a series LC circuit including L610 and capacitor C611. Includes 609.

[0110] The first coupling capacitor C608 is connected to the input of the filter, and the first coupling capacitor C608 is connected to the input of the filter. The node is coupled between the first LC resonant circuit and the second coupling capacitor C607. The second coupling capacitor C607 is coupled with the first coupling capacitor C608 and the third coupling capacitor. It is coupled in series with C606. The second coupled capacitor C607 is also the first LC resonance It is coupled between the circuit and the second LC resonant circuit. The third coupling capacitor C606 is coupled in series with the LC The tank and the third coupling capacitor C606 form the second LC resonant circuit and the second coupling capacitor C6 It is connected between the node that is connected to 07. The series LC tank shown in the figure is a parallel LC circuit. ru.

[0111] Figure 6B is a graph of the frequency response of the cascaded filter 60 shown in Figure 6A. The curve represents the frequency response of the cascaded filter 60 in Figure 6A. The stepped line represents the design specifications. This represents a filter mask or pattern. The curve in Figure 6B represents the cascaded filter in Figure 6A. This shows that the frequency response of 60 meets the design specifications except for 9 GHz. As shown in the figure, The filter response has two nulls introduced by the shunt elastic resonators A61 and A62. The frequency response has a relatively sharp roll-off at both edges of the passband. (Figure 6A) The inelastic LC filter 64 can provide a relatively large bandwidth. The frequency response is , the relatively wide bandwidth from around 3.1 GHz to 4.2 GHz in the illustrated frequency response It has. Therefore, the cascaded filter 60 in Figure 6A has at least 1 GHz band It may have a bandwidth. In some other embodiments, it is cascaded to an inelastic LC filter. The cascaded filter with a hybrid elastic LC filter is approximately 3.3 GHz. Elastic resonance such as a bandwidth of z ~ 4.2 GHz, or a bandwidth of approximately 4.4 GHz ~ 5 GHz. It may have a bandwidth that is significantly wider than that determined by the instrument coupling coefficient.

[0112] The cascaded filter 60 in Figure 6A is a hybrid elastic LC filter cascaded This is an example of a connected inelastic LC filter. The principles and advantages described here are applicable to various applications. It can be implemented in other filter topologies. Some examples of filter topologies are These are shown in Figures 7-10. These filters can be used, for example, in 5G applications. These filters can be made using elastic resonators like FBARs, inductors, and capacitors. Includes passiters. Inductors and capacitors are one or more IPDs, one or more surface mounts. Inductor, one or more surface-mount capacitors, one or more induction trays on the package substrate This may include filters such as S, or any suitable combination thereof. Examples of filters in Figures 7-10 are: This document presents filters for various applications and design specifications. It also describes the characteristics of these filters. Any suitable combination of these can be used together with each other and / or any other original combination described herein. It can be implemented according to its principles and advantages.

[0113] Figure 7 is a schematic diagram of a cascaded filter 70 according to another embodiment. The connected filter 70 is a hybrid elastic LC filter cascaded to the LC filter 74. Includes filter 72. The hybrid elastic LC filter 72 is a hybrid elastic LC filter This is an example of LC filter 12. LC filter 74 is an example of LC filter 14. Cascade The cascaded connection filter 70 may, for example, be a receiving filter. In a given application, it has a passband from 3.4GHz to 3.7GHz. obtain.

[0114] The hybrid elastic LC filter 72 uses elastic resonators A71, A72, A73, A74, A75 and A76, capacitors C701, C702 and C703, and inductor L7 01, L702, L703, L704, L705, L706, L707, L708 and L Includes 709. Elastic resonators A71~A76 may be BAW resonators. Capacitor C70 1~C703 can be SMT capacitors. Inductors L701~L709 are SMT This may include a combination of an inductor and conductive traces on the package substrate.

[0115] The illustrated LC filter 74 consists of capacitors C704 and C705, and inductor L7 Includes 10 and L711. In a given embodiment, the LC filter 74 is on the IPD die. It can be implemented with IPD capacitors and inductors. Several other implementations In this state, the LC filter 74 is provided by the SMT capacitor and inductor on the IPD die. It can be implemented in this way.

[0116] Figure 8 is a schematic diagram of a cascaded filter 80 according to another embodiment. The connected filter 80 is a hybrid elastic LC filter cascaded to the LC filter 84. Includes filter 82. The hybrid elastic LC filter 82 is a hybrid elastic LC filter This is an example of LC filter 12. LC filter 84 is an example of LC filter 14. One implementation. In this configuration, the cascade filter 80 allows for the passage of signals from approximately 3.3 GHz to 4.2 GHz. It may be a band-pass filter with a bandwidth. According to another embodiment, a cascaded filter The filter may have a passband from 3.4GHz to 3.7GHz. Cascaded filter 8 0 can be used, for example, as a receiving filter.

[0117] The hybrid elastic LC filter 82 includes elastic resonators A81, A82, A83, A84 and A85, capacitors C801 and C802, and inductors L801, L802, L 803, L804, L805 and L806. The elastic resonators A81 - A85 may be BAW co - resonators. The capacitors C801 and C802 may be SMT capacitors. The in ductors L801 - L805 may include a combination of an SMT inductor and a conductive trace on a package substrate. The hybrid resonator including inductors L802 and L803 and elastic resonators A81, A82 and A83 can function similarly to the hybrid resonator described with reference to FIGS. 11A and 11B. The hybrid ladder structure including inductors L802 - L805, capacitor C802, and elastic resonators A81 - A85 can function similarly to the hybrid ladder structure described with reference to FIG. 12. The hybrid resonator including inductors L802 and L803 and elastic resonators A81, A82 and A83 can function similarly to the hybrid resonator described with reference to FIGS. 11A and 11B. The hybrid ladder structure including inductors L802 - L805, capacitor C802, and elastic resonators A81 - A85 can function similarly to the hybrid ladder structure described with reference to FIG. 12. The hybrid ladder structure including inductors L802 - L805, capacitor C802, and elastic resonators A81 - A85 can function similarly to the hybrid ladder structure described with reference to FIG. 12. The illustrated LC filter 84 includes capacitors C803, C804, C805, C806 and

[0118] C807, and inductors L806, L807, L808 and L809. The LC filter 84 may include one or more IPDs, one or more SMT components, one or more conductive traces on a substrate, or any suitable combination thereof. C807, and inductors L806, L807, L808 and L809. The LC filter 84 may include one or more IPDs, one or more SMT components, one or more conductive traces on a substrate, or any suitable combination thereof. The LC filter 84 may include one or more IPDs, one or more SMT components, one or more conductive traces on a substrate, or any suitable combination thereof. The LC filter 84 may include one or more IPDs, one or more SMT components, one or more conductive traces on a substrate, or any suitable combination thereof.

[0119] FIG. 9 is a schematic diagram of a cascade - connected filter 90 according to another embodiment. The cascade - connected filter 90 includes a hybrid elastic LC filter 92 cascade - connected to an LC filter 94. The hybrid elastic LC filter 92 is a hybrid elastic LC filter The cascade - connected filter 90 includes a hybrid elastic LC filter 92 cascade - connected to an LC filter 94. The hybrid elastic LC filter 92 is a hybrid elastic LC filter filter 92 includes elastic resonators A81, A82, A83, A84 and This is an example of filter 12. LC filter 94 is an example of LC filter 14. In the configuration, the cascade filter 90 is coupled between the elastic resonator and ground. This may include surface-mount passive components, excluding shunt inductors. The shunt inductor can be a printed trace on the package substrate. Therefore, in such an embodiment, the cascade connection filter 90 is an integrated passive device It does not include the IPD. The cascade connection filter 90 has an antenna on a predetermined side. It can be a receiving filter coupled between a switch and a low-noise amplifier. The cascaded connection filter 90 can improve insertion loss compared to the previous design. The connection filter 90 may, for example, be a receiving filter.

[0120] The hybrid elastic LC filter 92 has elastic resonators A91, A92 and A93, and a capacitor Substrates C901, C902, C903 and C904, and inductors L901 and L902 This includes L903 and L904. Elastic resonators A91 to A93 may be BAW resonators. Capacitors C901~C904 can be SMT capacitors. Inductors L901~L 904 may include a combination of an SMT inductor and conductive traces on the package substrate. ru.

[0121] The illustrated LC filter 94 includes capacitors C903, C904 and C905, and an inductor Includes L905, L906, L907, and L908. LC filter 94 has one or more components. IPD, one or more SMT components, one or more conductive traces on the substrate, or This may include any suitable combination of these. In one embodiment, the LC filter 94 is It consists of an SMT inductor and a capacitor.

[0122] Figure 10 is a schematic diagram of a cascade filter according to another embodiment. The connecting filter 100 is a hybrid elastic L filter cascaded to the LC filter 104. Includes C filter 102. Hybrid elastic LC filter 102 is a hybrid elastic L This is an example of a C filter 12. LC filter 104 is an example of an LC filter 14. In a predetermined embodiment, the cascade connection filter 100 includes an IPD, a surface mount passive capacitor. This may include components, guide traces on the laminate, and FBAR. Cascade connection fill The TA 100 is coupled between the antenna switch and the low-noise amplifier on a predetermined side. It can be used as a receiving filter. The cascade filter 100 is approximately 3.3 GHz. It can be used as a band-pass filter with a passband of 4.2 GHz. Cascaded filter In a given embodiment, TA100 is a receiving filter.

[0123] The hybrid elastic LC filter 102 uses elastic resonators A101, A102, and A103 , capacitors C1001 and C1002, and inductors L1001, L1002, L Includes 1003, L1004, L1005 and L1006. Elastic resonators A91~A93 are It can be used as a BAW resonator. Capacitors C1001 and C1002 are SMT capacitors and It may include a and / or IPD capacitor. There is one or more inductors L1001~L1006. SMT inductor, one or more IPD inductors, one or more conductive on the package substrate This may include sexual traces, or any suitable combination thereof. In one embodiment, The inductors L1001 to L1006 include at least an SMT inductor, at least one IPD inductor, and at least one conductive trace on the package substrate.

[0124] The hybrid resonator including inductors L1002 and L1003 and the elastic resonator A102 can function in the same manner as the hybrid resonator described with reference to FIGS. 11A and 11B. The hybrid resonator including inductors L1005 and L1006 and the elastic resonator A103 can function in the same manner as the hybrid resonator described with reference to FIGS. 11A and 11B. The hybrid ladder structure including inductors L802 to L806, capacitor C1002, and elastic resonators A102 to A103 can function in the same manner as the hybrid ladder structure described with reference to FIG. 12.

[0125] The illustrated LC filter 104 includes capacitors C1003, C1004, C1005, C1 006 and C1007, and inductors L1007, L1008, L1009 and L101 0. The LC filter 104 can include one or more IPDs, one or more SMT components , one or more conductive traces on the substrate, or any suitable combination thereof. In one embodiment, the LC filter 104 includes at least an SMT component, at least one IPD, and at least one conductive trace on the package substrate.

[0126] The hybrid elastic LC filter described herein can include various hybrid resonators including elastic wave resonators and non-elastic passive components. Multiple examples of hybrid resonators are included. ​​These will be explained with reference to Figures 11A-12. These hybrid resonators are described here. It can be implemented in relation to any suitable embodiment.

[0127] Figure 11A is a schematic diagram of a hybrid resonator 110 according to one embodiment. The lid resonator 110 includes an elastic resonator 112, a first inductor 114 and a second inductor 1 Includes 16. The elastic resonator 112 is arranged as a shunt resonator. Elastic resonator 112 For example, it may be an FBAR. The elastic resonator 112 may be any other suitable elastic resonator. It is acceptable. The elastic resonator 112 is connected in parallel with the first inductor 114. The elastic resonator 112 is , connected in series with the second inductor 116. Inductors 114 and 116 and elastic resonator 112 This combination provides a pair of knots that are relatively close to the passband without significant impact on transmission loss. This can result in a notch. The notch is located from approximately 1.1GHz to 8.5GHz, above the lower or upper limit of the passband. It can be in the Hz range.

[0128] Figure 11B is a graph of the frequency response of the hybrid resonator 110 shown in Figure 11A. The number response shows a pair of notches as described with reference to Figure 11A. The frequency response also shows smear The modified hybrid resonator 110 does not introduce significant transmission loss. vinegar.

[0129] Figure 12 is a schematic diagram of a hybrid resonator 120 according to another embodiment. The ladder resonator 120 is a hybrid ladder structure. The hybrid resonator 120 is a first Includes a series shunt circuit, an LC tank, and a second series shunt circuit. First series shunt circuit This includes a first elastic resonator 122 and a first inductor 123. The second series shunt circuit is The LC tank includes a second elastic resonator 124 and a second inductor 125. It includes a capacitor 126 connected in parallel with 127. The hybrid resonator 120 has an elastic node. It includes an LC tank in between. This is for impedance matching between resonators and hybrid resonators. This can provide both a far-end notch and a notch in the frequency response of the filter including 20. The hybrid resonator 120 includes a hybrid ladder structure. For example, it can be used for low-pass and / or high-pass filters. The hybrid resonator 120 is a hybrid ladder topology.

[0130] Parallel Hybrid Elastic Passive Filter

[0131] With the advancement of 5G wireless communication technology, new carrier aggregation (CA) specifications are being developed. Strict intermodulation distortion (IMD) rejection for filters can be identified. Such new CA This may include more multiplexing filters than conventional CA. CA IMD Removal To give the compliant filter sharp blocking at frequencies near the passband, elastic support filters are used. The Ruta provides relatively low loss and a wide passband, and relatively low loss at frequencies near the passband. By using a hybrid resonator such as a hybrid elastic LC resonator that has sharp stopping power It can be designed. Elastic resonators generate harmonics when relatively high power is applied. Obtained. Harmonics generated by surface acoustic wave devices or bulk acoustic wave devices are high frequency. It may leak into the wavenumber band and / or emit radiation exceeding standard specifications.

[0132] Giving CA-compliant multiplexing filters sharp blocking at edge bandwidth frequencies. To that end, a hybrid elastic LC wide filter is incorporated into part or all of the passband arm. This allows for the reduction and / or minimization of the use of filter elastic dies and passive components. To that end, hybrid elastic LC filters, integrated passive device (IPD) filters, or Either a dynamic low-pass (LP) or high-pass (HP) filter is used in two or more passbands. It can be shared by a region arm. In addition, a band-pass filter (BPF) (for example) To give a specific sharp blocking effect to the high-bandwidth arm (at 2.4GHz in Wi-Fi) , parallel hybrid elastic LC filters can be included. In some examples, parallel Column hybrid elastic LC filters can cascade with other filters such as passive inelastic filters. It can be connected via a code.

[0133] A hybrid elastic LC filter having parallel hybrid elastic LC subfilters is disclosed. In one embodiment, a parallel elastic LC filter filters radio frequency signals. A first subfilter configured to perform a certain action, and a second subfilter coupled in parallel to the first subfilter. The first subfilter includes a first elastic resonator and a first LC component. The second subfilter includes a second elastic resonator and a second LC component. A hybrid elastic LC filter includes multiple filters coupled together at a common node. It can be implemented in a multiplexer. A parallel hybrid elastic filter is disclosed herein. Any suitable principle and advantages of the elastic LC circuit can be implemented. As one example... The parallel hybrid elastic LC filter includes the hybrid resonator 110 shown in Figure 11A. As another example, a parallel hybrid elastic LC filter is obtained as shown in Figure 12. It may include a Dorada structure 120.

[0134] A parallel hybrid elastic LC filter can be used as a bandpass filter. Elastic LC filters can be used as band-stop filters. Parallel hybrid elastic LC filters are They may be present in high-bandwidth paths. Such filters reduce and / or minimize design complexity. It can be transformed. In addition, such filters can be used in a given application. , with only a few passive components and / or in a small physical area, It is possible. The parallel hybrid passive filter described here can be used at a specific frequency (for example) Design specifications for high-bandwidth paths, such as desirable blocking properties in the Wi-Fi frequency band. This can satisfy the requirements. This allows the transmission path and reception path to simultaneously share a high-bandwidth path. It is possible.

[0135] Parallel hybrid elastic LC filters offer a relatively wide bandwidth and are suitable for specific frequency bands. It can provide strong blocking properties. Parallel hybrid elastic LC filters can provide strong blocking properties to each other. Different frequency bands arranged in parallel to provide strong blocking for other frequency bands It may include a hybrid filter. As one example, a hybrid filter for parallel bands 40 and 41. The hybrid elastic LC bandpass filter allows signals in bands 40 and 41 to pass through. It provides a wide bandwidth while strongly blocking the 2.4GHz Wi-Fi frequency band. This is possible. In some embodiments, the passive inelastic filter is used in high-bandwidth paths. To achieve both wide bandwidth and sharp stopping power, a parallel hybrid elastic LC filter was used. It can be scade-connected. According to a predetermined embodiment, parallel hybrid elastic LC A triplexer is achieved by a filter and two other filters coupled to a common node. It is possible to do so for example, for low bandwidth (LB) / midband (MB) / high bandwidth (HB). The triplexer includes a hive containing a band 40 filter in parallel with a band 41 filter. LB filters, MB filters, and HB filters implemented by lid elastic LC filters It may include a triplexer. Such a triplexer effectively provides a system-level carrier aggregate. It can serve as a quadplexer that is advantageous for regating applications. ru.

[0136] Figure 13 shows a schematic block of a hybrid parallel bandpass filter 130 according to one embodiment. This is a diagram. The parallel hybrid bandpass filter 130 consists of two parallel elements arranged in parallel with each other. Includes a first band-pass filter 132 and a second band-pass filter 134. The 132 and the second bandpass filter 134 are used to filter radio frequency signals. They are arranged. The first bandpass filter 132 has a first elastic resonator and a first inelastic passive component. It is a hybrid elastic passive filter that includes a first inelastic passive component. , may include at least an inductor and a capacitor. The second bandpass filter 134 is the A hybrid elastic passive filter including two elastic resonators and a second inelastic passive component This is permitted. The second inelastic passive component includes at least an inductor and a capacitor. It is possible. The first band-pass filter 132 has a first passband, and the second band-pass filter 13 4 has a second passband. By including two filters in parallel with each other, parallel filters The bandwidth of the filter is increased compared to each of the individual filters included in the parallel filter. It can be done. The hybrid parallel bandpass filter 130 has a first passband and a second passband. It has a bandwidth including the passband. Frequency response of the hybrid parallel bandpass filter 130 The device may have a notch in the passband between the first passband and the second passband. The notch is, for example, For example, it may exist for the 2.4GHz Wi-Fi band. Parallel hybrid bandpass Symbol 135 for Ruta 130 is also shown in Figure 13.

[0137] Multiple embodiments refer to parallel hybrid elastic LC filters for high-bandwidth filters. Despite being explained, none of the appropriate principles and benefits described here are intermediate. Bandwidth filters, lowbandwidth filters, or any other features that may be beneficial from the characteristics described herein It can be applied to other filters of your choice.

[0138] The parallel hybrid elastic LC filter described here is used in power amplifier modules, die Varsity receiving module, or any other suitable radio frequency front-end module It can be implemented in [location / platform].

[0139] The parallel hybrid elastic passive filters described here are coupled together at a common node. It can be implemented in a multiplexer that includes multiple filters. The term "Kusa" may include diplexa, triplexa, quadplexa, etc. Multiplex In this configuration, any number of filters can be joined together to a common node. Multiple filters are used to implement switchplexing functionality using multi-throw radio frequency switches. They can be joined together to a common node via a parallel hybrid elastic passive filter. Several examples of multiplexers are described with reference to Figures 14-16. An example of a multiplexer including a column hybrid elastic filter 130 is a parallel hybrid elastic Filter 130 can be implemented according to any suitable principle and advantages.

[0140] Figure 14 shows a hybrid parallel bandpass filter 130 including one embodiment. This is a schematic block diagram of the KUSA 140. The diplexer 140 is a hybrid parallel bandwidth. Includes a pass filter 130 and a second filter 144. As shown in the figure, parallel hybrid projectile The first filter 130 is a high-bandwidth filter, and the second filter 144 is an intermediate-bandwidth filter. This may be done. The parallel hybrid elastic filter 130 and the second filter 144 are shown in the figure. It can be connected together to a common node such as an antenna node ANT. The Ta144 is a hybrid elastic passive filter, an inelastic LC filter, or an acoustic wave filter. It is permissible. The second filter 144 may be a band-stop filter. The bandwidth is the first passband of the first band-pass filter 132, and / or the second band-pass filter This may include part or all of the second passband of 134.

[0141] Figure 15 shows a tripod including a hybrid parallel bandpass filter 130 according to one embodiment. This is a schematic block diagram of the Lexa 150. The Triplexa 150 is a hybrid parallel It includes a band-pass filter 130, a second filter 154, and a third filter 156. The parallel hybrid elastic filter 130 is suitable as a high-bandwidth filter, and the second filter Filter 154 works well as an intermediate-band filter, and the third filter 156 works well as a low-band filter. The parallel hybrid elastic filter 130 and the second filter 156 are shown in the antenna It can be joined together to a common node such as node ANT. The second filter 154 is It can be used as a high-pass and band-blocking filter. The bandwidth is the first passband of the first band-pass filter 132, and / or the second band-pass filter The second passband of 134 may include part or all of it. The second filter 154 is a hybrid It may be an elastic LC filter, an inelastic LC filter, or an elastic wave filter. Third filter 156 can be used as a low-pass filter. The third filter 156 is a hybrid elastic LC filter. The filter may be an inelastic LC filter or an elastic wave filter. The third filter 156 is the The passbands of the two filters 154 and the hybrid parallel bandpass filter 130 are as follows: It can pass through rotating frequencies.

[0142] Figure 16 shows a shared high-pass filter 162 and a hybrid parallel bandwidth filter according to one embodiment. This is a schematic block diagram of a triplexer 160 including an overfilter 130. The Kusa 160 is similar to the triplexer 150 in Figure 15, but has a shared high-pass filter 1 62 is used in both the hybrid parallel bandpass filter 130 and the second filter 144. The differences are that it is cade-connected and the second filter 144 is a band-stop filter. Therefore, the shared high-pass filter 162 is used in conjunction with the parallel hybrid elastic filter 130. It is coupled between the passing node. The shared high-pass filter 162 is also the second filter 144 It is coupled between and the common node. The shared high-pass filter 162 is, for example, an LC filter. Alternatively, it may be a hybrid elastic LC filter. In one embodiment, a shared high-pass filter The filter 162 may be an inelastic passive filter. Such a shared high-pass filter 162 Together with the parallel hybrid elastic filter 130, it provides a relatively wide bandwidth and high It is possible to achieve relatively sharp stoppage relative to the bandwidth path.

[0143] Figure 17 shows a shared high-pass filter 162 and a hybrid bandpass filter according to one embodiment. This is a schematic block diagram of the Quadplexer 170, including the filter. Quadplexer 1 70 is similar to the triplexer 160 in Figure 16, but the first bandpass filter 132 and The difference is that separate terminals are provided for each of the second bandpass filters 134. This allows for greater flexibility in terms of carrier aggregation options. In the quadplexer 170, the first bandpass filter 132 and the second bandpass filter The Ruta 134 receives signals within different frequency bands and filters each signal. It is possible.

[0144] Figure 17 shows an example of a multiplexer including a hybrid elastic passive filter. (Band 1) The band-pass filter 132 and the second band-pass filter 134 have different passbands, and both Tomo passes through the shared high-pass filter 162 to the common node (antenna node AN in Figure 17). The first band-pass filter 132 and / or the second band-pass filter 134 are coupled to T). This may include elastic resonators and inelastic passive components. The inelastic passive components are This may include an inductor and capacitor located outside the die, including the elastic wave resonator. The dynamic component is an inductor connected in parallel to one of the multiple elastic resonators. This may include the first band-pass filter 132 and / or the second band-pass filter 134. This may include any suitable combination of the features of the hybrid elastic passive filter disclosed herein. In a predetermined embodiment, the first bandpass filter 132 and the second bandpass filter 1 Each of the 34s is like a passband in the frequency range of 2 gigahertz to 3 gigahertz, It has a passband within the frequency range of 2 gigahertz to 5 gigahertz.

[0145] The band-stop filter 144 is coupled to the common node via the shared high-pass filter 162. The band-stop filter 144 is configured to block the first band-pass filter 132 and the second band-pass filter. The passband of filter 134 is included, along with a stopband. The low-pass filter 156 is connected to a common node. They are combined.

[0146] According to the quadplexer 170, compared to the triplexer 160 in Figure 16, a predetermined capacity Rear aggregation performance can be improved. For example, a quadplexer is included. Linear communication devices include carriers including the first and second carriers at a common node. It can support aggregation. In this example, the first carrier is in the first band. It exists within the passband of the second band-pass filter 132 and outside the passband of the second band-pass filter 134. The second carrier then uses the first band-pass filter 132 and the second band-pass filter 134. It exists outside both of their respective passbands. The first carrier is passed through the second band-pass filter 134. Therefore, by not filtering, the insertion loss in the Quadplexer 170 is inferior. The amount of chemicals produced may be less compared to the Triplexa 160.

[0147] Figure 18 shows a tripod including a hybrid parallel bandpass filter 182 according to one embodiment. This is a schematic diagram of the Lexa 180. In Figure 18, a hybrid parallel bandpass filter is shown. An example of a multiplexer having is shown. As shown in the figure, the triplexer 180 is Hybrid parallel bandpass filter 182, hybrid elastic LC filter 184, inelastic Includes an LC filter 186 and a harmonic notch filter 188.

[0148] The hybrid parallel bandpass filter 182 is a hybrid parallel bandpass filter 13 This is an example of 0. The hybrid parallel bandpass filter 182 is connected to the triplexer 180. This is a high-bandwidth filter in elastic wave resonance. The hybrid parallel bandpass filter 182 is an elastic wave resonance filter. This is an example of a filter topology for a device and inductor. As shown in the figure, a high-bandwidth signal is... Hybrid parallel bandpass filter 182 via ductors L1801 and L1802 The hybrid parallel bandpass filter 182 is provided to elastic resonator A1801, A 1802, A1803, A1804, A1805, A1806, A1807, A1808 , A1809 and A1810, and inductors L1803, L1804 and L1805 It includes a first subfilter which includes the following. The hybrid parallel bandpass filter 182 also has elasticity Resonators A1811, A1812, A1813, A1814, A1815, A1816, A 1817, A1818, A1819 and A1820, and inductors L1806 and L It also includes a second subfilter, 1807. The hybrid parallel bandpass circuit 182 is shown in Figure 1. This includes multiple parasitic capacities not shown in 8. However, these parasitic capacities are hybrid parallel. This is part of the LC circuit of the bandpass filter 182. Hybrid parallel bandpass filter 1 The 82 inductor consists of one or more SMT inductors and / or one or more conductive substrates. May include traces. The elastic resonator of the hybrid parallel bandpass filter 182 is one or more It may include one or more BAW resonators, such as the FBAR shown above.

[0149] The hybrid elastic LC filter 184 includes an elastic resonator, an inductor, and a capacitor. Hmm. As shown in the figure, the hybrid elastic LC filter 184 has elastic resonators A1821, A 1822, A1823, A1824, A1825, A1826, A1827, A1828 and A1829, inductors L1808, L1809, L1810, L1811 and L1 Includes 812, and capacitors C1801 and C1802. Hybrid elastic LC film Ruta 184 is any suitable principle of the hybrid elastic LC filter disclosed herein and It can be implemented according to its advantages. The hybrid elastic LC filter 184 is trip This is the mid-band filter in the Lexa 180.

[0150] The inelastic LC filter 186 is a low-bandwidth filter in the triplexer 180. The inelastic LC filter 186 can be used as a low-pass filter. For example, any suitable principle and advantages of the low-pass filter in Figures 24A and / or 24B Therefore, it can be implemented.

[0151] The harmonic notch filter 188 filters out harmonics from radio frequencies. A notch can be applied to the harmonics of the signal. The harmonic notch filter 188 is an example. For example, the low-pass filter in Figure 24D can be implemented according to any appropriate principle and advantages. The harmonic notch filter 188 shown in the diagram uses capacitors C1803, C1804, C1 Includes 805 and C1806, and inductors L1813 and L1814. Harmonic knock The filter 188 can provide a notch at two harmonic frequencies.

[0152] Figure 19A shows the simulation results for the triplexer 180 in Figure 18. This shows the passbands of filters 182, 184, and 186 of the triplexer 180. Low frequency The pass filter 186 has a passband shown by the solid line curve. Intermediate band filter 184 It has a passband shown by the first dashed curve. Parallel hybrid elastic bandpass filter 182 has passbands indicated by different dashed curves. Parallel hybrid elastic bandpass Filter 182 has a notch in the middle of its passband. This notch is a parallel hive Two different frequency bands are arranged to pass through the lid elastic bandpass filter 182. It can accommodate the frequency range in between. The simulation results show that, compared to the previous design, the trip The Lexa 180 has improved separation across the mid-band and high-band filters. This demonstrates the simulation of the triplexer 180 in Figure 18 having a 9:1 load pull. There is a reasonable insertion loss in the process.

[0153] Figure 19B shows a graph of the simulation results for the triplexer 180 in Figure 18, compared to the previous version. This is shown in comparison to the design. These simulation results are obtained by Triplexer 180. This demonstrates improvements in both insertion loss and segregation compared to previous designs.

[0154] Multiple embodiments of the parallel hybrid elastic filter described herein are band-pass filters. Nevertheless, any appropriate parallel hybrid elastic filters described herein These principles and advantages can be applied to band-stop filters. Parallel hybrid elastic band Block filters are implemented either as standalone filters or within a multiplexer. This is possible. See Figures 20-22 for examples of parallel hybrid elastic band stop filters. It will be explained.

[0155] Figure 20 shows a schematic block of a hybrid parallel bandstop filter 200 according to one embodiment. This is a diagram. The hybrid parallel bandstop filter 200 has a passband of other filters. Using an LC notch filter, which can significantly degrade in-band loss at close range, Without doing so, it can provide relatively wide bandwidth stoppage.

[0156] The parallel hybrid bandstop filter 200 consists of first bandstop filters arranged in parallel with each other. Includes filter 202 and second band-stop filter 204. First band-stop filter 202 and The second band-stop filter 204 is arranged to filter radio frequency signals. The first bandstop filter 202 includes a first elastic resonator and a first inelastic passive component. It is a hybrid elastic passive filter. The first inelastic passive component is at least It may include an inductor and a capacitor. The second bandstop filter 204 is a second elastic resonator It is a hybrid elastic passive filter that includes a second non-elastic passive component. The elastic passive component may include at least an inductor and a capacitor. First band The stop filter 202 has a first stopband, and the second-band stop filter 204 has a second stopband It has a parallel hybrid bandwidth interference, which includes two filters arranged in parallel with each other. The stopband of the stop filter 200 is the individual filter 202 or included in the parallel filter. It increases compared to each of the 204 values.

[0157] The hybrid parallel band-stop filter 200 includes a first stopband and a stop-passband. It has a stopband. The frequency response of the hybrid parallel bandstop filter 200 is as follows: The stopband between the first and second stopbands may have a notch. Parallel hybrid bandpass Symbol 305 for filter 205 is also shown in Figure 20.

[0158] Figure 21 is a schematic diagram of a hybrid parallel bandstop filter 210 according to one embodiment. Yes, it exists. The hybrid parallel bandstop filter 210 is the hybrid parallel bandstop filter shown in Figure 20. This is an example of filter 200. The hybrid parallel bandstop filter 210 is elastic wave resonance This is an example of a filter topology for a device and inductor. Hybrid parallel bandstop filter. Ta210 includes multiple parasitic capacities not shown in Figure 21. However, these parasitic capacities are This is part of the LC circuit of the hybrid parallel bandstop filter 210.

[0159] As shown in the figure, the radio frequency signal passes through inductors L2101 and L2102 This is applied to the hybrid parallel bandstop filter 210. Ta210 is an elastic resonator A2101, A2102, A2103, A2104 and A210 5, and inductors L2103, L2104, L2105, L2106 and L2107 The hybrid parallel bandstop filter 210 also includes a first subfilter 212. , including the second subfloor elastic resonators A216, A217, A218, A219 and A220 Luta 214, inductors L2108, L2109 and L2110, and capacitor C2 This also includes 101. The inductor of the hybrid parallel bandstop filter 210 is one or more S MT inductor and / or one or more conductive traces on the substrate may be included. Hybrid The elastic resonators of the parallel bandstop filter 210 are one or more B, such as one or more FBARs. It may include an AW resonator.

[0160] Figure 22 is a graph of the frequency response of the hybrid parallel bandstop filter 210 shown in Figure 21. Yes. The frequency response in Figure 22 is obtained by the parallel hybrid elastic band stop filter 210. This demonstrates that a relatively wide stopband can be achieved.

[0161] Hybrid elastic LC filter with harmonic suppression

[0162] With the advancement of 5G wireless communication technology, new carrier aggregation (CA) is emerging. Strict intermodulation distortion (IMD) rejection can be identified for the application. CA IMD rejection compliant To give the filter sharp blocking at frequencies near the passband, an elastic support filter is used. It provides relatively low loss and a wide passband, while exhibiting relatively sharp resistance at frequencies near the passband. Designed using hybrid resonators such as hybrid elastic LC resonators with stabilizing properties. Elastic resonators can generate harmonics when relatively high power is applied. Harmonics generated by surface elastic devices or bulk elastic devices leak into the high-frequency band. It may have radiation exceeding the specifications for the standard.

[0163] Since elastic resonator filters can generate harmonics at relatively high power, hybrid elastic L To achieve both C-filter blocking and suppression of harmonics generated by the resonator Therefore, a passive inelastic filter is cascaded to a hybrid elastic LC filter. It is possible. Therefore, it is possible to suppress self-generated harmonics while achieving a relatively wide bandwidth and relatively high To achieve high blocking performance, inelastic LC filters such as integrated passive device (IPD) filters are used. The Luta can be cascaded to a hybrid elastic LC filter.

[0164] The hybrid elastic LC filters and / or multiplexers described herein are one or more A harmonic suppression filter may be included to suppress the higher harmonic frequencies. The disclosed harmonic suppression filter may be a low-pass filter and / or a notch filter. Includes inelastic filters. For example, a harmonic suppression filter may be an IPD filter. The harmonic suppression filters are cascaded to the hybrid elastic LC filters. A cascaded filter can be coupled between a power amplifier and an antenna port. For example, a harmonic suppression filter is used with an antenna port and a hybrid elastic LC filter. They can be joined together.

[0165] Several aspects of this disclosure relate to hybrid elastic LC filters with harmonic suppression. Hybrid elastic LCs are configured to filter radio frequency signals. A passive / elastic filter and an inelastic filter configured to suppress harmonics of the radio frequency signal. Includes a passive / elastic LC filter. The hybrid passive / elastic filter has multiple elastic resonators and one Includes inelastic passive components. Inelastic LC filters are hybrid passive / elastic filters. It is cascaded to the filter.

[0166] An inelastic LC filter can be used as a notch filter. The frequency response of a notch filter is: It may have a notch corresponding to the second harmonic of the line frequency signal. The frequency response of the notch filter is It may have a notch corresponding to the third harmonic of the radio frequency signal. Inelastic LC filters are low It can be used as a pass-through filter. Inelastic LC filters are integrated passive devices of the integrated passive device die. This may include vice.

[0167] A hybrid passive / elastic filter is any of the hybrid resonators disclosed herein. It can be implemented according to any suitable principle and advantages. For example, hybrid passive The elastic filter is the hybrid resonator in Figure 11A, and / or the hybrid resonator in Figure 12. It may include a vibrator. The elastic resonator may include a bulk elastic resonator.

[0168] Hybrid elastic LC filters with harmonic suppression offer various advantages over standalone filters. In the application, multiple arrays are arranged to filter radio frequency signals. In multiplexers including filters, and in wireless communication devices such as mobile phones, It can be installed. Parallel hybrid elastic LC fluid with harmonic suppression as described here The filter is a power amplifier module, a diversity receiver module, or any other suitable It can be implemented in a wireless frequency front-end module.

[0169] Figure 23A is a schematic block diagram of the radio frequency system including filter 230. Filter 230 is cascaded to a low-pass filter 234 according to one embodiment. The radio frequency system also includes a power amplifier 23 Includes 1 and antenna 234. As shown in the figure, the hybrid elastic LC filter 232 is It can receive radio frequency signals from the power amplifier 231. The radio frequency signal may have relatively high power. Hybrid elastic LC filter 23 The elastic resonator 2 can generate one or more harmonics. The low-pass filter 234 is used to filter them. These harmonics can be filtered and removed. Therefore, filter 230 This results in a hybrid elastic LC filter with harmonic suppression. As shown in the figure, the low-pass filter Filter 234 is located between the output section of the hybrid elastic LC filter 232 and the antenna 234. It is coupled to the antenna 234, which receives the radio frequency signal given by the power amplifier 231. You can send a filtered version.

[0170] The hybrid elastic LC filter 232 uses an elastic resonator and an inelastic passive component. It may include. An elastic resonator is one or more bulk elastic wave resonators such as FBARs, one or more SAW resonators, one or more boundary wave resonators, one or more Lamb wave resonators, etc., or any of these. This may include an appropriate combination of the following. The hybrid elastic LC filter 232 includes one or more It may include an LC circuit that includes an inductor and one or more capacitors. The one or more capacitors are One or more IPD capacitors, one or more surface mount capacitors, one or more parasitic capacitors This may include, for example, or any suitable combination thereof. One or more inductors may be one The above IPD inductor, one or more surface mount conductors, conductive traces of the package substrate and This may include one or more inductors, etc., implemented in this manner, or any suitable combination thereof. The hybrid elastic LC filter 232 is a hybrid elastic LC filter disclosed herein. It can be implemented according to any appropriate principle and advantages of the filter. In some examples... The hybrid elastic LC filter 232 includes the hybrid resonator 110 shown in Figure 11A. It can be seen. The hybrid elastic LC filter 232 is shown in Figure 1 for a given application. It may include two hybrid ladder structures 120.

[0171] In a given application, the hybrid elastic LC filter 232 is 3.3G It may have a passband of Hz to 4.2 GHz. According to some other applications, The hybrid elastic LC filter 232 may have a passband of 4.4 GHz to 5 GHz. The hybrid elastic LC filter 232, in various embodiments, (a) carrier (b) Provides a block for a aggregation transmission blocker and a continuous wave out-of-band blocker. It is possible.

[0172] The low-pass filter 234 allows signals below the cutoff frequency to pass through, and the cutoff frequency... It can suppress signals exceeding the wavenumber. Therefore, the cutoff of the low-pass filter 234 The to-off frequency allows the radio frequency signal from the hybrid elastic LC filter 232 to pass through. Furthermore, it can be selected to suppress one or more harmonics of the radio frequency signal. For example, the cutoff frequency is higher than the frequency of the radio frequency signal and the radio frequency The frequency can be set to a frequency below the second harmonic of the signal. In a given embodiment, hybrid The elastic LC filter 232 is a band-pass filter, and the cutoff of the low-pass filter 234 The frequency exceeds the passband of the band-pass filter, and the band-pass filter It is below the second harmonic of the radio frequency signal being passed through.

[0173] The low-pass filter 234 may be an inelastic LC filter. This may include one or more capacitors and one or more inductors. Low-pass filter 23 4 is one or more IPDs, one or more surface mount passive components, on the package substrate. One or more passive components on a package substrate, such as one or more induction traces, or This may include any suitable combination of these. Multiple examples for the low-pass filter 232 The circuit topology is described with reference to Figures 24A and 24B.

[0174] Figure 23B is a schematic block diagram of the radio frequency system including filter 235. Filter 235 is cascaded to a harmonic notch filter 236 according to one embodiment. The system includes a hybrid elastic LC filter 232. The radio frequency system in Figure 23B is shown in Figure 2 Similar to the 3A radio frequency system, but filter 230 in Figure 23A is different in Figure 23B. The difference is that it is replaced by filter 234. Filter 235 is the filter in Figure 23A. Similar to filter 230, but the low-pass filter 234 is a replacement for filter 230 in Figure 23A. It differs in that it includes a harmonic notch filter 236. As shown in the figure, the harmonic notch Filter 236 is connected to the output section of the hybrid elastic LC filter 232 and the antenna 234. They are joined together.

[0175] The harmonic notch filter 236 receives radio frequencies from the hybrid elastic LC filter 232. In order to filter out one or more corresponding harmonics of several signals, the frequency response is adjusted accordingly. It may have more than one notch. The elastic resonator of the hybrid elastic LC filter 232 produces The second harmonic produced is the most prominent harmonic. Therefore, harmonic notch filter 2 36 is a second harmonic notch filter having a notch in the frequency response at the second harmonic. The harmonic notch filter 236 may have notches in one or more other harmonics. In a predetermined embodiment, the hybrid elastic LC filter 232 is cascaded. A harmonic notch filter may have two or more notches on any suitable harmonic. For example, a harmonic notch filter may have notches in the second and third harmonics. In the harmonics of the radio frequency signal provided by the hybrid elastic LC filter 232 Due to the notch, the harmonic notch filter 236 is a hybrid elastic LC filter 232 This allows for the suppression of harmonics generated by the elastic resonator.

[0176] The harmonic notch filter 236 includes one or more capacitors and one or more inductors. It may be an inelastic LC filter. The harmonic notch filter 236 has one or more IPDs, One or more surface-mount passive components, one or more inductive traces on a package substrate One or more passive components on a package substrate, or any suitable combination thereof. This may include combinations. Harmonic notch filter 236 and / or other suitable harmonic notch filters Several example circuit topologies for the filter are illustrated with reference to Figures 24C and 24D.

[0177] Figure 24A is a schematic diagram of an example of a low-pass filter 240. Low-pass filter 2 40 is an example of the low-pass filter 234 in Figure 23A. The low-pass filter 240 is A series of inputs arranged to filter and remove frequencies above the cutoff frequency. Includes ductor L1 and shunt capacitor C1. The inductance of the series inductor L1 is And the capacitance of the shunt capacitor C1 together becomes the low-pass filter 240 The cutoff frequency can be set.

[0178] Figure 24B is a schematic diagram of another example of a low-pass filter 242. Low-pass filter 2 42 is an example of the low-pass filter 234 in Figure 23A. The low-pass filter 242 is Includes series inductors L1-LN and shunt capacitors C1-CN. The inductances of L1 to LN and the capacitances of the shunt capacitors C1 to CN are equal. Together, the cutoff frequency of the low-pass filter 242 can be set. .

[0179] Figure 24C is a schematic diagram of an example harmonic notch filter 243. Filter 243 is an example of the low-pass filter 236 in Figure 23B. (Harmonic notch filter) TA243 includes a shunt series LC circuit. The inductor Ls and ki of the shunt series LC circuit Capacitor C1 allows you to set the notch frequency. Inductor Ls and capacitor The different impedances of C1 combine to create notches at each of the different frequencies. This is possible. The notch can be provided by any appropriate harmonic frequency. For example, the notch is the second harmonic of the radio frequency signal given to the harmonic notch filter 243. It can be set to a wave. As another example, a notch is applied to the harmonic notch filter 243. It can be set to the third harmonic of the radio frequency signal.

[0180] Figure 24D is a schematic diagram of an example harmonic notch filter 244. Filter 244 is an example of the low-pass filter 236 in Figure 23B. (Harmonic notch filter) The TA244 includes two shunt series LC circuits. The first shunt series LC circuit is a capacitor The second shunt series LC circuit includes capacitor C2 and The circuit includes an inductor Ls2. The two shunt series LC circuits produce the second and third harmonics. Notches can be given at different harmonics such as . Therefore, the harmonics shown in the figure The notch filter 244 can provide a notch at two different harmonics. The impedance of the shunt series LC can be set to correspond to the frequency of each notch. Other harmonic notch filters can provide a notch at three or more harmonics.

[0181] Figure 24E is a schematic diagram of an example of a harmonic notch and low-pass filter 245. The harmonic notch and low-pass filter 245 includes a notch in the frequency response at the harmonics. A pass filter can be provided. A shunt-series LC circuit provides a harmonic notch. It is possible. The shunt series LC circuit includes a capacitor C1 and an inductor Ls. The column inductor L1, together with the shunt capacitor C2, provides low-pass filter characteristics. It is possible to obtain it.

[0182] The hybrid elastic LC filter with harmonic suppression described here has a common node. It can be implemented in a multiplexer that includes multiple radio frequency filters coupled together. Multiplexers include diplexers, triplexers, quadplexers, etc. It may include. In a multiplexer, any appropriate number of filters can be combined into a common node. Multiple filters can be combined. They can be coupled together to a common node via a radio frequency switch. Harmonic suppression Several examples of multiplexers, including those equipped with hybrid elastic LC filters, are shown in Figure 25A. See ~25B for details. In the embodiments of these examples, the multiplexer is tri Plexor, however, the principles and advantages associated with such embodiments may apply to any other applications. It can be applied to diplastic multiplexers. Other suitable multiplexers include diplastic multiplexers. This includes species such as *Cyperus spp.* and *Cyperus quadplexa*.

[0183] Figure 25A is a schematic block diagram of the Triplexer 250. 0 is a hybrid bullet cascaded to a low-pass filter 234 according to one embodiment. Includes a high-performance LC filter 232. The triplexer 250 is a high-performance filter 230, as shown in Figure 23A. Includes a bandpass filter 252 and a low-bandpass filter 254. Filter 230, high-bandpass filter Filters 252 and 254 are joined together at the common node. The do is the antenna node in the triplexer 250. Filter 230 is tri This is the intermediate band filter in Plexer 250. The high-band filter 252 is a band-pass filter. It may be used as a filter or a high-pass filter. The high-bandwidth filter 252 is a high-bandwidth radio frequency signal The numbers are arranged to filter. The high-bandwidth filter 252 is described here. It may be a hybrid elastic LC filter implemented according to the appropriate principles and advantages of the intended purpose. As one example, a high-bandwidth filter may include a parallel hybrid elastic passive filter. In some other embodiments, the high-bandwidth filter 252 is such as an inelastic LC circuit element. It can be implemented by any other suitable circuit element. The low-bandwidth filter 254 is low It may be a pass-through filter or a band-pass filter. The low-bandwidth filter 254 is a low-bandwidth wireless filter. They are arranged to filter the frequency signal. The low-bandwidth filter 254 is described here. A hybrid elastic LC filter implemented according to any suitable principle and advantages In some other embodiments, the low-bandwidth filter 254 is an inelastic LC circuit element. It can be implemented by any other suitable circuit element such as the following.

[0184] Figure 25B is a schematic block diagram of the Triplexer 255. 5 is a hybrid cascaded to a harmonic notch filter 236 according to one embodiment. Includes a do-elastic LC filter 232. The triplexer 255 is the triplexer shown in Figure 25A. Similar to 250, but differs in that it includes filter 235 instead of filter 230. Filter 235 provides radio frequencies given by the hybrid elastic LC filter 232. Includes a harmonic notch filter 236 arranged to suppress harmonics in the signal. The wave notch filter 236 is used in several applications to filter out two or more harmonics. In contrast, a notch can be provided. In a given embodiment, the fill of the multiplexer The filter is a hybrid elastic LC cascaded to low-pass and harmonic notch filters. It may include filters.

[0185] Radio frequency module

[0186] The filters disclosed herein can be implemented in various packaged modules. Any suitable principles and advantages of the filters and / or multiplexers disclosed herein may be put into practice. Several examples of packaged modules that can be mounted are disclosed below. The packaged module may include a package that encloses the illustrated circuit elements. A module containing a wavenumber component may be called a radio frequency module. The circuit elements can be arranged on a common package substrate. The package substrate is, for example, A laminated substrate may be used. Figures 26-28 show an example package-like module according to a predetermined embodiment. This is a schematic block diagram of the features of the package-like module. The combinations can be implemented together. Figures 26-28 show the package-like modules of the example. Filters are shown in the log, but any such filter is an appropriate multiplier. It can be implemented in Lexa.

[0187] Figure 26 shows a radio frequency module having a transmission path including a filter 262 according to one embodiment. This is a schematic diagram of module 260. The illustrated module 260 consists of a filter 262 and a power amplifier. Includes a device 263 and a radio frequency switch 264. Radio frequency module including a power amplifier. This may be called a power amplifier module. The power amplifier 263 amplifies the radio frequency signal. The radio frequency switch 264 may be a multi-throw radio frequency switch. Chi 264 can electrically couple the output of the power amplifier 263 to the filter 262. Filter 262 is a transmission filter arranged to filter the transmitted radio frequency signal. This is a filter. Filter 262 is any suitable combination of the filter features disclosed herein. This may include a radio frequency switch that powers the transmission signal path. In some other examples, a radio frequency switch powers the transmission signal path. It can be selectively and electrically connected to the input section of amplifier 263.

[0188] Figure 27 shows a radio frequency module having a receiving path including a filter 272 according to one embodiment. This is a schematic diagram of module 270. The illustrated module 270 is a filter 272, low noise amplification It includes a frequency amplifier 274 and a radio frequency switch 274. The filter 272 receives the radio frequency This is a receiving filter arranged to filter the wavenumber signal. Filter 272 is, This may include any suitable combination of the filter features disclosed herein. Low-noise amplifier 2 74 amplifies the filtered received radio frequency signal given by filter 272. The radio frequency switch 274 receives the output of the low-noise amplifier 274 into the receiving path. It can be electrically coupled to the radio frequency switch 276. This selectively and electrically connects the output of the low-noise amplifier 274 to one or more selected receiving paths. It may be a multi-throw radio frequency switch arranged to match. In such an embodiment, A radio frequency divider (not shown) is provided with a low-noise amplifier 274 and a radio frequency switch 276. They can be joined together.

[0189] Figure 28 shows a schematic representation of a radio frequency module 280 including a filter 282 according to one embodiment. This is a diagram. The illustrated module 280 consists of one or more filters 282, radio frequency switches. Includes a filter 284, a power amplifier 263, and a low-noise amplifier 274. One or more filters 2 82 may include any suitable combination of the filter features disclosed herein. The wavenumber switch 284 controls one or more filters 282 to power amplifier 263 and / or low noise It can be electrically coupled to amplifier 274.

[0190] Wireless communication devices

[0191] The filters described here filter radio frequency signals in wireless communication devices. It is possible to do so. Several examples of wireless communication devices are described with reference to Figures 29 and 30. It can be done.

[0192] Figure 29 shows a radio frequency front end 292 including a filter 293 according to one embodiment. This is a schematic diagram of the wireless communication device 290. The wireless communication device 290 is any appropriate A wireless communication device would suffice. For example, wireless communication device 290 could be a smartphone. It can be used as a mobile phone. As shown in the figure, the wireless communication device 290 has an antenna 191, RF front end 292 including filter 293, transceiver 294, processor 295, Includes Mori 297 and user interface 197. Antenna 291 is RF front-end The RF signal given by the 292 can be transmitted. Such an RF signal is, It may include carrier aggregation signals. Antenna 291 processes the received RF signal. For the purpose of this, it can be applied to the RF front end 292. Such an RF signal is a carrier It may include aggregate signals.

[0193] The RF front end 292 includes one or more power amplifiers, one or more low-noise amplifiers, and RF Switches, receive filters, transmit filters, duplex filters, multiplexers, frequency This may include several multiplexing circuits, or any combination thereof. RF front end The 292 transmits and receives RF signals associated with any appropriate communication standard. This is possible. Filter 293 can be used with any appropriate principle and advantage of the filters described herein. Therefore, it can be implemented. For example, filter 293 refers to one of Figures 1 to 25B. Any appropriate combination of the features described can be implemented. RF Front 292 The filters above may be implemented in accordance with any suitable principles and advantages disclosed herein. It is possible.

[0194] The RF transceiver 294 transmits the RF signal to the RF front for amplification and / or other processing purposes. It can be given to end 292. Transceiver 294 is also RF front end 292 The low-noise amplifier can also process the RF signal it provides. Transceiver 294 is a processor Communicates with 295. Processor 295 may be a baseband processor. Processor 295 provides any suitable baseband processing function for the wireless communication device 290. This is possible. Memory 296 is accessible to processor 295. Memory 296 It can store any suitable data for the wireless communication device 290. The sesser 295 also communicates with the user interface 297. 297 can be any suitable user interface, such as a display.

[0195] Figure 30 shows a filter 293 in a radio frequency front end 292 according to one embodiment. Wireless communication data including a second filter 303 in the diversity receiving module 302 This is a schematic diagram of Vice 300. The wireless communication device 300 is the same as the wireless communication device in Figure 29. Similar to the 290, but the wireless communication device 300 also includes diversity receiving capabilities. The point is different. As shown in Figure 30, the wireless communication device 300 is diversity-oriented. The antenna 301 and the diversity antenna 301 are configured to process the signals received. Diversity module 302 including filter 303 and radio frequency front end 2 It includes a transceiver 304 that communicates with both 92 and the diversity receiving module 302. Filter 303 is implemented according to any suitable principles and advantages of the filters described herein. This is possible. For example, filter 303 is described with reference to one of Figures 1 to 25B. Any appropriate combination of the specified features can be implemented. Diversity receiver module 30 Implement two or more filters of type 2 according to any suitable principles and advantages disclosed herein. It is possible.

[0196] Musubi

[0197] All of the principles and benefits described herein apply to the aforementioned systems, modules, and chips. Filter assemblies, filters, wireless communication devices and methods, as well as other suitable systems Systems, modules, chips, filter assemblies, filters, wireless communication devices and methods It can also be applied to the following. The elements and operations of the various embodiments described above can be further implemented. They can be combined to give a state. The principles and advantages described here are all, A range of approximately 30kHz to 300GHz, such as a range of approximately 450MHz to 8.5GHz. This is implemented in relation to a radio frequency circuit configured to process signals having a certain frequency. It is possible.

[0198] Multiple aspects of this disclosure can be implemented in various electronic devices. Examples include consumer electronic products, chips and / or packaged radio frequency modules. Components for consumer electronic products, electronic testing equipment, uplink wireless communication devices, personal electronics This may include, but is not limited to, rear network communication devices, etc. Examples of consumer electronic products include: This includes mobile phones such as smartphones, smartwatches, or earpieces. Compatible computing devices, telephones, televisions, computer monitors, computers Routers, modems, handheld computers, laptop computers, tablets Auto computers, personal digital assistants (PDAs), automotive electronic systems, etc. Unagi car electronic systems, microwave ovens, refrigerators, stereo systems, digital music players - This may include cameras such as digital cameras, mobile phone memory chips, and household electrical appliances. These are not the only examples. Furthermore, electronic devices may include unfinished products.

[0199] In particular, "can," "can be," "maybe," "for example," Conditional language as described here, such as "like," is generally not stated in particular. Unless otherwise understood from the context of use, the given embodiment is This indicates that other embodiments include features, elements, and / or states, while others do not. It is intended to be so. The term "combination" as commonly used here means that they are directly joined to each other or Refers to two or more elements that can either be joined by one or more intermediate elements. Similarly, the word "connection" as commonly used here refers to something that is directly connected or connected to one or more things. This refers to two or more elements that may be connected via an intermediate element. The words "here," "up," "down," and words of a similar nature are used in this application. When used, it refers to the entire application and any specific part of this application. This does not refer to minutes. Use singular or plural as described above. Each term in the description may include both singular and plural nouns. A list of two or more items is also possible. The terms "or" and "or else" apply to all of the following interpretations of those terms. That is, any item in the list, all items in the list, and items in the list Any combination of the above.

[0200] Although certain embodiments have been described, these embodiments are presented by example. Therefore, this disclosure is not intended to limit the scope of this information. In fact, the information described herein is not limited to the full scope of this disclosure. Novel devices, filters, filter assemblies, chips, methods, apparatus and systems Furthermore, the methods, apparatus and Various omissions, substitutions, and modifications in the system configuration may be made without deviating from the gist of this disclosure. It is possible to do so. For example, delete, move, add, and subdivide the multiple circuit blocks described here. These circuit blocks can be combined, combined and / or modified. Each of these circuit blocks is different It can be implemented in different ways. The attached claims and equivalents are the same as those of this disclosure. It is intended to cover any such form or modification that falls within the scope and summary.

Claims

1. A hybrid elastic LC filter with harmonic suppression, A hybrid passive / elastic filter configured to filter radio frequency signals and 、 An inelastic LC filter is cascaded to the aforementioned hybrid passive / elastic filter and Includes, The aforementioned hybrid passive / elastic filter comprises multiple elastic resonators and one inelastic passive component Includes Nent, The inelastic LC filter is configured to suppress harmonics of the radio frequency signal, Hybrid elastic LC filter.

2. The inelastic LC filter is a notch filter, according to claim 1, a hybrid elastic LC filter Ruta.

3. The frequency response of the notch filter corresponds to the notch of the second harmonic of the radio frequency signal. A hybrid elastic LC filter according to claim 2, having the following features.

4. The frequency response of the notch filter corresponds to two different harmonics of the radio frequency signal. A hybrid elastic LC filter according to claim 2, having a notch.

5. The inelastic LC filter is a low-pass filter, according to claim 1, a hybrid elastic LC filter Filter.

6. Claim 1, the inelastic LC filter includes an integrated passive device of an integrated passive device die. A hybrid elastic LC filter.

7. The inelastic passive component includes a first inductor and a second inductor, The elastic resonator is arranged in series with the first inductor and in parallel with the second inductor. A hybrid elastic LC filter according to claim 1, comprising a first shunt elastic resonator.

8. The hybrid elastic LC filter according to claim 1, wherein the elastic resonator includes a bulk elastic wave resonator. 。

9. The elastic resonator includes a first shunt elastic resonator and a second shunt elastic resonator. The inelastic passive component comprises the first shunt elastic resonator and the second shunt elastic A hybrid elastic LC filter according to claim 1, comprising an LC tank coupled between the resonator and the tank. 。

10. It is a multiplexer, A first filter configured to filter radio frequency signals, The second filter coupled to the first filter in the common node and Includes, The first filter is, Hybrid passive / elastic filters, An inelastic LC filter is cascaded to the aforementioned hybrid passive / elastic filter and Includes, The aforementioned hybrid passive / elastic filter comprises multiple elastic resonators and one inelastic passive component Includes Nent, The inelastic LC filter is configured to suppress harmonics of the radio frequency, multi Plexor.

11. The second filter includes a plurality of second elastic resonators and a second inelastic passive component. Hmm, the multiplexer according to claim 10.

12. The first filter is an intermediate-band filter, The multiplexer according to claim 11, wherein the second filter is a high-bandwidth filter.

13. In the common node, the low bandwidth filter coupled to the first filter and the second filter The multiplexer according to claim 12, further comprising a ruta.

14. Claim 1, the inelastic LC filter includes an integrated passive device of an integrated passive device die. A 0-unit multiplexer.

15. The inelastic passive component includes a first inductor and a second inductor, The elastic resonator is arranged in series with the first inductor and in parallel with the second inductor. A multiplexer according to claim 10, comprising a first shunt elastic resonator.

16. The elastic resonator includes a first shunt elastic resonator and a second shunt elastic resonator. The inelastic passive component comprises the first shunt elastic resonator and the second shunt elastic A multiplexer according to claim 10, comprising an LC tank coupled between the resonator and the tank.

17. The multiplexer according to claim 10, wherein the elastic resonator includes a bulk elastic wave resonator.

18. A wireless communication device, A radio frequency flow including a first filter configured to filter radio frequency signals. End end, An antenna that communicates with the aforementioned radio frequency front end Includes, The aforementioned filter is Hybrid passive / elastic filters, An LC filter cascaded to the aforementioned hybrid passive / elastic filter and Includes, The aforementioned hybrid passive / elastic filter comprises multiple elastic resonators and one inelastic passive component Includes Nent, The inelastic LC filter is configured to suppress harmonics of the radio frequency, The antenna filters the radio frequency signal from which the harmonics have been suppressed. A wireless communication device configured to transmit a message.

19. A wireless communication device according to claim 18, configured as a mobile phone.

20. Further including a baseband processor and a transceiver, The transceiver communicates with the radio frequency front end, and furthermore, the baseband processor A wireless communication device according to claim 18, which also communicates with a sesser.

Images