Multiplexer and wireless communication device with parallel hybrid elastic passive filters

Abstract

To provide a parallel hybrid elastic passive filter, a multiplexer, a wireless communication device, and a method.SOLUTION: A parallel hybrid elastic passive filter 130 includes a first sub-filter 132 and a second sub-filter 134. The first sub-filter 132 is a band-pass filter including a first elastic resonator and a first inelastic passive component, and the second sub-filter 134 is a band-pass filter including a second elastic resonator and a second inelastic passive component. The first sub-filter 132 and the second sub-filter 134 are arranged together to filter radio frequency signals. The parallel hybrid elastic filter 130 may be, for example, a band-pass filter 135 or a band-stop filter.SELECTED DRAWING: Figure 13

Description

[Technical Field]

[0001] SUMMARY OF THE INVENTION Embodiments of the present disclosure relate to hybrid elastic LC filters.

[0002] Cross-reference to priority application Any foreign or domestic priority claim identified in the Application Data Sheet filed with this application Any and all applications filed under this section are hereby incorporated by reference pursuant to 37 CFR Section 1.57. This application is incorporated herein by reference in its entirety. U.S. Provisional Patent Application No. 62 / 7 entitled "Cased Hybrid Elastic LC Filter" 00,142, filed on July 18, 2018, entitled "Parallel Hybrid Elastic Passive Filter" No. 62 / 700,148, filed on July 18, 2018, entitled "U.S. Provisional Patent Application ... A U.S. provisional patent has been filed entitled "Hybrid Elastic LC Filter with Harmonic Suppression" Section 119(e) of the U.S. Patent Act application Ser. No. 62 / 700,146 The disclosure of each of these priority applications is hereby incorporated by reference in its entirety. It can be seen. [Background technology]

[0003] An acoustic wave filter is a filter that includes multiple resonators arranged to filter radio frequency signals. The elastic resonator may be used as a ladder filter to filter radio frequency signals. Examples of acoustic wave filters include surface acoustic wave (SAW) filters and Acoustic wave filters include bulk acoustic wave (BAW) filters and RF filters. For example, in the radio frequency front end of a mobile phone The filter may include an acoustic wave filter.

[0004] The LC filter includes at least an inductor and a capacitor. LC filters are inelastic filters that contain components. It can be tagged.

[0005] Filters relatively high frequency radio frequency signals to meet strict filtering specifications Therefore, it is difficult to filter relatively high frequency signals. Improved filters are desired to filter and meet performance specifications. Summary of the Invention

[0006] Each of the claimed innovations has several aspects, each of which is Not just one of the elements is responsible for the desired attribute. Without further ado, a summary of some prominent features of the present disclosure is provided below.

[0007] One aspect of the present disclosure is a cascaded filter for radio frequency filtering. The cascaded filters are a hybrid elastic LC filter and a and a non-elastic LC filter cascaded to the hybrid elastic LC filter. The 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 on an elastic resonator die. a resonator, a capacitor external to the elastic resonator die, and a capacitor external to the elastic resonator die. The inelastic LC filter includes an LC circuit.

[0008] The hybrid elastic LC filter further includes a second inductor connected in parallel with the second elastic resonator. Here, the second elastic resonator may be configured as a shunt resonator connected in series with the inductor. are arranged.

[0009] The first and second elastic resonators may be shunt resonators. The inductor is arranged as an LC tank coupled between a first elastic resonator and a second elastic resonator. It is possible.

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

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

[0012] The LC circuit of the inelastic LC filter includes integrated passive devices on the integrated passive device die. The inductor of the hybrid elastic LC filter may be a surface mount inductor. The inductors of the hybrid elastic LC filter may include conductive traces on the substrate. The passive devices may include an LC shunt circuit and a series LC resonant circuit.

[0013] The LC circuit of the inelastic LC filter may include a series LC resonant circuit and an LC shunt circuit. A series LC resonant circuit may include a parallel LC circuit. An LC shunt circuit may include a series LC circuit. The LC circuit of the non-elastic LC filter may further include a second shunt series LC circuit. .

[0014] The passband of the cascaded filters can be set by an inelastic LC filter. The first elastic resonator is arranged to provide rejection in a frequency band outside the passband. The lower limit of the passband may be at least 3 GHz. It can range from at least 3.3 GHz to 4.2 GHz.

[0015] Another aspect of the present disclosure is a method for detecting a signal from a first filter coupled to a common node, and a second filter coupled to the common node. The first filter is a multiplexer that filters the radio frequency signal into a filter and a second filter that filters the radio frequency signal. The first filter is configured to filter a hybrid elastic LC filter; and a non-elastic LC filter cascaded to the hybrid elastic LC filter. The hybrid elastic LC filter consists of a first elastic resonator on an elastic resonator die and a second elastic resonator on an elastic resonator die. a resonator, a capacitor external to the elastic resonator die, and a capacitor external to the elastic resonator die. and an inductor.

[0016] The multiplexer may further include a third filter coupled to the common node. The filter may include a second hybrid elastic LC filter. The second filter may include a second inelastic LC filter. It may include a C filter.

[0017] Another aspect of the present disclosure is a radio frequency (RF) transmitter / receiver (RREC) receiver. The radio frequency front end is configured to transmit a signal via an antenna. It includes a filter configured to purposely filter radio frequency signals. The converter consists of a hybrid elastic LC filter and a cascade The hybrid elastic LC filter includes an elastic resonance filter and a non-elastic LC filter connected to the elastic resonance filter. an elastic resonator on a resonator die, a capacitor external to the elastic resonator die, and a capacitor connected to the elastic resonator die. and an inductor external to the device die.

[0018] The wireless communication device may be a mobile phone.

[0019] Another aspect of the present disclosure is a cascaded filter circuit for radio frequency filtering. This is a hybrid elastic LC filter and a non-elastic LC filter that includes an LC circuit. A hybrid elastic LC filter and a non-elastic LC filter are selectively coupled. The hybrid elastic LC filter filters radio frequency signals. The hybrid elastic LC filter is constructed by using an elastic resonator die. a resonator die, a capacitor external to the resonator die, and a capacitor external to the resonator die. and an inductor located at

[0020] The cascaded filter circuit further includes a second inelastic LC filter. The switch couples the hybrid elastic LC filter and the inelastic LC filter in the first state. and the switch is configured to connect the hybrid elastic LC filter and The inelastic LC filter is configured to couple two inelastic LC filters. The second inelastic filter may be a receive filter.

[0021] The cascaded filter circuit further includes a second inelastic LC filter. The switch couples the hybrid elastic LC filter and the inelastic LC filter in the first state. and the switch is configured to connect 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. Here, the elastic resonator is arranged as a shunt resonator in series with an inductor. do.

[0023] The hybrid elastic LC filter may further include a second elastic resonator. The second elastic resonator may be a shunt resonator. The hybrid elastic resonator can be arranged as an LC tank between the first and second elastic resonators. The LC filter further includes a second inductor connected in series with the first elastic resonator and a second elastic resonator. and a third inductor connected in series with the first inductor.

[0024] The acoustic resonator may be a bulk acoustic wave resonator.

[0025] The LC circuit of the inelastic LC filter may include an integrated passive device of the integrated passive device die. The inductor of the hybrid elastic LC filter may be a surface mount inductor. The inductors of the 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 of can be set by an inelastic LC filter. The lower limit of the passband is It should be at least 3 gigahertz.

[0027] Another aspect of the present disclosure is a method for filtering a radio frequency signal. The lid includes coupling an elastic LC filter and a non-elastic LC filter with a switch. The hybrid elastic LC filter is made up of an elastic resonator on an elastic resonator die and a A capacitor external to the die and an inductor external to the elastic resonator die are included. The method also includes the step of coupling a hybrid elastic LC filter and an inelastic filter together. This involves filtering the radio frequency signals in between.

[0028] The method further comprises: switching the hybrid elastic LC filter to a non-elastic LC filter; The hybrid elastic LC filter and the second non-elastic filter are decoupled by a switch. and coupling a resilient LC filter to the power amplifier. By applying a frequency signal to an inelastic LC filter and a low noise amplifier, a second inelastic filter is generated. and amplifying the filtered signal provided by the filter.

[0029] Filtering is done using the elastic resonators of the hybrid elastic LC filter. Outside the passband of the filter including the hybrid elastic LC filter and the inelastic LC filter The method may include providing a blocking property.

[0030] The radio frequency signal may have a frequency in the range of 3 gigahertz to 5 gigahertz.

[0031] Another aspect of the present disclosure is a radio frequency (RF) transmitter / receiver (RREC) receiver. The radio frequency front end is configured to transmit a signal via an antenna. It includes a filter configured to purposely filter radio frequency signals. The filter consists of a hybrid elastic LC filter, a non-elastic LC filter, and a hybrid elastic LC filter. a filter and a switch configured to selectively couple the inelastic LC filter. The hybrid elastic LC filter is a filter that includes an elastic resonator on an elastic resonator die and a dielectric film on the elastic resonator die. and LC components external to the battery.

[0032] The wireless communication device may be a mobile phone.

[0033] Another aspect of the present disclosure is a filter comprising a first sub-filter and a second sub-filter coupled in parallel to the first sub-filter. The first sub-filter is a parallel hybrid elastic passive filter including a first sub-filter and a second sub-filter. The second sub-filter includes a first elastic resonator and a first inelastic passive component. The first sub-filter and the second sub-filter include a resonator and a second inelastic passive component. The filters are arranged together to filter radio frequency signals.

[0034] The first sub-filter and the second sub-filter are band-pass filters having a pass band. The frequency response of the parallel hybrid elastic passive filter is a first sub-passband corresponding to the first sub-filter, and a second sub-passband corresponding to the second sub-filter; a notch at a notch frequency between the first sub-passband and the second sub-passband.

[0035] The first sub-filter and the second sub-filter are band-stop filters having stop bands. The band stop filter may have a notch in the stop band.

[0036] The first sub-filter may include a bulk acoustic wave resonator that includes an acoustic 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. The resonators are arranged as a series of shunt resonators.

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

[0039] The second non-resilient passive component may include an integrated passive device.

[0040] The first sub-filter and the second sub-filter may have different passbands. The lower passband limit of the mid-band elastic passive filter may be at least 2 gigahertz.

[0041] Another aspect of the present disclosure is a multiplexer having parallel hybrid elastic passive filters. The multiplexer has a first filter coupled to a common node and a second filter coupled to the common node. and a second filter connected to the first filter for filtering the radio frequency signal. The first filter includes a first sub-filter juxtaposed with a second sub-filter. The first sub-filter 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 bandpass filter. The frequency response of the first filter may be A first sub-passband corresponding to the filter and a second sub-passband corresponding to the second sub-filter. and a notch at a 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 stop band and a notch in the stop band. This can be considered.

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

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

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

[0047] The multiplexer further includes a shared filter connected in series between the first filter and the common node. where the shared filter is also serially connected between the second filter and the common node. The shared filter may be a high-pass filter.

[0048] Another aspect of the present disclosure is a radio frequency front end and a method for communicating with the radio frequency front end. A radio frequency front end is a wireless communication device that includes an antenna for receiving a radio frequency signal. a filter configured to filter the wavenumber signal; The first sub-filter includes a first elastic resonator and a second elastic resonator. The second sub-filter includes a first inelastic passive component. The second sub-filter includes a second elastic resonator and a second inelastic passive component. Includes elastic passive components.

[0049] Another aspect of the present disclosure is a multiplexer having a hybrid elastic passive filter. The multiplexer comprises a plurality of filters configured to filter respective radio frequency signals. a filter and a shared filter coupled between each of the plurality of filters and a common node; and a radio frequency filter coupled to the common node. The filters have different passbands. At least a first filter of the plurality of filters has a plurality of passbands. The resonator includes an elastic resonator and one inelastic passive component.

[0050] The plurality of filters may include a first filter, a second filter, and a third filter. The filter may be a first bandpass filter having a first passband. The third filter may be a second band-pass filter having two passbands. The filter may be a band-stop filter having a stop band including a first pass band and a second pass band.

[0051] The shared filter may be a high-pass filter. The radio frequency filter may be a low-pass filter. This can be considered.

[0052] The shared filter may be an inelastic LC filter. The shared filter may include a plurality of second elastic resonances. The device may include a detector and an LC component.

[0053] The inelastic passive component is an inductor arranged in parallel with the first elastic resonator of the elastic resonators. It may include a cutter.

[0054] The elastic resonator can be embedded in the elastic resonator die. , an inductor external to the elastic resonator die, and a capacitor external to the elastic resonator die. It may include data.

[0055] A second filter of the plurality of filters includes a plurality of second elastic resonators and a second inelastic passive capacitor. The first filter may have a first passband and the second filter may have a second passband. Both the first passband and the second passband may have a frequency range from 2 GHz to 5 GHz. Both the first passband and the second passband may be within a frequency range of 2 GHz. The frequency range may be between 100 MHz and 3 GHz.

[0056] The multiplexers may be arranged as quadplexers.

[0057] Another aspect of the present disclosure is a wireless communication system including an antenna and a multiplexer in communication with the antenna. The multiplexer is a receiver device that filters each radio frequency signal. a plurality of filters configured to provide a common node; and The common node includes a coupled shared filter and a radio frequency filter coupled to the common node. The plurality of filters includes a first filter including a plurality of elastic resonators and one inelastic passive component. Including Ruta.

[0058] A second filter of the plurality of filters includes a plurality of second elastic resonators and a second inelastic passive capacitor. The wireless communication device may include a carrier aggregation component at a common node. Carrier aggregation can be configured to support and a second carrier, wherein the first carrier is in a first passband of the first filter. a second carrier is located outside the first passband and in the second passband of the second filter; It is over-band.

[0059] Another aspect of the present disclosure is a multiplexer having a hybrid elastic passive filter. The multiplexer includes a first filter and a second filter having different radio frequency passbands. a plurality of filters including a common node and a common filter coupled between each of the plurality of filters and a common node; The first filter includes a high-pass filter and a low-pass filter coupled to the common node. The first filter includes a plurality of first elastic resonators and a first LC circuit. It includes a second elastic resonator and a second LC circuit.

[0060] The plurality of filters further includes a bandstop filter including the passbands of the first filter and the second filter. The filter may include:

[0061] Another aspect of the present disclosure is a hybrid elastic LC filter with harmonic suppression. The lid elastic LC filter is a hybrid designed to filter radio frequency signals. A lid passive / elastic filter and a cascade of the hybrid passive / elastic filter. Hybrid passive / elastic filters include multiple elastic resonance filters. The non-elastic LC filter is a filter for filtering radio frequency signals. It is configured to suppress harmonics.

[0062] The inelastic LC filter may be a notch filter. The frequency response of the notch filter is The frequency response of the notch filter is , may have two notches corresponding to different harmonics of the radio frequency signal.

[0063] The inelastic LC filter may be a low pass filter.

[0064] The inelastic LC filter may include integrated passive devices of the integrated passive device die.

[0065] The acoustic resonator may include a bulk acoustic wave resonator.

[0066] The non-elastic passive component may include a first inductor and a second inductor. The oscillator includes a first shunt resistor arranged in series with the first inductor and in parallel with the second inductor. The resonator may include a resonant cavity.

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

[0068] Another aspect of the present disclosure is a first filter configured to filter a radio frequency signal. and 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 / Hybrid passive / non-elastic LC filters cascaded with elastic filters. The elastic filter includes a plurality of elastic resonators and one inelastic passive component. The C filter is configured to suppress harmonics of the radio frequency signal.

[0069] The second filter includes a plurality of second elastic resonators and a second inelastic passive component. The first filter may be a mid-band filter and the second filter may be a high-band filter. The multiplexer may further provide a first filter and a second filter at a common node. It may include a coupled low pass filter.

[0070] The inelastic LC filter may include integrated passive devices of the integrated passive device die.

[0071] The non-elastic passive component may include a first inductor and a second inductor. The oscillator includes a first shunt resistor arranged in series with the first inductor and in parallel with the second inductor. The antenna may include a resonator.

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

[0073] The acoustic resonator may include a bulk acoustic wave resonator.

[0074] Another aspect of the present disclosure is a radio frequency front end and a method for communicating with the radio frequency front end. A radio frequency front end is a wireless communication device that includes an antenna for receiving a radio frequency signal. The filter includes a hybrid filter configured to filter the wavenumber signal. a hybrid passive / elastic filter and a hybrid passive / elastic filter cascaded to the hybrid passive / elastic filter. Hybrid passive / elastic filters include LC filters and passive / elastic filters. Contains inelastic passive components. Inelastic LC filters suppress harmonics of radio frequency signals. The antenna is configured to filter radio frequency signals with suppressed harmonics. The system is configured to send a tagged version.

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

[0076] The wireless communication device may further include a baseband processor and a transceiver, where: The transceiver communicates with a radio frequency front end and also with a baseband processor. Believe.

[0077] For purposes of summarizing this disclosure, certain aspects, advantages and novel features of the innovation are set forth herein. It will be understood that not all such advantages may be realized in any one This is not achieved in any particular embodiment of the present invention. , one advantage or group of advantages taught herein, or other advantages taught or suggested herein. It may be embodied or performed in a manner that achieves or optimizes, but does not necessarily achieve, Cut. [Brief explanation of the drawings]

[0078] Several embodiments of the present disclosure will now be described, by way of non-limiting example, with reference to the accompanying drawings, in which:

[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 an embodiment, Figure 1B is a schematic block diagram of a radio frequency system including a cascaded filter in a signal path between a power amplifier and an antenna according to an embodiment, and Figure 1C is a schematic block diagram of a radio frequency system including a cascaded filter in a signal path between an antenna and a low noise amplifier according to an embodiment. [Figure 2] 2A and 2B are schematic block diagrams of a cascaded filter circuit including a hybrid elastic LC filter coupled to an LC filter via a switch according to an embodiment; [Figure 3] Figure 3A is a schematic block diagram of a radio frequency system of cascaded filter circuits according to one embodiment, Figure 3B is a schematic block diagram of a radio frequency system having cascaded filter circuits according to another embodiment, and Figure 3C is a schematic block diagram of a radio frequency system having cascaded filter circuits according to another embodiment. [Figure 4] 4A and 4B are schematic block diagrams of a multiplexer including cascaded filters and other filters according to one embodiment and another embodiment, respectively. [Figure 5] Figure 5A is a schematic block diagram of one embodiment of a multiplexer including cascaded filters and other filters coupled to a common mode via a switch, and Figure 5B is a schematic block diagram of another embodiment of a multiplexer including cascaded filters and other filters coupled to a common mode via a switch. [Figure 6] Figure 6A is a schematic diagram of a cascaded filter according to one embodiment, and Figure 6B is a graph of the frequency response of the cascaded filter of Figure 6A. [Figure 7] FIG. 10 is a schematic diagram of a cascaded filter according to another embodiment. [Figure 8] FIG. 10 is a schematic diagram of a cascaded filter according to another embodiment. [Figure 9] FIG. 10 is a schematic diagram of a cascaded filter according to another embodiment. [Figure 10] FIG. 10 is a schematic diagram of a cascaded filter according to another embodiment. [Figure 11] Figure 11A is a schematic diagram of a hybrid resonator according to one embodiment, and Figure 11B is a graph of the frequency response of the hybrid resonator of Figure 11A. [Figure 12] FIG. 10 is a schematic diagram of a hybrid resonator according to another embodiment. [Figure 13] FIG. 1 is a schematic block diagram of a hybrid parallel bandpass filter according to an embodiment. [Figure 14] FIG. 1 is a schematic block diagram of a diplexer including a hybrid parallel bandpass filter according to an embodiment. [Figure 15] FIG. 1 is a schematic block diagram of a triplexer including a hybrid parallel bandpass filter according to an embodiment. [Figure 16]FIG. 1 is a schematic block diagram of a triplexer including a shared high-pass filter and a hybrid parallel band-pass filter according to an embodiment. [Figure 17] FIG. 1 is a schematic block diagram of a quadplexer including a shared high-pass filter and a hybrid band-pass filter according to an embodiment. [Figure 18] FIG. 1 is a schematic block diagram of a triplexer including a hybrid parallel bandpass filter according to an embodiment. [Figure 19A] The simulation results of the triplexer of FIG. 18 are shown. [Figure 19B] A graph of the simulation results of the triplexer of FIG. 18 is shown in comparison with previous designs. [Figure 20] FIG. 1 is a schematic block diagram of a hybrid parallel band-stop filter according to an embodiment. [Figure 21] FIG. 1 is a schematic diagram of a hybrid parallel bandstop filter according to an embodiment. [Figure 22] 22 is a graph of the frequency response of the hybrid parallel bandstop filter of FIG. 21. [Figure 23] 23A and 23B are schematic block diagrams of a radio frequency system including a hybrid elastic LC filter cascaded with a low pass filter and a second harmonic notch filter, respectively, according to an embodiment. [Figure 24] Figure 24A is a schematic diagram of an example low-pass filter, Figure 24B is a schematic diagram of another example low-pass filter, Figure 24C is a schematic diagram of an example second harmonic notch filter, Figure 24D is a schematic diagram of an example harmonic notch filter, and Figure 24E is a schematic diagram of an example second harmonic notch and low-pass filters. [Figure 25]25A and 25B are schematic block diagrams of a triplexer including a hybrid elastic LC filter cascaded with a low-pass filter and a second harmonic notch filter, respectively, according to an embodiment. [Figure 26] 1 is a schematic diagram of a radio frequency module having a transmit path including a filter according to an embodiment; [Figure 27] FIG. 1 is a schematic diagram of a radio frequency module having a receive path including a filter according to an embodiment. [Figure 28] 1 is a schematic diagram of a radio frequency module including a filter according to an embodiment; [Figure 29] 1 is a schematic diagram of a wireless communication device including a filter according to an embodiment. [Figure 30] FIG. 10 is a schematic diagram of a wireless communication device including a filter according to another embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0080] The following detailed description of certain embodiments represents various descriptions of specific embodiments. However, the innovations described herein are defined and covered, for example, by the claims. In this description, the same reference numerals refer to the same Reference is made to the drawings which may show identical or functionally similar elements. It is further understood that elements shown in the drawings are not necessarily to scale. The embodiments may include more elements than shown in the drawings and / or may include more elements than shown in the drawings. Additionally, some embodiments may include any subset of features from more than one drawing. The headings provided herein are for convenience only. and do not necessarily affect the scope or meaning of the claims.

[0081] The present disclosure relates to filters including elastic and inelastic passive components. Certain embodiments may include a hybrid elastic LC filter cascaded with an LC filter. Such filters can achieve relatively wide passbands and, Some embodiments can be used in parallel with each other to meet stringent out-of-band rejection specifications. Filters with arranged elastic and inelastic passive components Such filters have a relatively wide bandwidth and a stopband that is relatively close to the passband. High rejection in the passband can be achieved without high losses in the passband. The disclosed embodiment includes an inelastic L filter cascaded with a hybrid passive / elastic filter. C filters, where the inelastic LC filter is a hybrid passive / elastic filter Such filters are arranged to suppress harmonics of the radio frequency signal provided by the filter. The converter achieves relatively high bandwidth and high rejection while suppressing self-generated harmonics. Any suitable combination of features of the embodiments disclosed herein may be used in conjunction with one another. Two or more embodiments may be used interchangeably in various applications. They can be implemented together.

[0082] Hybrid elastic LC filter cascaded to LC filter

[0083] With the advancement of fifth-generation (5G) wireless communication technology, inelastic wideband - ultra-high bandwidth (UHB) filters Router designs are encountering difficulties in meeting new carrier aggregation specifications. New carrier aggregation technologies typically introduce a lot of intermodulation noise that can degrade receiver sensitivity. Therefore, the carrier aggregation specification requires further adjustments to the filters. They may also have stricter intermodulation distortion (IMD) rejection specifications.

[0084] LC bandpass filters, such as integrated passive device (IPD) bandpass filters, are widely used. It has the advantage of wide bandwidth and relatively good out-of-band rejection. A bandpass filter does not have particularly sharp rejection at frequencies close to the passband. Inelastic passband filters have a higher passband edge frequency than elastic wave filters. This generally results in a loss in the stopband close to the passband. On the other hand, this is not preferable when high blocking properties are desired.

[0085] Elastic resonator filters have a higher quality factor (Q) than LC resonators, resulting in a higher passband It can provide high rejection at close frequencies without high edge roll-off losses. In order to achieve both a wide bandwidth and sharp rejection in the stopband close to the passband, A passive inelastic filter can be cascaded with a hybrid elastic LC filter. do.

[0086] A carrier having relatively sharp rejection at frequencies relatively close to the passband of the filter. Hybrid elastic LC filters are used to provide an aggregation IMD rejection compliant filter. Hybrid elastic LC filters can be implemented using one or more capacitors, The wideband filter may include one or more inductors and one or more elastic resonators. The hybrid elastic LC filter comprises an elastic resonator, at least one inductor, and at least one The resonator may include a hybrid resonator including two capacitors.

[0087] By cascading the hybrid elastic LC filter to the LC filter, the relative provides a wide passband with low loss relative to the passband of the cascaded filter. The LC filter can provide relatively sharp rejection at frequencies close to The passive device die may include an integrated passive device (IPD). The filter may include one or more bulk acoustic wave resonators. The combination of bulk acoustic wave resonators and LC circuit elements provides a relatively wide passband. Both are also capable of meeting relatively stringent out-of-band rejection specifications.

[0088] Aspects of the present disclosure provide a cascaded filter for filtering radio frequency signals. The cascaded filter is a hybrid elastic LC filter and a and a non-elastic LC filter cascaded to the hybrid elastic LC filter. The hybrid elastic LC filter comprises a plurality of elastic resonators, a capacitor, and an inductor. The inelastic LC filter includes an LC circuit.

[0089] The cascaded filter disclosed herein is applicable to any radio band in which an elastic resonator can be used. It can be implemented for various frequency bands, including the 1000MHz band. The filter must be at least 2.5 gigahertz (GHz) or The cascaded filters may include a passband having a lower frequency limit of at least 3 GHz. The data is available for a given application at approximately 4.5 GHz, 6 GHz, and 8.5 GHz. Or it may have a relatively high upper passband, such as about 10 GHz. The cascaded filter may be connected to a power amplifier module, a diversity receiver module, or any The present invention may be implemented in any suitable radio frequency front end module. The cascaded filters described have the following design specifications: relatively low insertion loss ( IL), a relatively sharp frequency cutoff, and relatively strong intermodulation frequencies and harmonics Restraint can be satisfied.

[0090] FIG. 1A illustrates a hybrid elastic LC filter 12 and an LC filter 14 according to one embodiment. 1 is a schematic block diagram of a cascaded filter 10 including: The filter 10 has a first port RF1 and a second port RF2. The LC filter 12 and the LC filter 14 are connected to each other between the first port RF1 and the second port RF2. The radio frequency signal is applied to the first port RF The radio frequency signal can propagate from port 1 to the second port RF2. The light can propagate from the second port RF2 to the first port RF1 in the

[0091] The hybrid elastic LC circuit 12 includes one or more elastic resonators, one or more inductors, and and one or more capacitors. The one or more elastic resonators are thin film bulk acoustic wave resonators (F For example, the BAW resonator can operate at frequencies above 2.5 GHz. It may be advantageous to filter high frequency signals such as rotating frequencies. The elastic resonator may alternatively or additionally comprise one or more surface acoustic wave (SAW) resonators, one or more and / or any other suitable elastic wave resonator, such as one or more Lamb wave resonators. The hybrid elastic LC filter 12 may include an externally mounted elastic resonator. The hybrid elastic 12 may include a capacitor and an inductor in the ladder filter. The hybrid elastic filter 12 may be a fixed The fixed filter may be a tunable filter in some instances. Hybrid elastic LC filters can be implemented with lower complexity than conventional filters. 12 may be tunable in some applications. If the flexible LC filter 12 is tunable, the notch and / or the stop band can be tuned. It can be made possible to perform scanning.

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

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

[0094] FIG. 1C illustrates a cascade in the signal path between the antenna 17 and the low noise amplifier 19 according to one embodiment. FIG. 1C is a schematic block diagram of an RF system 18 including the caded filter 10. , it is shown that the cascaded filter 10 can be included in the receive signal path. In this configuration, the first port RF1 of the cascaded filter 10 is connected to a low noise amplifier. The second amplifier 19 can be electrically coupled to the input of the cascaded filter 10. Port RF2 can be electrically coupled to antenna 17. In this case, the first port RF1 of the cascaded filter 10 supplies power to the antenna 17. The second port RF2 of the cascaded filter 10 is a low noise The sound amplifier can be electrically coupled to the input of amplifier 19 .

[0095] FIG. 2A illustrates an embodiment of a LC filter 14A coupled to LC filters 14N through a switch 22. A schematic diagram of a cascaded filter circuit 20 including an integrated hybrid elastic LC filter 12. 1 is a schematic block diagram of a cascade-connected filter circuit 20. The cascade-connected filter circuit 20 includes a plurality of LC circuits 14A to The hybrid elastic LC filter 12 can be shared among the 14N. , a hybrid elastic LC filter 12 is selected to implement a cascaded filter. The switch 22 shown is a multi-throw radio frequency switch. The switch 22 switches the hybrid elastic LC filter 12 to the selected LC filter. The switch 22 may have any suitable number of throws and may be electrically coupled to a The cascaded filter circuit 20 has a corresponding number of LC filters 14A to 14N. The illustrated LC filters 14A and 14N are each a cascaded filter circuit 20. Corresponding port RF 21 and RF 2N Cascaded filter circuits In the circuit 20, the hybrid elastic LC filter 12 is In combination with one or more selected In a given application, the hybrid elastic LC The filter 12 is electrically coupled to a selected one of the LC filters 14A-14N. To tune rejection at frequencies relatively close to one or more of the passbands It may be tunable.

[0096] FIG. 2B illustrates a hybrid elastic LC filter 12 via a switch 22 according to an embodiment. A schematic diagram of a cascaded filter circuit 25 including an LC filter 14 coupled to A and 12N. 1 is a schematic block diagram of a cascaded filter circuit 20. The cascaded filter circuit 20 comprises a plurality of hybrid elastic The LC filter 14 can be shared among the LC circuits 12A to 12N. , the LC filter 14 to implement the cascaded filter, The illustrated switch 22 can be electrically connected in series with a flexible LC circuit. The switch 22 switches the LC filter 14 to the selected hybrid resonant frequency. The switch 22 may have any suitable number of throws. and the cascaded filter circuit 25 has a corresponding number of hybrid elastic LC filters. The hybrid elastic LC filters 12A and 142 shown in the figure are Each of these is connected to a corresponding port RF of the cascaded filter circuit 25. 11 and RF 1N So are connected to each other.

[0097] FIG. 3A illustrates a radio frequency system 30A of cascaded filter circuits according to one embodiment. 2A is a schematic block diagram of a radio frequency system 30. 20 is an example system in which the antenna 32 may be implemented. coupled to the hybrid elastic LC filter 12, the switch 22 being a transmit / receive switch; The LC filters 14A and 14B are connected to the power amplifier 34 and the low noise amplifier 36, respectively. The cascaded circuit 25 of FIG. 2B is a radio frequency system similar to the radio frequency system 30A. It can be implemented in a wave number system.

[0098] FIG. 3B illustrates a radio frequency system having cascaded filter circuits according to another embodiment. 3B is a schematic block diagram of the LC circuits 14A and 14B. 34A and 34B may be present on different transmission paths. The hybrid elastic LC filter 12 is (a) a filter between the power amplifier 34A and the antenna 32. (b) a cascaded filter circuit with an LC filter 14A therebetween; and (c) a power amplifier 34. and a cascaded filter circuit having an LC filter 14B between B and the antenna 32. It may be included.

[0099] FIG. 3C illustrates a radio frequency system having cascaded filter circuits according to another embodiment. 3C is a schematic block diagram of a cascaded filter of a radio frequency system 30C. This data can be implemented, for example, in diversity reception applications. , LC circuits 14A and 14B are different with low noise amplifiers 36A and 36B, respectively. Therefore, the hybrid elastic LC filter 12 can be (a) A cascade amplifier with an LC filter 14A between a low-noise amplifier 36A and an antenna 32. (b) an LC filter between the low noise amplifier 36B and the antenna 32; 14B and a cascaded filter circuit with the same.

[0100] FIG. 4A illustrates a multi-filter including cascaded filters and other filters according to one embodiment. 1 is a schematic block diagram of a multiplexer 40. The multiplexer 40 is coupled to a common node. As shown, the LC filter 14 and the hybrid elastic LC filter Cascaded filters including filter 12 and another filter 42 are connected together at a common node. In the multiplexer 40, the LC filter 14 is a hybrid elastic L The multiplexer 40 is connected to a common node via a C filter 12. It can be a triplexer with two filters, a triplexer with three filters, a triplexer with four filters, The other filter 42 may be a quadplexer, etc. The other filter 42 may include any suitable number of filters. The other filter 42 may be one or more LC filters (e.g., IPD filters), one or more acoustic wave filters, one or more hybrid LC filters, etc., or any of these Any suitable combination may be included.

[0101] FIG. 4B illustrates a multi-stage filter including cascaded filters and other filters according to another embodiment. 4A is a schematic block diagram of a lexer 45. The multiplexer 45 is the same as the multiplexer of FIG. The hybrid elastic LC filter 12 is similar to the filter 40, but the hybrid elastic LC filter 12 is connected via the LC filter 14. The difference is that they are connected to a common node.

[0102] Multiple filters communicate with a common node, such as an antenna node, via a switch. FIG. 5A shows cascaded filters coupled to a common node via a switch 52. 4 is a schematic diagram of a radio frequency system 50 including a cascade filter 42 and another filter 42. The hop-connected filter, other filters 42, and switch 52 implement switchplexing. Switchplexing may implement on-demand multiplexing.

[0103] FIG. 5B illustrates a cascade connection coupled to a common mode through a switch according to another embodiment. FIG. 5 is a schematic block diagram of a radio frequency system 55 including a filter and other filters. Radio frequency system 55 is similar to radio frequency system 50 of FIG. 5A, but with a hybrid The difference is that the thick elastic LC filter 12 and the LC filter 14 are arranged in a different order. do.

[0104] FIG. 6A is a schematic diagram of a cascaded filter 60 according to one embodiment. The band connection filter 60 is configured to receive the band 42 signal and / or the band 43 signal and / or the band 4 arranged to pass radio frequency signals having frequencies above 3 GHz, such as .8 signals. In such an application, the filter 60 may be a bandpass filter. The acoustic wave resonator may be a BAW resonator. 5G technology can be used in 5G new radio applications. The cascaded filter 60 is cascaded to the LC filter 64. The hybrid elastic LC filter 62 is connected to the LC filter 62. 62 is an example of the hybrid elastic LC filter 12. The LC filter 64 is an LC filter. This is an example of the filter 14.

[0105] The hybrid elastic LC filter 62 includes elastic resonators A61 and A62, inductors L601, L602, L603, L604, L605, and L606 , and capacitors C601, C602, C603, and C604. The elastic resonators A61 and A62 may be BAW resonators, such as FBARs. In some examples, the elastic resonators A61 and A62 may include SAW resonators, temperature compensated SAW (TCSAW) resonators, boundary acoustic wave resonators, Lamb wave resonators, etc., or any suitable combination thereof. Inductors L601, L602, L603, L604, L605, and L606, and capacitors C601, C602, C603, and C604 are LC / inelastic components. The LC / inelastic components of the hybrid elastic LC filter 62 can be implemented externally to the die containing the elastic resonators A61 and A62. The LC / inelastic components of the hybrid elastic LC filter 62 may include one or more surface mount technology (SMT) inductors and / or capacitors. In some examples, the LC / inelastic components of the hybrid elastic LC filter 62 may include one or more IPDs and / or one or more inductive traces on a package substrate.

[0106] As shown, the hybrid elastic LC filter 62 is connected in parallel to the elastic resonator A62. The hybrid resonator structure includes an inductor L602, where inductor L60 3 is connected in series with the inductor and the elastic resonator A62. Further details are provided with reference to Figures 11A and 11B. The LC filter 62 shown also , the elastic resonators A61 and A62 are inductors L603 and L606 in the shunt circuit Each includes an LC tank between elastic nodes arranged in series, where the LC tank is The hybrid resonator structure includes a capacitor C604 and an inductor L605. Further details are provided with reference to FIG.

[0107] The LC filter 64 may be a band-pass filter. The LC filter 64 may be a band pass filter for the band 42 / band 43. an IPD portion 65, a package substrate portion 66 including traces on the package substrate, and an SMT The IPD section 65 includes an IPD capacitor C60 and an SMT section 67 including components. 5. C606, C607, C608, C609 and C610, and IPD inductor L The package substrate 66 includes inductors L609, L610, L611, and SMT section 67 includes an inductive trace arranged as SMT capacitor C61. Includes C612 and C613.

[0108] As shown, the LC filter 64 includes a bridge capacitor, an LC resonant circuit, and a coupling capacitor. The first bridge capacitor C610 is connected to the series LC tank. The first end is coupled to the input node of the LC filter 64, and the second end is coupled to the input node of the LC filter 64. The column LC tank includes a capacitor C605 and an inductor L608. The capacitor C610 is connected in parallel with three coupling 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 in parallel with a series LC circuit including an inductor L612 and a capacitor C612 The second bridge capacitor C609 is coupled to the series LC tank. The second bridge capacitor has a first end connected to the first LC resonant circuit and a second end connected to the first LC resonant circuit. The second LC coupling capacitor C609 is connected in parallel to the two coupling capacitors C606 and C607. The first resonant circuit is an LC shunt resonant circuit. As shown in the figure, the second LC resonant circuit is an inductor A shunt inductor L610 in parallel with a series LC circuit including a capacitor C611 Including 609.

[0110] The first coupling capacitor C608 is connected to the input of the filter. A node coupled to the first LC resonant circuit and the second coupling capacitor C607 The second coupling capacitor C607 is connected to the first coupling capacitor C608 and the third coupling capacitor The second coupling capacitor C607 is also coupled in series with the first LC resonator. A third coupling capacitor C606 is coupled between the circuit and the second LC resonant circuit. The tank and the third coupling capacitor C606 form a second LC resonant circuit and a second coupling capacitor C6 The series LC tank shown is a parallel LC circuit. do.

[0111] FIG. 6B is a graph of the frequency response of the cascaded filter 60 of FIG. 6A. The curve represents the frequency response of the cascaded filter 60 of FIG. 6A. The stepped line represents the design specification. The curves in Figure 6B represent the cascaded filters of Figure 6A. The frequency response of the 60 meets the design specifications except for 9 GHz. The filter response has two nulls introduced by shunt acoustic resonators A61 and A62. The frequency response has a relatively sharp roll-off at both edges of the passband. 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 frequency response shown. Therefore, the cascaded filter 60 of FIG. 6A has a bandwidth of at least 1 GHz. In some other embodiments, the inelastic LC filter may have a cascade connection. The cascaded filter with the hybrid elastic LC filter is approximately 3.3 GHz. Elastic resonance, such as a bandwidth of about 4.4 GHz to 5 GHz. The filter may have a bandwidth that is significantly wider than that determined by the filter coupling coefficient.

[0112] The cascaded filter 60 of FIG. 6A is a hybrid elastic LC filter cascaded The principles and advantages described herein can be applied to various Other filter topologies can be implemented. Some examples of filter topologies are These filters can be used for 5G applications, for example. These filters consist of elastic resonators such as FBARs and inductors and capacitors. The inductors and capacitors may be mounted on one or more IPDs, one or more surface mount An inductor, one or more surface mount capacitors, and one or more inductive trays on the package substrate The example filters of FIGS. 7-10 may include: Filters for various applications and design specifications are shown. Features of these filters Any suitable combination of these may be used together with each other and / or with any other ingredients described herein. It can be implemented according to the principles and advantages.

[0113] FIG. 7 is a schematic diagram of a cascaded filter 70 according to another embodiment. The LC filter 70 is a hybrid elastic LC filter cascaded with an LC filter 74. The hybrid elastic LC filter 72 includes a hybrid elastic LC filter. The LC filter 74 is an example of the LC filter 14. The cascaded filter 70 may be, for example, a receive filter. has a passband of 3.4GHz to 3.7GHz for a given application. obtain.

[0114] The hybrid elastic LC filter 72 includes elastic resonators A71, A72, A73, and A74. A75 and A76, capacitors C701, C702 and C703, and inductor L7 01, L702, L703, L704, L705, L706, L707, L708 and L 709. The acoustic resonators A71 to A76 may be BAW resonators. Capacitor C70 Inductors L701 to L709 may be SMT capacitors. It may include a combination of an inductor and a conductive trace on a package substrate.

[0115] The illustrated LC filter 74 includes capacitors C704 and C705 and inductor L7 In certain embodiments, the LC filter 74 includes a The IPD can be implemented with capacitors and inductors. In this embodiment, the LC filter 74 is implemented by SMT capacitors and inductors on the IPD die. This can be implemented as follows.

[0116] FIG. 8 is a schematic diagram of a cascaded filter 80 according to another embodiment. The LC filter 80 is a hybrid elastic LC filter cascaded with an LC filter 84. The hybrid elastic LC filter 82 includes a hybrid elastic LC filter. LC filter 84 is an example of LC filter 14. In this embodiment, the cascaded filter 80 provides a passband from about 3.3 GHz to 4.2 GHz. According to another embodiment, the filter may be a cascaded filter. The filter may have a passband of 3.4 GHz to 3.7 GHz. 0 may be, for example, a receive filter.

[0117] The hybrid elastic LC filter 82 comprises elastic resonators A81, A82, A83, A84 and and A85, capacitors C801 and C802, and inductors L801, L802, L The acoustic resonators A81 to A85 are BAW resonators. Capacitors C801 and C802 may be SMT capacitors. Inductors L801 to L805 are SMT inductors and conductive traces on the package substrate. The combination of inductors L802 and L803 and elastic resonators A81, A82 and The hybrid resonator including A83 and A84 is the hybrid resonator described with reference to FIGS. 11A and 11B. It can function similarly to a hybrid resonator. The hybrid ladder structure including the bottom C802 and the elastic resonators A81 to A85 is shown in FIG. The hybrid ladder structure can function similarly to that described with reference to the above.

[0118] The illustrated LC filter 84 includes capacitors C803, C804, C805, C806 and C807 and inductors L806, L807, L808 and L809. The Router 84 can be used to measure one or more IPDs, one or more SMT components, and one or more The conductive traces may include a conductive material, a conductive material, or any suitable combination thereof.

[0119] FIG. 9 is a schematic diagram of a cascaded filter 90 according to another embodiment. The LC filter 90 is a hybrid elastic LC filter cascaded with an LC filter 94. The hybrid elastic LC filter 92 includes a hybrid elastic LC filter. The LC filter 94 is an example of the LC filter 14. In an embodiment, the cascaded filter 90 is coupled between the elastic resonator and ground. may include surface-mount passive components other than shunt inductors. Such shunt inductors can be printed traces on the package substrate. Thus, in such an embodiment, the cascaded filter 90 is an integrated passive device. The cascaded filter 90 does not include an antenna (IPD). The cascade filter may be a receive filter coupled between the low noise amplifier and the low noise switch. The cascaded filter 90 can improve insertion loss compared to previous designs. The node connection filter 90 may be, for example, a receive filter.

[0120] The hybrid elastic LC filter 92 comprises elastic resonators A91, A92 and A93, a capacitor C901, C902, C903 and C904, and inductors L901 and L902 , L903 and L904. The acoustic resonators A91 to A93 may be BAW resonators. Capacitors C901 to C904 may be SMT capacitors. Inductors L901 to L 904 may include a combination of an SMT inductor and a conductive trace on a package substrate. do.

[0121] The illustrated LC filter 94 includes capacitors C903, C904, and C905, and an inductor The LC filter 94 includes one or more an IPD, one or more SMT components, one or more conductive traces on a substrate, or In one embodiment, the LC filter 94 is , consisting of SMT inductors and capacitors.

[0122] FIG. 10 is a schematic diagram of a cascaded filter according to another embodiment. The connection filter 100 comprises a hybrid elastic L filter cascaded with an LC filter 104. The hybrid elastic LC filter 102 includes a hybrid elastic L The LC filter 104 is an example of the LC filter 14. In certain embodiments, the cascaded filter 100 is an IPD, a surface mounted passive component. This may include components, inductive traces on the laminate, and FBARs. The inverter 100 is coupled on a given side between the antenna switch and the low noise amplifier. The cascaded filter 100 can be a receive filter. The cascaded filter may be a bandpass filter having a passband of 4.2 GHz. In certain embodiments, the filter 100 is a receive filter.

[0123] The hybrid elastic LC filter 102 includes elastic resonators A101, A102, and A103. , capacitors C1001 and C1002, and inductors L1001, L1002, L The elastic resonators A91 to A93 include: The capacitors C1001 and C1002 may be SMT capacitors and The inductors L1001 to L1006 may include one or more SMT inductor, one or more IPD inductors, one or more conductive layers on the package substrate In one embodiment, the inclusion of Inductors L1001 to L1006 are composed of at least an SMT inductor and at least one The IPD includes an inductor and at least one conductive trace on a package substrate.

[0124] A hybrid resonance including inductors L1002 and L1003 and an elastic resonator A102 The resonator functions similarly to the hybrid resonator described with reference to Figures 11A and 11B. A hybrid circuit including inductors L1005 and L1006 and an elastic resonator A103 can be formed. The lid resonator may be similar to the hybrid resonator described with reference to FIGS. 11A and 11B. The inductors L802 to L806, the capacitor C1002, and the spring The hybrid ladder structure including the resonators A102-A103 is described with reference to FIG. The hybrid ladder structure can function similarly to the hybrid ladder structure.

[0125] The illustrated LC filter 104 includes capacitors C1003, C1004, C1005, and C1 006 and C1007, and inductors L1007, L1008, L1009 and L101 0. The LC filter 104 includes one or more IPDs, one or more SMT components, The conductive traces may include a conductive layer, one or more conductive traces on a substrate, or any suitable combination thereof. In one embodiment, the LC filter 104 includes at least an SMT component and At least one IPD and at least one conductive trace on a package substrate. nothing.

[0126] The hybrid elastic LC filters described herein are made up of acoustic wave resonators and inelastic passive capacitors. The present invention may include various hybrid resonators including the above-described components. , and are described with reference to Figures 11A-12. These hybrid resonators are The present invention may be implemented in connection with any suitable embodiment.

[0127] FIG. 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 115. 16. The elastic resonators 112 are arranged as shunt resonators. The elastic resonator 112 may be, for example, an FBAR. The elastic resonator 112 may be any other suitable elastic resonator. The elastic resonator 112 is connected in parallel to the first inductor 114. , and is connected in series with the second inductor 116. The inductors 114 and 116 and the elastic resonator 112 The combination of this with a pair of notches relatively close to the passband can be achieved without significant impact on transmission loss. The notch can occur from approximately 1.1 GHz to 8.5 GHz from the lower or upper limit of the passband. It can be in the Hz range.

[0128] FIG. 11B is a graph of the frequency response of the hybrid resonator 110 of FIG. 11A. The frequency response shows the pair of notches described with reference to FIG. It has been shown that the simulated hybrid resonator 110 does not introduce significant transmission loss. vinegar.

[0129] FIG. 12 is a schematic diagram of a hybrid resonator 120 according to another embodiment. The ladder resonator 120 has a hybrid ladder structure. The first series shunt circuit includes a series shunt circuit, an LC tank, and a second series shunt circuit. includes a first elastic resonator 122 and a first inductor 123. The second series shunt circuit includes: The LC tank includes a second elastic resonator 124 and a second inductor 125. The hybrid resonator 120 includes a capacitor 126 in parallel with an elastic node 127. This is because the LC tank is included between the resonators and the hybrid resonator 1 This can provide both a far-end notch in the frequency response of the filter, including 20. The hybrid resonator 120 includes a hybrid ladder structure. , for example, can be used for low-pass and / or high-pass filtering. The hybrid resonator 120 is a hybrid ladder topology.

[0130] Parallel hybrid elastic passive filters.

[0131] With the advancement of 5G wireless communication technology, new carrier aggregation (CA) specifications are being introduced. It is possible to specify strict intermodulation distortion (IMD) rejection for such a new CA. CA can include more multiplexing filters than previous CAs. CA IMD Rejection To give the compliant filter sharp rejection at frequencies near the passband, an elastic support filter is used. The filter has relatively low loss, a wide passband, and relatively low noise at frequencies near the passband. By using hybrid resonators such as hybrid elastic LC resonators with extremely sharp blocking characteristics, Elastic resonators can be designed to generate harmonics when relatively high power is applied. The harmonics generated by surface acoustic wave devices or bulk acoustic wave devices are It may leak into wavebands and / or have emissions that exceed standard specifications.

[0132] Providing CA-compliant multiplexing filters with sharp rejection at edgeband frequencies. To achieve this, hybrid elastic LC wideband filters can be included in some or all of the passband arms. Reduce and / or minimize the use of filter elastic dies and passive components. To achieve this, hybrid elastic LC filters, integrated passive device (IPD) filters, or passive Either a variable low-pass (LP) or high-pass (HP) filter with two or more passbands In addition, the frequency band of a band pass filter (BPF) (e.g. To give the higher band arm (at 2.4GHz for Wi-Fi) specific sharp rejection , a parallel hybrid elastic LC filter. The series hybrid elastic LC filter can be cascaded to other filters such as passive inelastic filters. It can be connected to a USB port.

[0133] Hybrid elastic LC filters having parallel hybrid elastic LC sub-filters are disclosed In one embodiment, a parallel elastic LC filter is used to filter the radio frequency signal. a first sub-filter configured to filter a second sub-filter coupled in parallel to the first sub-filter; The first sub-filter includes a first elastic resonator and a first LC component. The second sub-filter includes a second elastic resonator and a second LC component. A hybrid elastic LC filter contains multiple filters coupled together at a common node The parallel hybrid elastic filter can be implemented in a multiplexer. Any suitable principles and advantages of a flexible LC circuit may be implemented. Therefore, the parallel hybrid elastic LC filter includes the hybrid resonator 110 of FIG. 11A. As another example, a parallel hybrid elastic LC filter can be obtained by using the hybrid It may include a ladder structure 120.

[0134] The parallel hybrid elastic LC filter may be a band pass filter. The elastic LC filter may be a band-stop filter. The parallel hybrid elastic LC filter is , may be present in the high-band path. Such filters reduce and / or minimize design complexity. In addition, such filters can be , with few passive components and / or in a small physical area The parallel hybrid passive filters described herein can be used to Design specifications for high-bandwidth paths, such as desirable rejection in the Wi-Fi frequency band This allows the transmit and receive paths to simultaneously share a high bandwidth path. can be done.

[0135] Parallel hybrid elastic LC filters have a relatively wide bandwidth and are suitable for specific frequency bands. The parallel hybrid elastic LC filter can provide strong rejection in for different frequency bands arranged in parallel to provide strong rejection of other frequency bands. One example is a hybrid filter with parallel band 40 and band 41. A hybrid elastic LC bandpass filter is used to pass Band 40 and Band 41 signals. It provides wide bandwidth for the 2.4GHz Wi-Fi frequency band while providing strong blocking. In some embodiments, a passive inelastic filter may be used in the high-band path. A parallel hybrid elastic LC filter is used to achieve both wide bandwidth and sharp rejection. According to certain embodiments, a parallel hybrid elastic LC flow A triplexer is achieved by using a filter and two other filters coupled to a common node. For example, for low band (LB) / medium band (MB) / high band (HB) The triplexer is a hybrid that contains a Band 40 filter in parallel with a Band 41 filter. LB filter, MB filter and HB filter implemented by lid elastic LC filter Such a triplexer effectively provides a system-level carrier aggregation It can serve as a quadplexer, which is advantageous for ligation applications. do.

[0136] FIG. 13 is a schematic block diagram of a hybrid parallel bandpass filter 130 according to one embodiment. The parallel hybrid bandpass filter 130 is a block diagram of a first hybrid bandpass filter. The first bandpass filter 132 and the second bandpass filter 134. The second bandpass filter 132 and the second bandpass filter 134 are used to filter the radio frequency signal. The first bandpass filter 132 is arranged in a first elastic resonator and a first inelastic passive component. The first non-elastic passive component is a hybrid elastic passive filter. The second band-pass filter 134 may include at least an inductor and a capacitor. a hybrid elastic-passive filter including two elastic resonators and a second inelastic passive component; The second non-elastic passive component may include at least an inductor and a capacitor. The first band-pass filter 132 has a first pass band, and the second band-pass filter 13 4 has a second passband. By including two filters in parallel with each other, the parallel filter The bandwidth of the parallel filter is increased beyond that of each of the individual filters in the parallel filter. The hybrid parallel bandpass filter 130 can be configured to have a first passband and a second passband. The frequency response of the hybrid parallel bandpass filter 130 is may have a notch in the passband between the first passband and the second passband. The notch may be, for example, For example, a parallel hybrid bandpass filter may exist for the 2.4 GHz Wi-Fi band. The symbol 135 for filter 130 is also shown in FIG.

[0137] Some embodiments refer to a parallel hybrid elastic LC filter for a high-bandwidth filter. Despite what has been described, none of the pertinent principles and advantages described herein may be used interchangeably. A bandpass filter, a low-bandpass filter, or any other filter that may benefit from the features described herein. The present invention can be applied to any other filter.

[0138] The parallel hybrid elastic LC filters described herein can be used in power amplifier modules, die a versatile receiver module, or any other suitable radio frequency front-end module can be implemented in

[0139] The parallel hybrid elastic passive filters described herein are coupled together at a common node. Such a multiplexer can be implemented as a multiplexer containing multiple filters. The multiplexer may include a diplexer, a triplexer, a quadplexer, etc. In the sar, any suitable number of filters can be coupled together at a common node. Multiple filters and multi-throw radio frequency switches are used to implement switchplexing functions. The parallel hybrid elastic passive filters can be connected together at a common node via Some examples of multiplexers including are described with reference to FIGS. 14-16. The arrangement of FIG. 13 An example of a multiplexer including the parallel hybrid elastic filter 130 of FIG. 13 can be implemented according to any suitable principles and advantages of the parallel hybrid elastic filter 130.

[0140] FIG. 14 is a schematic block diagram of a diplexer 140 including a hybrid parallel bandpass filter 130 according to one embodiment. The diplexer 140 includes the hybrid parallel band pass filter 130 and a second filter 144. As shown, the parallel hybrid elastic filter 130 may be a high-band filter, and the second filter 144 may be an intermediate-band filter . The parallel hybrid elastic filter 130 and the second filter 144 can be coupled together to a common node such as the antenna node ANT shown. The second filter 144 may be a hybrid elastic passive filter, a non-elastic LC filter, or an elastic wave filter . The second filter 144 may be a bandstop filter. The stop band of the bandstop filter may include part or all of the first pass band of the first bandpass filter 132 and / or the second pass band of the second bandpass filter 134. <lesscode> <lesscode> <lesscode>

[0141] FIG. 15 is a schematic block diagram of a triplexer 150 including a hybrid parallel bandpass filter 130 according to one embodiment. The triplexer 150 includes the hybrid parallel bandpass filter 130, a second filter 154, and a third filter 156. As shown, the parallel hybrid elastic filter 130 may be a high-band filter, the second filter 154 may be an intermediate-band filter, and the third filter 156 may be a low-band filter . The parallel hybrid elastic filter 130 and the second filter 156 are shown in the antenna The second filter 154 may be coupled together at a common node such as node ANT. , high-pass and band-stop filters. The band may be a first passband of the first bandpass filter 132 and / or a second passband of the second bandpass filter The second filter 154 may include some or all of the second passband of the second filter 134. The third filter may be an elastic LC filter, an inelastic LC filter or an elastic wave filter. The third filter 156 may be a hybrid elastic LC filter. The third filter 156 may be a first filter, a non-elastic LC filter, or an acoustic wave filter. The passbands of the hybrid parallel bandpass filter 130 and the hybrid parallel bandpass filter 154 are It can pass circulating frequencies.

[0142] FIG. 16 illustrates a shared high-pass filter 162 and a hybrid parallel bandpass filter according to one embodiment. 1 is a schematic block diagram of a triplexer 160 including an over-filter 130. The triplexer 160 is similar to the triplexer 150 of FIG. 15, but includes a shared high-pass filter 1. 62 is connected to both the hybrid parallel bandpass filter 130 and the second filter 144. The difference is that the two filters are cascaded and the second filter 144 is a band-stop filter. Therefore, the shared high-pass filter 162 is connected to the parallel hybrid elastic filter 130. The shared high-pass filter 162 is also coupled between the second filter 144 and the common node. and a common node. The shared high-pass filter 162 is, for example, an LC filter or a hybrid elastic LC filter. In one embodiment, a shared high pass filter The shared high-pass filter 162 may be an inelastic passive filter. together with the parallel hybrid elastic filter 130 provide a relatively wide bandwidth and high A relatively sharp rejection for the bandpass path can be achieved.

[0143] FIG. 17 illustrates a shared high-pass filter 162 and a hybrid band-pass filter according to one embodiment. 1 is a schematic block diagram of a quadplexer 170 including a filter. 70 is similar to the triplexer 160 of FIG. 16, but includes a first bandpass filter 132 and a second bandpass filter 133. The difference is that separate terminals are provided for the first band-pass filter 134 and the second band-pass filter 135. This allows for flexibility in terms of carrier aggregation options. In the quadplexer 170, the first bandpass filter 132 and the second bandpass filter The filter 134 receives signals in 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. The first band-pass filter 132 and the second band-pass filter 134 have different passbands. 17. T). The first band-pass filter 132 and / or the second band-pass filter 134 may include an elastic resonator and an inelastic passive component. , may include inductors and capacitors external to the die containing the acoustic wave resonator. The dynamic component is an inductor connected in parallel to one of the plurality of elastic resonators. The first band-pass filter 132 and / or the second band-pass filter 134 may include The hybrid elastic passive filter may include any suitable combination of the features of the hybrid elastic passive filter disclosed herein. In certain embodiments, the first bandpass filter 132 and the second bandpass filter 1 34, each with a passband in the frequency range of 2 GHz to 3 GHz. It has a passband within the frequency range of 2 GHz to 5 GHz.

[0145] The band-stop filters 144 are coupled to a common node via a shared high-pass filter 162. The band-stop filter 144 is a filter that is connected to the first band-pass filter 132 and the second band-pass filter 133. The low pass filter 156 is connected to the common node and has a stop band that includes the pass band of the low pass filter 134. are combined.

[0146] The quadplexer 170 provides a given capacitance reduction compared to the triplexer 160 of FIG. This can improve rear aggregation performance. For example, The wireless communication device provides a carrier address including a first carrier and a second carrier at a common node. In this example, the first carrier is Within the passband of the first bandpass filter 132 and outside the passband of the second bandpass filter 134 The second carrier is passed through the first band pass filter 132 and the second band pass filter 134. The first carrier is passed through the second bandpass filter 134, which is outside both of the passbands of the first carrier and the second bandpass filter 134. Therefore, the lack of filtering reduces the insertion loss in the quadplexer 170. The cost may be less than that of the triplexer 160.

[0147] FIG. 18 illustrates a tripod including a hybrid parallel bandpass filter 182 according to one embodiment. 18 is a schematic diagram of a lexer 180. In FIG. As shown, the triplexer 180 has Hybrid parallel bandpass filter 182, hybrid elastic LC filter 184, inelastic It 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 0. The hybrid parallel bandpass filter 182 is an example of the triplexer 180. The hybrid parallel bandpass filter 182 is a high-pass filter for acoustic wave resonance. 1 is an example filter topology of a filter and an inductor. As shown, a high-bandwidth signal is Hybrid parallel bandpass filter 182 via inductors L1801 and L1802 The hybrid parallel bandpass filter 182 is composed of elastic resonators A1801, A1802, and A1803. 1802, A1803, A1804, A1805, A1806, A1807, A1808 , A1809 and A1810, and inductors L1803, L1804 and L1805 The hybrid parallel bandpass filter 182 also includes a first sub-filter including an elastic Resonators A1811, A1812, A1813, A1814, A1815, A1816, A 1817, A1818, A1819 and A1820, and inductors L1806 and L The hybrid parallel bandpass circuit 182 also includes a second sub-filter including 1807. 8 includes multiple parasitic capacitances not shown in the figure. However, these parasitic capacitances are This is a part of the LC circuit of the bandpass filter 182. The inductor 82 may be one or more SMT inductors and / or one or more conductive substrates. The elastic resonators of the hybrid parallel bandpass filter 182 may include one or more It may include one or more BAW resonators, such as the FBARs above.

[0149] The hybrid elastic LC filter 184 includes an elastic resonator, an inductor, and a capacitor. As shown, the hybrid elastic LC filter 184 includes elastic resonators A1821, A1822, and A1823. 1822, A1823, A1824, A1825, A1826, A1827, A1828 and A1829, inductors L1808, L1809, L1810, L1811 and L1 812, and capacitors C1801 and C1802. The filter 184 may be any suitable hybrid elastic LC filter principle and method disclosed herein. The hybrid elastic LC filter 184 can be implemented according to the advantages. This is the mid-band filter in the lexer 180.

[0150] The inelastic LC filter 186 is the low pass filter in the triplexer 180 . The inelastic LC filter 186 may be a low-pass filter. 24A and / or 24B. Therefore, it can be implemented.

[0151] The harmonic notch filter 188 is configured to filter out the radio frequency components. The harmonic notch filter 188 can provide notches at the harmonics of the signal. For example, the low pass filter of FIG. 24D can be implemented according to any suitable principles and advantages. The harmonic notch filter 188 shown includes capacitors C1803, C1804, and C1805. Includes C1805 and C1806, and inductors L1813 and L1814. The filter 188 can provide notches at two harmonic frequencies.

[0152] Figure 19A shows the simulation results of the triplexer 180 of Figure 18. indicates the passbands of the filters 182, 184 and 186 of the triplexer 180. The pass filter 186 has a pass band indicated by the solid curve. has a passband indicated by the first dashed curve. Parallel hybrid elastic bandpass filter 182 has passbands shown by different dashed curves. The filter 182 has a notch in the middle of its passband. Two different frequency bands that the lid elastic bandpass filter 182 is arranged to pass The simulation results show that the tripod is Improved isolation across mid- and high-band filters in lexer 180 A simulation of the triplexer 180 of FIG. 18 with a 9:1 load pull shows that The option has a reasonable insertion loss.

[0153] FIG. 19B is a graph showing the simulation results of the triplexer 180 of FIG. 18. These simulation results show that the triplexer 180 , showing improvements in both insertion loss and isolation compared to previous designs.

[0154] Some embodiments of the parallel hybrid elastic filters described herein may be bandpass filters. Regardless of the above, any suitable parallel hybrid elastic filter may be used as described herein. The principles and advantages of the parallel hybrid elastic band can be applied to band-stop filters. The band-rejection filter may be implemented as a stand-alone filter or in a multiplexer. Several examples of parallel hybrid elastic bandstop filters are shown in Figs. It will be explained.

[0155] FIG. 20 is a schematic block diagram of a hybrid parallel bandstop filter 200 according to an embodiment. The hybrid parallel bandstop filter 200 is a block diagram of the passband of another filter. Using LC notch filters in close proximity can significantly degrade in-band loss. A relatively broad band rejection can be achieved without

[0156] The parallel hybrid bandstop filter 200 comprises first and second bandstop filters arranged in parallel with each other. The first band-stop filter 202 and the second band-stop filter 204 are included. 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. The first non-elastic passive component is a hybrid elastic passive filter comprising at least The second bandstop filter 204 may include a second acoustic resonator. and a second non-elastic passive component. The resilient passive components may include at least an inductor and a capacitor. The stop filter 202 has a first stop band and the second band stop filter 204 has a second stop band. By including two filters in parallel with each other, a parallel hybrid band-stop filter is realized. The stop band of the stop filter 200 is determined by the individual filters 202 or This is an increase compared to 204 respectively.

[0157] The hybrid parallel bandstop filter 200 has a first stopband and a second stopband. The frequency response of the hybrid parallel bandstop filter 200 has a first stop band. The parallel hybrid bandpass filter may have a notch in the stopband between the first stopband and the second stopband. The symbol 305 for the filter 205 is also shown in FIG.

[0158] FIG. 21 is a schematic diagram of a hybrid parallel bandstop filter 210 according to one embodiment. The hybrid parallel bandstop filter 210 is the same as the hybrid parallel bandstop filter 210 shown in FIG. 2 is an example of a hybrid parallel bandstop filter 210. The hybrid parallel bandstop filter 210 is an example of a filter 200. 1 shows an example filter topology of a hybrid parallel band-stop filter. The capacitor 210 includes a number of parasitic capacitances that are not shown in FIG. 2 is a part of the LC circuit of the hybrid parallel band-stop filter 210.

[0159] As shown, a radio frequency signal is coupled to the harmonics via inductors L2101 and L2102. The hybrid parallel bandstop filter 210 is provided. The resonator 210 includes elastic resonators 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 sub-filter 212 including , the second subfield including the elastic resonators A216, A217, A218, A219 and A220; filter 214, inductors L2108, L2109 and L2110, and capacitor C2 The inductors of the hybrid parallel bandstop filter 210 are also included. The hybrid may include one or more conductive traces on the MT inductor and / or the substrate. The elastic resonators of the parallel bandstop filter 210 may be one or more B It may include an AW resonator.

[0160] FIG. 22 is a graph of the frequency response of the hybrid parallel bandstop filter 210 of FIG. The frequency response in FIG. 22 is obtained by the parallel hybrid elastic bandstop filter 210. This shows that a relatively wide stopband can be achieved.

[0161] Hybrid Elastic LC Filters with Harmonic Suppression

[0162] With the advancement of 5G wireless communication technology, new carrier aggregation (CA) is being introduced. A CA IMD rejection compliant filter may be specified for a specific filter. To give the filter sharp rejection at frequencies near the passband, an elastic support filter is used. It provides relatively low loss, a wide passband, and relatively sharp rejection at frequencies near the passband. Hybrid resonators, such as hybrid elastic LC resonators with thermal resistance, are designed. The elastic resonator can generate harmonics when relatively high power is applied. The harmonics generated by the surface acoustic device or bulk acoustic device leak into the high frequency band. and / or may have emissions that exceed specifications for the standard.

[0163] Since the elastic resonator filter can generate harmonics at relatively high power, the hybrid elastic L To achieve both C filter rejection and suppress the harmonics generated by the resonator, To achieve this, a passive inelastic filter can be cascaded with a hybrid elastic LC filter. Therefore, it is possible to achieve a relatively wide bandwidth and a relatively high To achieve high rejection, inelastic LC filters such as integrated passive device (IPD) filters are used. The filter can be cascaded into a hybrid elastic LC filter.

[0164] The hybrid elastic LC filters and / or multiplexers described herein may include one or more The harmonic suppression filter may include a harmonic suppression filter to suppress harmonic frequencies above , low-pass filters and / or notch filters. The disclosed harmonic suppression filters For example, the harmonic suppression filter may be an IPD filter. The harmonic suppression filters are cascaded with the hybrid elastic LC filters. The cascaded filter can be coupled between the power amplifier and the antenna port. For example, the harmonic suppression filter is a hybrid elastic LC filter connected to the antenna port. It can be joined in between.

[0165] Aspects of the present disclosure relate to hybrid elastic LC filters with harmonic suppression. The hybrid elastic LC is a hybrid configured to filter radio frequency signals. a passive / resilient filter configured to suppress harmonics of the radio frequency signal; Hybrid passive / elastic filters include multiple elastic resonators and a single Inelastic LC filters are hybrid passive / elastic filters. It is cascaded to the filter.

[0166] The inelastic LC filter may be a notch filter. The frequency response of the notch filter is The frequency response of the notch filter is , may have a notch corresponding to the third harmonic of the radio frequency signal. The inelastic LC filter may be a band pass filter. The device may include a vice.

[0167] The hybrid passive / elastic filter may comprise any of the hybrid resonators disclosed herein. The implementation may be according to any suitable principles and advantages of, for example, a hybrid passive The elastic filter may be a hybrid resonator as shown in FIG. 11A and / or a hybrid resonator as shown in FIG. The elastic resonator may include a bulk elastic resonator.

[0168] Hybrid elastic LC filters with harmonic suppression offer a wide range of performance benefits, such as stand-alone filters. In an application, a plurality of filters arranged to filter radio frequency signals Implemented in multiplexers including filters and wireless communication devices such as mobile phones. The parallel hybrid elastic LC flow with harmonic suppression described herein can be implemented. The filter may be a power amplifier module, a diversity receive module, or any other suitable It can be implemented in a radio frequency front-end module.

[0169] FIG. 23A is a schematic block diagram of a radio frequency system including a filter 230. The filter 230 is a high pass filter cascaded with a low pass filter 234 according to one embodiment. The radio frequency system also includes a power amplifier 23 1 and an antenna 234. As shown, the hybrid elastic LC filter 232 includes: It is possible to receive a radio frequency signal from the power amplifier 231. The radio frequency signal may have a relatively high power. The two elastic resonators may generate one or more harmonics. Such harmonics can be filtered out. , resulting in a hybrid elastic LC filter with harmonic suppression. The filter 234 is connected between the output of the hybrid elastic LC filter 232 and the antenna 234. The antenna 234 is coupled to the radio frequency signal provided by the power amplifier 231. A filtered version can be sent.

[0170] The hybrid elastic LC filter 232 uses elastic resonators and non-elastic passive components. The elastic resonator may include one or more bulk acoustic wave resonators, such as FBARs, one or more SAW resonators, one or more boundary wave resonators, one or more Lamb wave resonators, or any of these The hybrid elastic LC filter 232 may include an appropriate combination of one or more The circuit may include an LC circuit including an inductor and one or more capacitors. The one or more capacitors may include: One or more IPD capacitors, one or more surface mount capacitors, one or more parasitic capacitors The one or more inductors may include one or more one or more IPD inductors, one or more surface-mount conductors, conductive traces on the package substrate, and The present invention may include one or more inductors implemented as a The hybrid elastic LC filter 232 is a hybrid elastic LC filter as disclosed herein. The filter may be implemented according to any suitable principles and advantages. The hybrid elastic LC filter 232 includes the hybrid resonator 110 of FIG. 11A. The hybrid elastic LC filter 232 may be used in certain applications as shown in FIG. The ladder structure 120 may include two hybrid ladder structures.

[0171] In a given application, the hybrid elastic LC filter 232 It may have a passband of 100 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, includes: (a) a carrier amplifier; (b) aggregation transmission blockers, and (c) continuous wave out-of-band blockers. It is possible.

[0172] The low-pass filter 234 passes signals below the cutoff frequency and Therefore, the cutoff frequency of the low-pass filter 234 can be reduced. The off-off frequency is set to pass the radio frequency signal from the hybrid elastic LC filter 232. and may be selected to suppress one or more harmonics of the radio frequency signal. For example, the cutoff frequency is a frequency above the frequency of the radio frequency signal and below the frequency of the radio frequency signal. In certain embodiments, the hybrid The elastic LC filter 232 is a band-pass filter, and the cutoff frequency of the low-pass filter 234 is The frequency is above the passband of the bandpass filter and Passes below the second harmonic of the radio frequency signal.

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

[0174] FIG. 23B is a schematic block diagram of a radio frequency system including a filter 235. The filter 235 is cascaded to a harmonic notch filter 236 according to one embodiment. The radio frequency system of FIG. 23B includes a hybrid elastic LC filter 232. 23A, except that the filter 230 in FIG. 23A is replaced by the filter 230 in FIG. 23B. 23A is replaced by filter 234. 23A. The filter 230 is similar to the filter 230 in FIG. 23A, but replaces the low-pass filter 234 from the filter 230 in FIG. 1 except that a harmonic notch filter 236 is included instead. The filter 236 is connected between the output of the hybrid elastic LC filter 232 and the antenna 234. is connected in between.

[0175] The harmonic notch filter 236 is configured to filter the radio frequency components from the hybrid elastic LC filter 232. The frequency response of the signal is adjusted to filter out one or more corresponding harmonics of the signal. The hybrid elastic LC filter 232 may have one or more notches. The second harmonic generated is the most prominent harmonic. Therefore, the 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 at one or more other harmonics. In certain embodiments, the hybrid elastic LC filter 232 is cascaded The harmonic notch filter may have two or more notches at any suitable harmonics. A harmonic notch filter may have notches at the second and third harmonics, such as The hybrid elastic LC filter 232 provides a The harmonic notch filter 236 is a hybrid elastic LC filter 232. This makes it possible to suppress the harmonics generated by the elastic resonator.

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

[0177] 24A is a schematic diagram of an example low-pass filter 240. 40 is an example of the low-pass filter 234 in FIG. 23A. The low-pass filter 240 is Series inputs arranged to filter out frequencies above the cutoff frequency The inductance of the series inductor L1 is and the capacitance of shunt capacitor C1 together form low pass filter 240 The cutoff frequency at

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

[0179] FIG. 24C is a schematic diagram of an example harmonic notch filter 243. Filter 243 is an example of low-pass filter 236 in FIG. 23B. The inductor 243 includes a shunt series LC circuit. The capacitor C1 can set the frequency of the notch. The different impedances of capacitor C1 together create notches at different frequencies. The notches may be provided by any suitable harmonic frequency. For example, the notch may be the second harmonic of the radio frequency signal applied to the harmonic notch filter 243. Alternatively, the notch can be provided to the harmonic notch filter 243. The frequency can be set to the third harmonic of the radio frequency signal being received.

[0180] FIG. 24D is a schematic diagram of an example harmonic notch filter 244. Filter 244 is an example of low pass filter 236 in FIG. 23B. The capacitor 244 includes two shunt series LC circuits. The first shunt series LC circuit is a capacitor The second shunt series LC circuit includes a capacitor C2 and an inductor Ls1. and inductor Ls2. The two shunt series LC circuits are Therefore, the harmonic frequencies shown can be adjusted to provide notches at different harmonics such as The notch filter 244 can provide notches at two different harmonics. The impedance of the shunt series LC can set the corresponding frequency of each notch. Other harmonic notch filters can provide notches at three or more harmonics.

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

[0182] The hybrid elastic LC filter with harmonic suppression described herein has a common node It can be implemented in a multiplexer that includes multiple radio frequency filters coupled together. Examples of multiplexers include diplexers, triplexers, and quadplexers. In a multiplexer, any suitable number of filters may be connected together at a common node. Multiple filters can be combined to implement switchplexing functions. The inputs can be coupled together to a common node via a radio frequency switch. Some example multiplexers including hybrid elastic LC filters with In these example embodiments, the multiplexer is Although the present invention is directed to a multi-layered optical fiber, the principles and advantages associated with such an embodiment may be applied to any other suitable optical fiber. Other suitable multiplexers include die-cast multiplexers. These include quadplexers, quadplexers, etc.

[0183] FIG. 25A is a schematic block diagram of a triplexer 250. 0 is a hybrid cascaded low pass filter 234 according to one embodiment. The triplexer 250 includes the filter 230 of FIG. 23A, the high-performance LC filter 232. The filter 230 includes a bandpass filter 252 and a low-bandpass filter 254. The filter 252 and the low pass filter 254 are coupled together at a common node. The node is an antenna node in the triplexer 250. The filter 230 is The high-pass filter 252 is a bandpass filter. The high-band filter 252 may be a high-pass filter or a high-pass filter. The high pass filter 252 may be configured to filter any of the signals described herein. It may be a hybrid elastic LC filter implemented according to any suitable principles and advantages. As one example, the high-band filter may include a parallel hybrid elastic passive filter. In some other embodiments, the high pass filter 252 may be a non-resilient LC circuit element. It may be implemented by any other suitable circuit elements. The low-pass filter 254 may be a low-pass filter or a band-pass filter. The low pass filter 254 is arranged to filter the frequency signal. and a hybrid elastic LC filter implemented according to any suitable principles and advantages. In some other embodiments, the low pass filter 254 may include a non-elastic LC circuit element. The circuitry may be implemented by any other suitable circuit elements such as:

[0184] FIG. 25B is a schematic block diagram of the triplexer 255. 5 is a hybrid cascaded harmonic notch filter 236 according to one embodiment. The triplexer 255 includes a high-elasticity LC filter 232. 250 except that it includes filter 235 instead of filter 230. The filter 235 is a radio frequency filter provided by the hybrid elastic LC filter 232. It includes a harmonic notch filter 236 arranged to suppress harmonics in the signal. The harmonic notch filter 236 may be used in some applications to filter out two or more harmonics. In certain embodiments, the filter of the multiplexer The hybrid elastic LC filter is cascaded with a low-pass and harmonic notch filter. It may include a filter.

[0185] Radio Frequency Module

[0186] The filters disclosed herein can be implemented in a variety of packaged modules. Any suitable principles and advantages of the filters and / or multiplexers disclosed herein may be implemented. Some example packaged modules that can be mounted are disclosed below. The packaged module may include a package that encapsulates the circuit elements shown. A module that includes a frequency component may be referred to as a radio frequency module. The circuit elements can be disposed on a common package substrate. The package substrate can be, for example, 26-28 show exemplary packaged modules according to certain embodiments. 1 is a schematic block diagram of a packaged module according to any suitable combination of features of the packaged module; The package-like modules of the example shown in Figs. Although filters are shown in the module, any such filters must be It can be implemented in a lexer.

[0187] FIG. 26 illustrates a radio frequency module having a transmit path including a filter 262 according to one embodiment. 2 is a schematic diagram of a module 260. The illustrated module 260 includes a filter 262, a power amplifier 263 and a radio frequency switch 264. A radio frequency module including a power amplifier. The power amplifier 263 may be referred to as a power amplifier module. The radio frequency switch 264 may be a multi-throw radio frequency switch. The switch 264 can electrically couple the output of the power amplifier 263 to the filter 262. Filter 262 is a transmit filter arranged to filter the transmit radio frequency signal. The filter 262 may be any suitable combination of the features of the filters disclosed herein. In some other examples, a radio frequency switch may be configured to connect the transmit signal path to the power It can be selectively electrically connected to the input of amplifier 263 .

[0188] FIG. 27 illustrates a radio frequency module having a receive path including a filter 272 according to one embodiment. 2 is a schematic diagram of a module 270. The illustrated module 270 includes a filter 272, a low noise amplifier, and a The filter 272 includes a receive radio frequency amplifier 274 and a radio frequency switch 274. A receive filter arranged to filter the wavenumber signal. It may include any suitable combination of the filter features disclosed herein. 74 amplifies the filtered received radio frequency signal provided by the filter 272 The radio frequency switch 274 can route the output of the low noise amplifier 274 to the receive path. In certain embodiments, the radio frequency switch 276 selectively electrically couples the output of the low noise amplifier 274 to one or more selected receive paths. In such an embodiment, the switches may be multi-throw radio frequency switches arranged to match. , a radio frequency divider (not shown) is connected to a low noise amplifier 274 and a radio frequency switch 276. can be bonded between

[0189] FIG. 28 is a schematic diagram of a radio frequency module 280 including a filter 282 according to one embodiment. The illustrated module 280 includes one or more filters 282, radio frequency switches, and The filter 262 includes a filter 284, a power amplifier 263, and a low noise amplifier 274. 82 may include any suitable combination of filter features disclosed herein. A frequency switch 284 couples one or more filters 282 to the power amplifier 263 and / or the low noise amplifier 264. It may be electrically coupled to an amplifier 274 .

[0190] wireless communication devices

[0191] The filters described herein are used to filter radio frequency signals in wireless communication devices. Examples of wireless communication devices are described with reference to Figures 29 and 30. can be.

[0192] FIG. 29 illustrates an embodiment of a radio frequency front end 292 including a filter 293. 2 is a schematic diagram of a wireless communication device 290. The wireless communication device 290 may be any suitable For example, the wireless communication device 290 may be a wireless communication device such as a smartphone. As shown, the wireless communication device 290 includes an antenna 191, a front end 192, a front end 193, a rear end 194, a rear end 195, a rear end 196, a rear end 197, a rear end 198, a rear end 199, a rear end 191a, a rear end 199b, a rear end 199c, a rear end 199d, a rear end 199e An RF front end 292 including a filter 293, a transceiver 294, a processor 295, a memory The antenna 291 includes an RF front end. The RF signal provided by the terminal 292 can be transmitted. The antenna 291 processes the received RF signal, which may include a carrier aggregation signal. Such an RF signal may be applied to the RF front end 292 for processing purposes. It may include an aggregation signal.

[0193] The RF front end 292 includes one or more power amplifiers, one or more low noise amplifiers, and an RF Switches, receive filters, transmit filters, duplex filters, multiplexers, frequency The RF front end may include a number of multiplexing circuits, or any combination thereof. The band 292 is capable of transmitting and receiving RF signals associated with any suitable communication standard. The filter 293 may be implemented according to any suitable principles and advantages of filters described herein. For example, the filter 293 can be implemented as shown in any one of FIGS. Any suitable combination of the features described above may be implemented. The one or more filters may be implemented according to any suitable principles and advantages disclosed herein. can be done.

[0194] The RF transceiver 294 transmits the RF signal to the RF front end for amplification and / or other processing. The transceiver 294 can also be provided to the RF front end 292. The transceiver 294 can also process RF signals provided by the low noise amplifiers of the processor. 295. The processor 295 may be a baseband processor. 295 may provide any suitable baseband processing functionality for wireless communication device 290. The memory 296 is accessible to the processor 295. The processor may store any suitable data for the wireless communication device 290. Processor 295 also communicates with user interface 297. 297 may be any suitable user interface, such as a display.

[0195] FIG. 30 illustrates a filter 293 in a radio frequency front end 292 according to one embodiment. and a second filter 303 in the diversity receiving module 302. 29. The wireless communication device 300 is a schematic diagram of the wireless communication device 300 of FIG. 290, but the wireless communication device 300 further includes diversity reception functionality. As shown in FIG. 30, the wireless communication device 300 has a diversity amplifier. and a diversity antenna 301 configured to process signals received by the diversity antenna 301. a diversity module 302 including a filter 303 and a radio frequency front end 2 92 and a diversity receiving module 302. The filter 303 may be implemented according to any suitable principles and advantages of the filters described herein. For example, the filter 303 may be any of the filters described with reference to any of FIGS. Any suitable combination of the features described above may be implemented. Two or more filters may be implemented according to any suitable principles and advantages disclosed herein. It is possible.

[0196] Conclusion

[0197] Any of the principles and advantages described herein may be incorporated into the systems, modules, chips, Filter assemblies, filters, wireless communication devices and methods, as well as other suitable systems SYSTEM, MODULE, CHIP, FILTER ASSEMBLY, FILTER, WIRELESS COMMUNICATION DEVICE AND METHOD - Patent application The elements and operations of the various embodiments described above may also be applied to further implementations. Any of the principles and advantages described herein can be combined to provide A range of about 30 kHz to 300 GHz, such as a range of about 450 MHz to 8.5 GHz Implemented in conjunction with a radio frequency circuit configured to process signals having a frequency in It is possible.

[0198] Aspects of the present disclosure can be implemented in a variety of electronic devices. Examples include consumer electronic products, chips and / or packaged radio frequency modules. Consumer electronics components, electronic test equipment, uplink wireless communication devices, personal electronics Examples of consumer electronic products include, but are not limited to, rear network communication devices. The device may be a mobile phone such as a smartphone, a smart watch, or an accessory such as an earpiece. wearable computing devices, telephones, televisions, computer monitors, computers, routers, modems, handheld computers, laptop computers, tablets computer, personal digital assistant (PDA), and automotive electronic systems. automotive electronic systems, microwave ovens, refrigerators, stereo systems, digital music players This may include cameras such as digital cameras, mobile memory chips, and household appliances. Furthermore, the electronic device may include, but is not limited to, an unfinished product.

[0199] In particular, "can," "could," "may," "might," "for example," Conditional language such as "such as" is generally used unless specifically stated otherwise. Unless otherwise understood by the context of use, a given embodiment may be used in conjunction with a given to convey that features, elements and / or states are included while other embodiments do not. The term "coupled" as generally used herein means directly attached to one another or Refers to two or more elements that may either be joined through one or more intermediate elements. Similarly, the word "connected" as generally used herein means directly connected or connected to one or more It refers to two or more elements that may either be connected through an intermediate element. The words "here", "above", "below" and words of similar import are used in this Application. When used, it refers to the Application as a whole and not to any specific part of the Application. Where the context permits, the use of the singular or plural is not intended to refer to the above detailed Each term in the description may also include the plural or the singular. The terms "or" and "or" as used herein cover all of the following interpretations of that term: That is, any item in the list, all items in the list, and items in the list Any combination of:

[0200] Although certain embodiments have been described, these embodiments are presented by way of example only. It is not intended to limit the scope of the disclosure. Novel devices, filters, filter assemblies, chips, methods, apparatus and systems , may be embodied in various other forms. Various omissions, substitutions and changes in the form of the system may be made without departing from the spirit of this disclosure. For example, circuit blocks described herein may be deleted, moved, added, subdivided, etc. Each of these circuit blocks can be integrated, combined and / or modified. The following claims and their equivalents are intended to cover the present disclosure. It is intended to cover any such forms or modifications that fall within the scope and spirit of the present invention.

Claims

1. 1. A multiplexer having parallel hybrid elastic passive filters, comprising: a plurality of filters configured to filter respective radio frequency signals; a shared filter coupled between each of the plurality of filters and a common node; a radio frequency filter coupled to the common node; Including, each filter of the plurality of filters having a different passband; at least a first filter of the plurality of filters includes a plurality of elastic resonators and an inelastic passive component; The one non-elastic passive component includes an LC circuit connected in series between two of the plurality of elastic resonators.

2. 2. The multiplexer of claim 1, wherein the plurality of filters includes the first filter, a second filter, and a third filter.

3. the first filter is a first bandpass filter having a first passband; 3. The multiplexer of claim 2, wherein the second filter is a second bandpass filter having a second passband.

4. 4. The multiplexer of claim 3, wherein the third filter is a band-stop filter having a stop band that includes the first pass band and the second pass band.

5. 2. The multiplexer of claim 1, wherein the shared filter is a high-pass filter.

6. 6. The multiplexer of claim 5, wherein the radio frequency filter is a low pass filter.

7. 2. The multiplexer of claim 1, wherein the shared filter is an inelastic LC filter.

8. The multiplexer of claim 1 , wherein the shared filter includes a plurality of second acoustic resonators.

9. The multiplexer of claim 1 , wherein the one non-elastic passive component comprises an inductor arranged in parallel with a first elastic resonator of the plurality of elastic resonators.

10. the plurality of elastic resonators are mounted on an elastic resonator die; The one LC circuit is an inductor external to the one elastic resonator die; a capacitor external to the one elastic resonator die; 2. The multiplexer of claim 1, comprising:

11. 2. The multiplexer of claim 1, wherein a second filter of the plurality of filters includes a plurality of second elastic resonators and a second inelastic passive component.

12. the first filter has a first passband; the second filter has a second passband; 12. The multiplexer of claim 11, wherein the first passband and the second passband both lie within a frequency range of 2 gigahertz to 5 gigahertz.

13. the first filter has a first passband; the second filter has a second passband; 12. The multiplexer of claim 11, wherein the first passband and the second passband both lie within a frequency range of 2 gigahertz to 3 gigahertz.

14. The multiplexer of claim 1 , wherein the multiplexer is arranged as a quadplexer.

15. 1. A wireless communication device, comprising: The antenna and a multiplexer in communication with the antenna; Including, The multiplexer a plurality of filters configured to filter respective radio frequency signals; a shared filter coupled between each of the plurality of filters and a common node; a radio frequency filter coupled to the common node; Including, the plurality of filters includes a first filter including a plurality of elastic resonators and an inelastic passive component; The wireless communication device, wherein the one inelastic passive component includes an LC circuit connected in series between two of the plurality of elastic resonators.

16. The wireless communication device of claim 15 , wherein a second filter of the plurality of filters includes a plurality of second elastic resonators and a second inelastic passive component.

17. the wireless communication device is configured to support carrier aggregation at the common node; the carrier aggregation includes a first carrier and a second carrier; the first carrier is within a first passband of the first filter; 17. The wireless communication device of claim 16, wherein the second carrier is outside the first passband and a second passband of the second filter.

18. 1. A multiplexer having parallel hybrid elastic passive filters, comprising: a plurality of filters including a first filter and a second filter having different radio frequency passbands; a shared high pass filter coupled between each of the plurality of filters and a common node; a low pass filter coupled to the common node; Including, the first filter includes a plurality of first elastic resonators and a first LC circuit; the second filter includes a plurality of second elastic resonators and a second LC circuit; a multiplexer, wherein the one first LC circuit is connected in series between two of the plurality of first elastic resonators;

19. 20. The multiplexer of claim 18, wherein the plurality of filters further comprises a band-stop filter having a stop-band that includes the pass-bands of the first filter and the second filter.

20. 20. The multiplexer of claim 18, wherein the different radio frequency passbands both lie within a frequency range of 2 gigahertz to 5 gigahertz.

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