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 DISCLOSURE Embodiments of the present disclosure relate to hybrid elastic LC filters.

[0002] CROSS REFERENCE TO PRIORITY APPLICATIONS Any foreign or domestic priority claims are identified in the Application Data Sheet filed with this application. Any and all applications filed under this patent 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 Filters" 00,142, filed on July 18, 2018, "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" Benefiting from priority claim under U.S. Patent Act Section 119(e) of Application Serial No. 62 / 700,146 The disclosures of each of these priority applications are hereby incorporated by reference in their entirety. It can be seen. [Background technology]

[0003] An acoustic wave filter is a device 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 quartz filters. Acoustic wave filters are used in radio frequency electronic systems. 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. The LC filter is a passive LC filters are inelastic filters that contain components. It is possible to perform tagging.

[0005] Filters relatively high frequency radio frequency signals to meet strict filtering specifications Therefore, it is necessary to filter out 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 features is responsible for the desired attribute. Without further ado, a brief 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 with 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 a 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. where the second elastic resonator is a shunt resonator in series with the inductor. are arranged.

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

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

[0011] The first and second elastic resonators may be bulk acoustic wave resonators. The dielectric resonator and the second acoustic 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. The series LC resonant circuit may include a parallel LC circuit. The LC shunt circuit may include a series LC circuit. The LC circuit of the inelastic LC filter may further include a second shunt series LC circuit. .

[0014] The passband of the cascaded filters can be set by means of inelastic LC filters. 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 may range from at least 3.3 GHz to 4.2 GHz.

[0015] Another aspect of the present disclosure is a method for detecting a first filter coupled to a common node, and a second filter connected to the first filter. 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 a 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 method for transmitting a radio frequency (RF) signal from an antenna to a radio frequency (RF) front end in communication with the antenna. The radio frequency front end is adapted to transmit a signal via an antenna. The filter includes a filter configured for the purpose of filtering radio frequency signals. The hybrid elastic LC filter and the cascade-coupled The hybrid elastic LC filter includes an elastic resonator and a non-elastic LC filter connected to the elastic resonator. An elastic resonator on a resonator die, a capacitor external to the elastic resonator die, and a capacitor for connecting the elastic resonator to the 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 to each other. The hybrid elastic LC filter filters radio frequency signals. The hybrid elastic LC filter is constructed by electro-mechanical coupling of an elastic resonator die and an elastic a resonator die having 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. In the second state, the switch is configured to connect the hybrid elastic LC filter and The inelastic LC filter is configured to couple two inelastic LC filters. and 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. In the second state, 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 elastic resonator and the second elastic resonator. The LC filter further includes a second inductor in series with the first elastic resonator and a second elastic resonator. and a third inductor 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 a 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 GHz.

[0027] Another aspect of the present disclosure is a method of filtering a radio frequency signal. The lid includes coupling an elastic LC filter and a non-elastic LC filter by a switch. The hybrid elastic LC filter is a filter that uses an elastic resonator on an elastic resonator die and a A capacitor that is external to the die and an inductor that is external to the elastic resonator die. The method also includes a hybrid elastic LC filter and an inelastic filter bonded 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 by a switch. The hybrid elastic LC filter and the second non-elastic filter are decoupled from each other by a switch. and coupling a nonlinear LC filter to the power amplifier. By applying a frequency signal to the 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 method for transmitting a radio frequency (RF) signal from an antenna to a radio frequency (RF) front end in communication with the antenna. The radio frequency front end is adapted to transmit a signal via an antenna. The filter includes a filter configured for the purpose of filtering radio frequency signals. The filter consists of a hybrid elastic LC filter, a non-elastic LC filter, and a hybrid elastic LC 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 and an LC component external to the device.

[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; and 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 a stop band. 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 elastic resonator.

[0037] The first inelastic passive component may include a first inductor and a second inductor. Here, the first inductor is connected in parallel to the elastic resonator, and the elastic resonator is connected in parallel to the second inductor. 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 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 midrange 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 includes 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. It is acceptable to do so.

[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. The radio frequency front end is a wireless communication device including an antenna for receiving a radio frequency signal. The filter includes a second sub-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. Includes elastic passive components.

[0049] Another aspect of the present disclosure is a multiplexer having a hybrid elastic passive filter. The multiplexer includes a plurality of multiplexers 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. Each of the filters includes a first filter and a second filter coupled to the common node. The filters have different passbands. At least a first filter of the plurality of filters 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 second filter may be a The third filter may be a second bandpass filter having two passbands. The filter may be a bandstop filter having a stopband including a first passband and a second passband.

[0051] The shared filter may be a high-pass filter. The radio frequency filter may be a low-pass filter. It is acceptable to do so.

[0052] The shared filter may be a non-elastic LC filter. The shared filter may include a plurality of second elastic resonators. The liquid crystal display may include a liquid crystal display and an LC component.

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

[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. The data may include

[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. The first passband and the second passband may both have a frequency band between 2 GHz and 5 GHz. The first passband and the second passband may both be within a frequency range of 2 GHz. The frequency range may be from 100 Hz to 3 GHz.

[0056] The multiplexers may be arranged as quadplexers.

[0057] Another aspect of the present disclosure is a wireless communication device including an antenna and a multiplexer in communication with the antenna. The multiplexer is a receiving device that filters each radio frequency signal. and a plurality of filters configured to provide a common node between each of the plurality of filters. 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 an 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 the first carrier. and a second carrier, where the first carrier is a first passband of the first filter. a second carrier is located outside the first passband and in a second passband of a second filter; It is over-bandwidth.

[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 second filter includes a plurality of first elastic resonators and a first LC circuit. A second elastic resonator and a second LC circuit are included.

[0060] The plurality of filters further includes a band stop filter including the pass bands of the first filter and the second filter. The filter may include a filter.

[0061] Another aspect of the present disclosure is a hybrid elastic LC filter with harmonic suppression. The lid elastic LC filter is a hybrid filter designed to filter radio frequency signals. A lid passive / elastic filter and a hybrid passive / elastic filter cascaded The hybrid passive / elastic filter includes multiple elastic resonances and non-elastic LC filters. The non-elastic LC filter includes a filter and one non-elastic passive component. It is configured to suppress harmonics.

[0062] The inelastic LC filter may be a notch filter. The frequency response of a notch filter is The notch filter may have a notch corresponding to the second harmonic of the line frequency signal. 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 an 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 resonator arranged in series with the first inductor and in parallel with the second inductor. The piezoelectric resonator may include a piezoelectric resonator.

[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 / A hybrid passive / non-elastic LC filter cascaded with an elastic filter. The elastic filter includes a number 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 include 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 an 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 resonator arranged in series with the first inductor and in parallel with the second inductor. The piezoelectric resonator may include a piezoelectric 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. The radio frequency front end is a wireless communication device including 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 cascaded hybrid passive / elastic filter. The hybrid passive / elastic filter includes a plurality of elastic resonators and an LC filter. Contains non-elastic passive components. Non-elastic LC filters suppress harmonics of radio frequency signals. The antenna is configured to filter radio frequency signals with suppressed harmonics. The device is configured to transmit 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. , any one advantage or group of advantages taught herein, or any other advantages taught or suggested herein. It may be embodied or carried out in a manner that achieves or optimizes, but does not necessarily achieve, the Cut. [Brief description of the drawings]

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

[0079] [Figure 1] FIG 1A is a schematic block diagram of a cascaded filter including a hybrid elastic LC filter and an LC filter according to an embodiment; FIG 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; FIG 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; [Diagram 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; [Diagram 3] 3A is a schematic block diagram of a radio frequency system of cascaded filter circuits according to one embodiment, FIG. 3B is a schematic block diagram of a radio frequency system having cascaded filter circuits according to another embodiment, and FIG. 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. [Diagram 5] 5A and 5B are schematic block diagrams of a multiplexer including cascaded filters and other filters coupled to a common mode via a switch according to one embodiment, and another embodiment, respectively. [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. 13 is a schematic diagram of a cascaded filter according to another embodiment. [Figure 8] FIG. 13 is a schematic diagram of a cascaded filter according to another embodiment. [Figure 9] FIG. 13 is a schematic diagram of a cascaded filter according to another embodiment. [Figure 10] FIG. 13 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. 13 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. 2 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 highpass filter and a hybrid parallel bandpass filter according to an embodiment. [Figure 17] FIG. 2 is a schematic block diagram of a quadplexer including a shared highpass filter and a hybrid bandpass 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] 19 shows a simulation result of the triplexer of FIG. [Figure 19B] A graph of the simulation results of the triplexer of FIG. 18 is shown in comparison with a previous design. [Figure 20] FIG. 2 is a schematic block diagram of a hybrid parallel bandstop filter according to an embodiment. [Figure 21] FIG. 2 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] Fig. 24A is a schematic diagram of an example low pass filter, Fig. 24B is a schematic diagram of another example low pass filter, Fig. 24C is a schematic diagram of an example second harmonic notch filter, Fig. 24D is a schematic diagram of an example harmonic notch filter, and Fig. 24E is a schematic diagram of an example second harmonic notch and low pass filters. [Diagram 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 according to an embodiment; [Figure 26] FIG. 2 is a schematic diagram of a radio frequency module having a transmit path including a filter according to an embodiment. [Figure 27] FIG. 2 is a schematic diagram of a radio frequency module having a receive path including a filter according to an embodiment. [Figure 28] FIG. 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. [Diagram 30] FIG. 13 is a schematic diagram of a wireless communication device including a filter according to another embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[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 understood that the drawings It is to be further understood that elements depicted in the drawings are not necessarily to scale. The embodiments may include more elements than are shown in the drawings and / or may include more elements than are shown in the drawings. Additionally, some embodiments may include any subset of features from two or more of the drawings. The headings provided herein are for convenience only. These statements 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, moreover, Several 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 uses an inelastic L filter cascaded with a hybrid passive / elastic filter. C filters. Here, the inelastic LC filters are hybrid passive / elastic filters Such a filter is arranged to suppress harmonics of the radio frequency signal provided by 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 in the same way.

[0082] Hybrid Elastic LC Filter Cascaded with LC Filter

[0083] With the advancement of fifth-generation (5G) wireless communication technology, inelastic wideband - ultra-high bandwidth (UHB) filters Router designs are facing difficulties in meeting new carrier aggregation specifications. The new carrier aggregation generally introduces a lot of intermodulation interference that can degrade receiver sensitivity. Therefore, the carrier aggregation specification provides further restrictions on the filters. The IEEE 802.11b standard may have even more stringent intermodulation distortion (IMD) rejection specifications.

[0084] LC bandpass filters, such as integrated passive device (IPD) bandpass filters, are used in a wide range of applications. It has the advantage of a 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 smaller passband edge frequency compared to elastic filters. This typically results in a loss in the stopband close to the passband. On the other hand, this is not preferred 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 provides 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 the hybrid elastic LC filter. do.

[0086] A carrier having relatively sharp rejection at frequencies relatively close to the passband of the filter. To provide an aggregation IMD rejection compliant filter, a hybrid elastic LC filter is used. A hybrid elastic LC filter can be implemented using one or more capacitors, The filter may be a wideband filter including 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 filters. The LC filter can provide a relatively sharp rejection at frequencies close to the The hybrid elastic LC film may include an integrated passive device (IPD) on the passive device die. 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 include a cascaded filter for filtering radio frequency signals. The cascaded filter is a hybrid elastic LC filter and and a non-elastic LC filter cascaded with 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 1000-MHz band. The filter shall be designed to operate at least at 2.5 gigahertz (GHz) or The cascaded filters may include a passband having a lower frequency limit of at least 3 GHz. The TDK is designed to operate at approximately 4.5 GHz, 6 GHz, and 8.5 GHz in a given application. 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 disclosed cascaded filters meet 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 an embodiment. FIG. 1 is a schematic block diagram of a cascaded filter 10 including The first port, RF 1 and second port RF 2 Hybrid elastic LC film The first port RF 1 and the second port RF 2 Between each other The radio frequency signal is applied to the first port RF 1 From the second port RF 2 Radio frequency signals can be used in a variety of applications. In the second port RF 2 From the first port RF 1 It can spread to.

[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 may be a BAW resonator that operates at frequencies above 2.5 GHz. It may be advantageous to filter high frequency signals, such as circulating frequencies. The elastic resonator may alternatively or additionally be one or more surface acoustic wave (SAW) resonators, one or more and / or any other suitable elastic resonators, 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 examples. Hybrid elastic LC filters can be implemented with lower complexity than conventional filters. 12 may be tunable in some applications. If the mid-elastic LC filter 12 is tunable, the notch and / or the stopband can be tuned. It may be 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 may have a higher quality factor and lower insertion loss than board mounted IPDs and passive devices. One or more of the capacitors may be explicit and / or parasitic. The LC circuit 14 may also implement impedance matching.

[0093] FIG. 1B illustrates an embodiment of a cascaded signal path between a power amplifier 16 and an antenna 17. 1 is a schematic block diagram of a radio frequency (RF) system 15 including a bandpass filter 10. FIG. 1B shows that the cascaded filter 10 can be included in a transmit signal path. In a given application, the first port RF of the cascaded filter 10 1 Is, The cascaded filter 10 may be electrically coupled to the output of the power amplifier 16. 2nd Port RF 2 can be electrically coupled to the antenna 17. In this application, the first port RF of the cascaded filter 10 1 Antenna 17 The second port RF of the cascaded filter 10 can be electrically coupled to 2 teeth, 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 an embodiment. FIG. 1C is a schematic block diagram of an RF system 18 including the cascaded filter 10. , it is shown that the cascaded filter 10 can be included in the receive signal path. In this embodiment, the first port RF of the cascaded filter 10 is 1 is a low noise amplifier The second input of the cascaded filter 10 can be electrically coupled to the input of the amplifier 19. Port RF 2 The antenna 17 may be electrically coupled to the antenna. In this embodiment, the first port RF of the cascaded filter 10 is 1 The antenna 17 is The second port RF of the cascaded filter 10 can be electrically coupled to 2 Low-quality The sound amplifier can be electrically coupled to the input of amplifier 19 .

[0095] FIG. 2A illustrates an embodiment of a LC filter 14A and a LC filter 14N coupled through a switch 22. A schematic diagram of a cascaded filter circuit 20 including a 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 the 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 cascade. The cascaded filter circuit 20 includes a corresponding number of LC filters 14A to 14N. The LC filters 14A and 14N shown in the figure are each a part of the 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 of the selected In a given application, the hybrid elastic LC The filter 12 includes a selected one of the LC filters 14A-14N electrically coupled thereto. To tune the rejection at frequencies relatively close to one or more of the passbands selected, 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 comprising multiple hybrid elastic filters. The LC filter 14 can be shared among the LC circuits 12A to 12N. , an LC filter 14 is connected to the selected hybrid The switch 22 shown is a multi-throw RF The switch 22 switches the LC filter 14 to the selected hybrid elastic modulus. The switch 22 may be electrically coupled to a passive LC filter. and the cascaded filter circuit 25 includes 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. FIG. 2 is an example system in which the present invention may be implemented. As shown, antenna 32 is a high 1, coupled to the hybrid elastic LC filter 12, and the switch 22 is 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 a cascaded filter circuit according to another embodiment. FIG. 3B is a schematic block diagram of a power amplifier 30B in which the LC circuits 14A and 14B are It is shown that the devices 34A and 34B may be 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 between the power amplifier 34; A cascaded filter circuit having an LC filter 14B between B and the antenna 32. may be included.

[0099] FIG. 3C illustrates a radio frequency system having a cascaded filter circuit according to another embodiment. FIG. 3 is a schematic block diagram of a cascaded filter of a radio frequency system 30C. The data can be implemented, for example, in a diversity reception application. , LC circuits 14A and 14B are different with low noise amplifiers 36A and 36B, respectively. Therefore, the hybrid elastic LC filter 12 may be present in the receiving path. (a) A cascade amplifier having 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

[0100] FIG. 4A illustrates a multi-stage 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 The cascaded filters including the 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 quad duplicator, 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., an IPD filter). 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 multiplexer 45. The hybrid elastic LC filter 12 is similar to the filter 40, but 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. FIG. 1 is a schematic diagram of a radio frequency system 50 including a cascade filter 42 and another filter 42. The node-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 is 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 a band 42 signal and / or a band 43 signal and / or a band 4 8 signals having frequencies above 3 GHz. In such an application, the filter 60 may be a bandpass filter. The acoustic wave resonator may be a BAW resonator. The filter 60 is suitable for use in a fifth generation (5G) wireless system. 5G technology can be used in 5G new radio applications. The cascaded filter 60 is cascaded to an 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. 1 is an example of a filter 14.

[0105] The hybrid elastic LC filter 62 includes elastic resonators A61 and A62, an inductor L6 01, L602, L603, L604, L605 and L605, and capacitor C60 1, C602, C603 and C604. The elastic resonators A61 and A62 are FBARs. In some examples, the elastic resonators A61 and A62 may be BAW resonators such as SAW resonators, temperature compensated SAW (TCSAW) resonators, boundary acoustic wave resonators, Lamb wave resonators The inductors L601, L602 may include a resonator, a resonator, etc., or any suitable combination thereof. 2, L603, L604, L605 and L605, and capacitors C601 and C602 , C603 and C604 are LC / inelastic components. Hybrid Elastic LC The LC / inelastic components of the filter 62 are formed on a die containing elastic resonators A61 and A62. The LC / inelastic components of the hybrid elastic LC filter 62 can be mounted externally. The components 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 be The component has one or more IPDs and / or one or more conductive trays on the package substrate. It may include

[0106] As shown, the hybrid elastic LC filter 62 is connected in parallel to an elastic resonator A62. The hybrid resonator structure includes an inductor L602. 3 is connected in series with the inductor and the elastic resonator A62. Further details on this 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 a 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 bandpass filter. The LC filter 64 may be a band pass filter for the IPD die. 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 a series LC tank. The second bridge capacitor has a first end connected to the first LC resonant circuit and a second end coupled to the first LC resonant circuit. The second LC common 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 Includes 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 a second LC resonant circuit. The tank and the third coupling capacitor C606 form a second LC resonant circuit and a second coupling capacitor C6 07. 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. The curve represents the frequency response of the cascaded filter 60 of FIG. The curves in FIG. 6B represent the cascaded filters of FIG. 6A. It is shown that the frequency response of the 60 meets the design specifications except at 9 GHz. The filter response has two nulls provided by the shunt elastic 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. Thus, 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 3.3GHz. Elastic resonance, such as a bandwidth of about z~4.2 GHz, or 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 FIG. 1 is an example of a non-elastic LC filter connected to a MOSFET. The principles and advantages described herein can be applied to a variety of Other filter topologies can be implemented. Some examples of filter topologies are These filters can be used, for example, in 5G applications. These filters consist of elastic resonators such as FBARs, inductors and capacitors. The inductors and capacitors include 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 presented. The characteristics of these filters are Any suitable combination of the above 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 of the present invention.

[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 elastic 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 an IPD die. The IPD can be implemented with a number of capacitors and inductors. In this embodiment, the LC filter 74 is implemented using SMT capacitors and inductors on the IPD die. It 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 has a passband from about 3.3 GHz to 4.2 GHz. According to another embodiment, the filter may be a cascaded filter having a bandpass filter. The cascaded filter 8 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 includes elastic resonators A81, A82, A83, A84 and and A85, capacitors C801 and C802, and inductors L801, L802, L The elastic resonators A81 to A85 are BAW resonators. Capacitors C801 and C802 may be SMT capacitors. Inductors L801-L805 are used to connect SMT inductors to 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. The inductors L802 to L805 and the capacitors L803 to L805 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 described with reference to the above can function similarly.

[0118] The illustrated LC filter 84 includes capacitors C803, C804, C805, C806 and C807 and inductors L806, L807, L808 and L809. The Filter 84 can be used to measure one or more IPDs, one or more SMT components, one or more The conductive traces may include, for example, 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 cascaded 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. The components may include surface mounted passive components other than shunt inductors. Such shunt inductors may 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) on a given side. The cascade filter may be a receive filter coupled between the cascade switch and the low noise amplifier. The cascaded filter 90 can improve insertion loss over previous designs. The node connection filter 90 may be, for example, a receive filter.

[0120] The hybrid elastic LC filter 92 includes elastic resonators A91, A92 and A93, a capacitor C901, C902, C903 and C904, and inductors L901 and L902 , L903 and L904. The elastic 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 of 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 one or more SMT components, one or more conductive traces on a substrate, or Any suitable combination of these may be included. In one embodiment, the LC filter 94 is , 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-type LC filter cascaded with an LC filter 104. The hybrid elastic LC filter 102 includes a hybrid elastic LC filter The LC filter 104 is an example of the LC filter 14. In certain embodiments, the cascaded filter 100 may be an IPD, a surface mounted passive component, These may include components, inductive traces on the laminate, and FBARs. The inverter 100 has a first side coupled between an antenna switch and a 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 Inductors L1001 to L1006 may include one or more SMT inductors, one or more IPD inductors, one or more conductive layers on the package substrate In one embodiment, the inclusion of a marker may include a marker, a marker of activity ... or any suitable combination thereof. Inductors L1001 to L1006 are 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 resonator including inductors L1002 and L1003 and an elastic resonator A102 The resonator functions similarly to the hybrid resonator described with reference to FIGS. 11A and 11B. A hybrid including inductors L1005 and L1006 and an elastic resonator A103 can be used. 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 that described above.

[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 use acoustic wave resonators and inelastic passive capacitors. The present invention may include a variety of hybrid resonators that include the above-mentioned components. Several example hybrid resonators are 11A-12. These hybrid resonators are described herein. 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 resonator 112 may be, for example, a FBAR. The resonator 112 may be any other suitable resonator. The elastic resonator 112 is connected in parallel to the first inductor 114. The elastic resonator 112 is , and is connected in series with the second inductor 116. The inductors 114 and 116 and the elastic resonator 112 The combination of the two notches relatively close to the passband without significant effect on transmission loss. The notch can be located 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. 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 hybrid 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 to match the impedance between the resonators and to eliminate the need for a hybrid resonator. This provides 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 development of 5G wireless communication technology, new carrier aggregation (CA) specifications are being Such a new CA can specify strict intermodulation distortion (IMD) rejection for the filter. 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 is relatively By using hybrid resonators such as hybrid elastic LC resonators with sharp blocking properties, 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 edge-band frequencies. To achieve this, hybrid elastic LC wide 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 of the bandpass filter (BPF) (e.g. To give the higher band arm (at 2.4GHz for Wi-Fi) a particularly sharp rejection , a parallel hybrid elastic LC filter. The series hybrid elastic LC filter can be cascaded with other filters such as passive inelastic filters. It is possible to connect the board.

[0133] Hybrid elastic LC filter having parallel hybrid elastic LC sub-filters is 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 first signal; and 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 the elastic LC circuit may be implemented. The parallel hybrid elastic LC filter includes a hybrid resonator 110 of FIG. As another example, a parallel hybrid elastic LC filter can be obtained by using the hybrid filter shown in FIG. 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 , and the high-band path. Such filters can 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 reduce the 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 The parallel hybrid elastic LC filters 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 of parallel bands 40 and 41. A hybrid elastic LC bandpass filter is provided to adequately pass Band 40 and Band 41 signals. While giving the 2.4GHz Wi-Fi frequency band more bandwidth, it also provides strong blocking. In some embodiments, the passive inelastic filter can be 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 frame can be cascaded. A triplexer is achieved by using a 10-V 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 can effectively be used as a system-level carrier aggregate. It can also 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 an embodiment. The parallel hybrid bandpass filter 130 is a block diagram of a first embodiment of the present invention. The first bandpass filter 132 and the second bandpass filter 134. The first bandpass filter 132 and the second bandpass filter 134 are used to filter the radio frequency signal. The first bandpass filter 132 includes 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 a second elastic resonator and a second inelastic passive component. The second inelastic passive component may include at least an inductor and a capacitor. The first bandpass filter 132 has a first passband, and the second bandpass 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 has 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] Several embodiments refer to parallel hybrid elastic LC filters for high-band filters. Notwithstanding the above, 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 It 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 cascade, any suitable number of filters may be coupled together to 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 to a common node via Some examples of multiplexers including the above-mentioned multiplexers will be described with reference to FIGS. An example of a multiplexer including a column hybrid elastic filter 130 is Filter 130 may be implemented according to any suitable principles and advantages.

[0140] FIG. 14 illustrates a die-plate including a hybrid parallel bandpass filter 130 according to one embodiment. 1 is a schematic block diagram of a hybrid parallel band diplexer 140. A pass filter 130 and a second filter 144. As shown, the parallel hybrid ammunition The active filter 130 may be a high-band filter and the second filter 144 may be a mid-band filter. The parallel hybrid elastic filter 130 and the second filter 144 may be The second filter may be coupled together to a common node, such as the antenna node ANT. The 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 band-stop filter. The band may be a first passband of the first bandpass filter 132 and / or a second passband of the second bandpass filter This may include some or all of the second passband of 134.

[0141] FIG. 15 illustrates a triplex filter including a hybrid parallel bandpass filter 130 according to an embodiment. 1 is a schematic block diagram of a triplexer 150. The triplexer 150 is a hybrid parallel The filter includes a band pass filter 130, a second filter 154, and a third filter 156. Thus, the parallel hybrid elastic filter 130 may be a high-pass filter, and the second filter 154 may be a mid-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 FIG. The second filter 154 may be coupled together at a common node, such as node ANT. , high-pass and band-reject 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 first filter 134. The third filter may be a highly elastic LC filter, a non-elastic LC filter or a acoustic wave filter. The third filter 156 may be a hybrid elastic LC filter. The third filter 156 may be a first filter, a second filter, a non-elastic LC filter, or a second filter. The passbands of the hybrid parallel bandpass filter 130 and the hybrid parallel bandpass filter 154 are It allows circulating frequencies to pass through.

[0142] FIG. 16 illustrates a shared high-pass filter 162 and a hybrid parallel bandpass filter according to one embodiment. FIG. 1 is a schematic block diagram of a triplexer 160 including an overpass filter 130. The triplexer 160 is similar to the triplexer 150 of FIG. 15, but has a shared high-pass filter 1. 62 is cascaded to both the hybrid parallel bandpass filter 130 and the second filter 144. The difference is that the two filters are cascaded and that the second filter 144 is a band-stop filter. Thus, 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 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 is used. The shared high-pass filter 162 may be an inelastic passive filter. Together with the parallel hybrid elastic filter 130, it provides a relatively wide bandwidth and 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 The difference is that separate terminals are provided for the first band-pass filter 134 and the second band-pass filter 135. This gives more freedom 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] FIG. 17 shows an example of a multiplexer including a hybrid elastic passive filter. The first bandpass filter 132 and the second bandpass 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 a non-elastic passive component. In some embodiments, the inductor and capacitor are external to the die that contains 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 from 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 rejection 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 has a smaller capacitance than the triplexer 160 of FIG. For example, the performance of rear aggregation can be improved by using a quadplexer. The wireless communication device includes a carrier adapter including a first carrier and a second carrier at a common node. In this example, the first carrier is the first band. 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. Therefore, the lack of filtering reduces the insertion loss in the quadplexer 170. 160.

[0147] FIG. 18 illustrates a triplex filter 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 a Hybrid parallel bandpass filter 182, hybrid elastic LC filter 184, non-elastic 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 connected to 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-band signal is A hybrid parallel bandpass filter 182 is connected via inductors L1801 and L1802. The hybrid parallel bandpass filter 182 is composed of elastic resonators A1801, A1802, 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 a first sub-filter 1807. 8 includes several parasitic capacitances not shown in the figure. However, these parasitic capacitances are not included in the hybrid parallel Part of the LC circuit of the bandpass filter 182. Hybrid parallel bandpass filter 1 The inductor of 82 may be one or more SMT inductors and / or one or more conductive layers of a substrate. 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 described above.

[0149] The hybrid elastic LC filter 184 includes an elastic resonator, an inductor and a capacitor. As shown in the figure, 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 of the present invention. This is the mid-band filter in 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. Such 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 (RF) harmonics. The harmonic notch filter 188 can provide notches at the harmonics of the signal. For example, the low pass filter of FIG. 24D may be implemented according to any suitable principles and advantages. The illustrated harmonic notch filter 188 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] FIG. 19A shows the results of a simulation of the triplexer 180 of FIG. indicates the passbands of the filters 182, 184 and 186 of the triplexer 180. The pass filter 186 has a pass band indicated by a solid curve. has a passband shown by the first dashed curve. Parallel Hybrid Elastic Bandpass Filter 182 has passbands shown with different dashed curves. Filter 182 has a notch in the middle of its passband. This notch is The lid elastic bandpass filter 182 is arranged to pass two different frequency bands The simulation results show that the triple-band design can be used in a wide frequency range compared to previous designs. Improved isolation across the 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 results of a simulation of the triplexer 180 of FIG. These simulation results show that the triplexer 180 , showing improvements in both insertion loss and isolation compared to previous designs.

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

[0155] FIG. 20 is a schematic block diagram of a hybrid parallel bandstop filter 200 according to an embodiment. FIG. 2 is a block diagram of a hybrid parallel bandstop filter 200. Using LC notch filters in close proximity can significantly degrade in-band loss. A relatively wide band rejection can be achieved without

[0156] The parallel hybrid bandstop filter 200 includes 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 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 including at least The second bandstop filter 204 may include a second elastic resonator. and a second inelastic passive component. The elastic 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-rejection 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 includes a first stopband and a stopband passband. The frequency response of the hybrid parallel bandstop filter 200 has a first stopband. 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 hybrid parallel bandstop filter of FIG. 2 is an example of a filter 200. The hybrid parallel bandstop filter 210 is an acoustic wave resonator. 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 bandstop filter 210.

[0159] As shown, a radio frequency signal is input to the harmonics through inductors L2101 and L2102. A hybrid parallel bandstop filter 210 is provided. The actuator 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 that includes , the second subfield including 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 include one or more S The hybrid may include a MT inductor and / or one or more conductive traces on a 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. It is shown that a relatively wide stopband can be achieved.

[0161] Hybrid Elastic LC Filters with Harmonic Suppression

[0162] With the development of 5G wireless communication technology, a new carrier aggregation (CA) is being CA IMD Rejection Compliant Filters To give the filter a sharp rejection at frequencies near the passband, the elastic support filter is It provides relatively low loss, a wide passband, and relatively sharp rejection at frequencies near the passband. The design is based on hybrid resonators such as hybrid elastic LC resonators with thermal resistance. The elastic resonator can generate harmonics when relatively high power is applied. The harmonics generated by the surface acoustic device or the 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 the 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 for suppressing harmonic frequencies above. , a low pass filter and / or a notch filter. 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 with an 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. and a non-resonant passive / elastic filter configured to suppress harmonics of the radio frequency signal. Hybrid passive / elastic filters include multiple elastic resonators and a single The non-elastic LC filter is a hybrid passive / elastic filter. The filter is cascaded to the

[0166] The inelastic LC filter may be a notch filter. The frequency response of a notch filter is The notch filter may have a notch corresponding to the second harmonic of the line frequency signal. 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 be any of the hybrid resonators disclosed herein. The implementation may be in accordance with any suitable principle and advantage of the above. 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 variety of performance benefits like standalone filters. In an application, a plurality of filters arranged to filter radio frequency signals are provided. A multiplexer including a filter and a wireless communication device such as a mobile phone The parallel hybrid elastic LC flow with harmonic suppression described herein can be used 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: A radio frequency signal can be received 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. The low-pass filter 234 filters out such Such harmonics can be filtered out. Thus, the filter 230 As shown in the figure, the low-pass filter is a hybrid elastic LC filter with harmonic suppression. The filter 234 is disposed 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 a suitable combination of one or more The one or more capacitors may include an LC circuit including an inductor and one or more capacitors. One or more IPD capacitors, one or more surface mount capacitors, one or more parasitic capacitances The one or more inductors may include a one or more IPD inductors, one or more surface mount conductors, conductive traces on the package substrate, 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. The hybrid elastic LC filter 232 may be used in a given application as shown in FIG. The ladder structure 120 may include a hybrid ladder structure 120.

[0171] In a given application, the hybrid elastic LC filter 232 is It may have a passband of 50 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. In various embodiments, the hybrid elastic LC filter 232 includes: (a) a carrier-amplifier; (b) providing rejection for the aggregation transmission blocker, and (c) the continuous wave out-of-band blocker. 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 passes 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. The frequency may be set to a frequency below the second harmonic of the signal. The elastic LC filter 232 is a band-pass filter, and the cutoff frequency of the low-pass filter 234 is The pass frequency is above the pass band of the band pass filter and the band pass filter Below the second harmonic of the radio frequency signal to be passed.

[0173] The low pass filter 234 may be an inelastic LC filter. may include one or more capacitors and one or more inductors. 4 is one or more IPDs, one or more surface mount passive components, and a package substrate one or more passive components on the package substrate, such as one or more inductive traces, 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. Filter 235 is cascaded with harmonic notch filter 236 according to one embodiment. The radio frequency system of FIG. 23B includes a hybrid elastic LC filter 232. 23B. The radio frequency system of FIG. 3A is similar to that of FIG. 3A, except that the filter 230 of FIG. 23A is 23A is replaced by filter 234. Filter 235 is the same as the filter in FIG. 23A. The filter 230 is similar to the filter 230 of FIG. 23A, but replaces the low-pass filter 234 from the filter 230 of FIG. 2, 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 bonded in between.

[0175] The harmonic notch filter 236 is configured to filter the radio frequency (RF) signals 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 its frequency response at the second harmonic. 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 as At the harmonics of the radio frequency signal provided by the hybrid elastic LC filter 232 The notch in the harmonic notch filter 236 is a hybrid elastic LC filter 232. Therefore, it is 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 mounted passive components, one or more inductive traces on the package substrate or any suitable combination of such a package substrate, 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] FIG. 24A is a schematic diagram of an example low-pass filter 240. 40 is an example of the low pass filter 234 of 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 the inductance of the shunt capacitor C1. and the capacitance of shunt capacitor C1 together form low pass filter 240 The cutoff frequency at

[0178] FIG. 24B is a schematic diagram of another example of the 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 of FIG. 23B. The inductor 243 includes a shunt series LC circuit. The inductor Ls and the capacitor C1 can set the frequency of the notch. The different impedances of 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 provided to the harmonic notch filter 243. Alternatively, the notch can be provided to a harmonic notch filter 243. The frequency may 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 of 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. The two shunt series LC circuits include an inductor Ls2 and an inductor Ls3. Thus, the harmonic frequencies shown in the figure can be given 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 is possible to do so.

[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, quadplexers, etc. 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 a hybrid elastic LC filter with In these example embodiments, the multiplexer is Although the present invention is directed to a multi-layered semiconductor laser, the principles and advantages associated with such an embodiment may be applied to any other suitable semiconductor laser. Other suitable multiplexers include die-mounted These include quadplexers, quadplexers, etc.

[0183] FIG. 25A is a schematic block diagram of a triplexer 250. 0 is a hybrid elastic filter cascaded with a low pass filter 234 according to one embodiment. The triplexer 250 includes the filter 230 of FIG. The filter 230 includes a bandpass filter 252, and a low-bandpass filter 254. The input 252 and the low-pass filter 254 are coupled together at a common node. The triplexer 250 has a filter 230, which is an antenna node in the triplexer 250. The mid-band filter in the plexer 250. The high-band 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 arranged to filter any of the signals described herein. The filter 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 is a filter that includes a non-elastic LC circuit element, such as The low-pass filter 254 may be implemented by any other suitable circuit elements. The low-band filter 254 may be a low-band radio frequency (LF) filter or a band-pass filter. The low pass filter 254 is arranged to filter the frequency signal. The present invention relates to a hybrid elastic LC filter implemented according to any suitable principle and advantage. 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 doped elastic LC filter 232. 250, except that it includes filter 235 instead of filter 230. The filter 235 is a hybrid elastic LC filter 232 that is provided with a radio frequency. It includes a harmonic notch filter 236 arranged to suppress harmonics in the signal. Wave notch filter 236 may be used to filter out two or more harmonics in some applications. In certain embodiments, the filter of the multiplexer may be provided with a notch. 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. Several 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 may be disposed on a common packaging substrate. The packaging substrate may be, for example, 26-28 show exemplary packaged modules according to certain embodiments. FIG. 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 in Figs. 26 to 28 can be mounted together. Although filters are shown in the module, any such filter must be It can be implemented in lexers.

[0187] FIG. 26 illustrates a radio frequency module having a transmit path that includes 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. 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. 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 used to switch the transmit signal path to a 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 that includes 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 The filter 272 includes a receive radio frequency amplifier 274 and a radio frequency switch 274. Filter 272 is a receive filter arranged to filter the wavenumber signal. The filter may include any suitable combination of the features of the filters disclosed herein. 74 amplifies the filtered received radio frequency signal provided by the filter 272 The radio frequency switch 274 may 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 input and output terminals may be arranged to be multi-throw radio frequency switches. , 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 284 includes a power amplifier 263 and a low noise amplifier 274. 82 may include any suitable combination of filter features disclosed herein. The 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 include 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, a rear end ... The RF front end 292 includes a filter 293, a transceiver 294, a processor 295, The antenna 291 includes an RF front end. The RF signal provided by the input 292 may be transmitted. The antenna 291 receives an RF signal, which may include a carrier aggregated signal. Such an RF signal may be provided to an 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 10-GHz frequency multiplexing circuit, a 10-GHz frequency multiplexing circuit, or any combination thereof. The interface 292 is capable of transmitting and receiving RF signals associated with any suitable communications standard. Filter 293 may be implemented according to any suitable principles and advantages of filters described herein. For example, the filter 293 may be implemented as shown in any one of FIGS. The RF front end 292 may implement any suitable combination of the features described above. The filters may be implemented in accordance with any suitable principles and advantages disclosed herein. can be done.

[0194] The RF transceiver 294 couples 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 a low noise amplifier. 295. The processor 295 may be a baseband processor. 295 may provide any suitable baseband processing functionality for the wireless communication device 290. The memory 296 is accessible to the processor 295. The processor 290 may store any suitable data for the wireless communication device 290. The processor 295 also communicates with a 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 an 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. Similar to 290, but the wireless communication device 300 further includes diversity receiving functionality. As shown in FIG. 30, the wireless communication device 300 has a diversity antenna. and a diversity antenna 301 configured to process a signal 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 receive module 302 . Filter 303 may be implemented according to any suitable filter principles and advantages described herein. For example, the filter 303 may be any of those 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 utilized in conjunction with the systems, modules, chips, The present invention relates to a filter assembly, a filter, a wireless communication device and method, as well as other suitable systems. SYSTEMS, MODULES, CHIPS, FILTER ASSEMBLY, FILTER, WIRELESS COMMUNICATION DEVICES AND METHODS - Patent application The elements and acts of the various embodiments described above may also be applied to further implementations. Any of the principles and advantages described herein may be combined to provide In the range of about 30 kHz to 300 GHz, such as in the range of about 450 MHz to 8.5 GHz The present invention is implemented in association with a radio frequency circuit configured to process signals having a frequency in It is possible.

[0198] Aspects of the present disclosure may 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 is used in mobile phones such as smartphones, smart watches, or accessories such as earpieces. 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. In addition, the electronic device may include, but is not limited to, an unfinished product.

[0199] In particular, "can," "may," "may," "may," "for example," Conditional language herein, such as "such as" is generally used unless specifically stated otherwise. Unless otherwise understood by the context of use or description, a given embodiment may be used in a given To convey that features, elements and / or states are included while other embodiments do not include them. As generally used herein, the term "coupled" refers to being directly attached to one another or Refers to two or more elements that may either be joined via one or more intermediate elements. Similarly, the word "connected" as used generally 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 this Application as a whole and not to any specific part of this Application. Where the context permits, the above detailed description using the singular or plural 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 the above.

[0200] Although certain embodiments have been described, these embodiments are presented by way of example only. In fact, the disclosure herein is not intended to limit the scope of the present disclosure. Novel devices, filters, filter assemblies, chips, methods, apparatus and systems In addition, the methods, apparatus and methods described herein 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 the present 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 in various ways. The following claims and their equivalents are intended to cover the present disclosure. It is intended to cover any such forms or modifications that come within the scope and spirit of the present invention.

Claims

1. 1. A parallel hybrid elastic passive filter, comprising: a first sub-filter including a first elastic resonator and a first inelastic passive component; a second sub-filter coupled in parallel to the first sub-filter; Including, the second sub-filter includes a second elastic resonator and a second inelastic passive component; The first sub-filter and the second sub-filter are configured to filter radio frequency signals. The parallel hybrid elastic passive filters are arranged together to provide a

2. The first sub-filter and the second sub-filter are band-pass filters having a pass band.

2. The parallel hybrid elastic passive filter of claim 1 arranged together as:

3. The frequency response of the parallel hybrid elastic passive filter is a first sub-passband corresponding to the first sub-filter; 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; 2. The parallel hybrid elastic passive filter of claim 1 , comprising:

4. The first sub-filter and the second sub-filter are band-stop filters having stop bands.

2. The parallel hybrid elastic passive filter of claim 1 arranged together as:

5. 5. The parallel hybrid of claim 4, wherein the bandstop filter has a notch in the stopband. Elastic passive filters.

6. The first sub-filter of claim 1 , wherein the first sub-filter includes a bulk acoustic wave resonator including the elastic resonator. Parallel hybrid elastic passive filters.

7. the first inelastic passive component includes a first inductor and a second inductor; The first inductor is connected in parallel to the elastic resonator, and the elastic resonator is connected in parallel to the second inductor. The parallel hybrid elastic passive element of claim 1 is arranged as a shunt resonator in series with a filter.

8. the first subfilter further includes an additional elastic resonator; the first elastic resonator and the additional elastic resonator are shunt resonators; The first non-elastic passive component is between the first elastic resonator and the additional elastic resonator.

2. The amplifier of claim 1, further comprising a capacitor and an inductor arranged as an LC tank coupled to Parallel hybrid elastic passive filters.

9. 2. The parallel hybrid of claim 1, wherein the second inelastic passive component comprises an integrated passive device. Red elastic passive filter.

10. 2. The method of claim 1, wherein the first sub-filter and the second sub-filter have different passbands. Parallel hybrid elastic passive filters.

11. The lower limit of the passband of the parallel hybrid elastic passive filter is at least 2 GHz.

2. The parallel hybrid elastic passive filter of claim 1 .

12. 1. A multiplexer having parallel hybrid elastic passive filters, comprising: A first filter coupled to the common node and configured to filter radio frequency signals. Ta, a second filter coupled to the common node; and Including, 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 second sub-filter includes a second elastic resonator and a second inelastic passive component. Multiplexer.

13. 13. The multiplexer of claim 12, wherein the first filter is a bandpass filter.

14. The frequency response of the first filter is a first sub-passband corresponding to the first sub-filter; 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; 14. The multiplexer of claim 13, comprising:

15. 14. The multiplexer of claim 13, wherein the second filter is a band-stop filter.

16. The first filter is a bandstop filter having a stop band and a notch in the stop band.

13. The multiplexer of claim 12 .

17. The second filter includes other elastic resonators and other inelastic passive components. 12 multiplexers.

18. the first filter having a first passband; the second filter having a second passband; The first passband has a lower edge that is at a higher frequency than the upper edge of the second passband.

13. The multiplexer of claim 12 having a first edge.

19. The multiplexer of claim 12 further comprising a third filter coupled to the common node.

20. a shared filter connected in series between the first filter and the common node; The shared filter is also serially connected between the second filter and the common node. The multiplexer of item 12.

21. 21. The multiplexer of claim 20, wherein the shared filter is a high pass filter.

22. 1. A wireless communication device, comprising: Radio frequency front end including a filter configured to filter a radio frequency signal End and an antenna in communication with the radio frequency front end; Including, the filter includes a first subfilter juxtaposed with a second subfilter; the first sub-filter includes a first elastic resonator and a first inelastic passive component; The second sub-filter includes a second elastic resonator and a second inelastic passive component. Multiplexer.

23. 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 receiver. A multiplexer that contains a dynamic component.

24. The plurality of filters includes the first filter, a second filter, and a third filter.

24. The multiplexer of claim 23.

25. the first filter is a first bandpass filter having a first passband; 25. The method of claim 24, wherein the second filter is a second bandpass filter having a second passband. Multiplexer.

26. The third filter has a stop band that includes the first pass band and the second pass band.

26. The multiplexer of claim 25, which is a band-stop filter.

27. 24. The multiplexer of claim 23, wherein the shared filter is a high pass filter.

28. 28. The multiplexer of claim 27, wherein the radio frequency filter is a low pass filter.

29. 24. The multiplexer of claim 23, wherein the shared filter is an inelastic LC filter.

30. The shared filter includes a plurality of second elastic resonators and an LC component. 23 multiplexers.

31. The inelastic passive component is arranged in parallel with a first elastic resonator of the elastic resonators.

24. The multiplexer of claim 23, comprising an inductor.

32. The elastic resonator is mounted on an elastic resonator die; The inelastic passive component is an inductor external to the elastic resonator die; a capacitor external to the elastic resonator die; 24. The multiplexer of claim 23, comprising:

33. A second filter of the plurality of filters includes a plurality of second elastic resonators and a second inelastic passive resonator.

24. The multiplexer of claim 23 comprising the component.

34. the first filter having a first passband; the second filter having a second passband; Both the first passband and the second passband are in the frequency range of 2 GHz to 5 GHz.

34. The multiplexer of claim 33, which is within a wavenumber range.

35. the first filter having a first passband; the second filter having a second passband; Both the first passband and the second passband are in the frequency range of 2 GHz to 3 GHz.

34. The multiplexer of claim 33, which is within a wavenumber range.

36. 24. The multiplexer of claim 23, wherein the multiplexer is arranged as a quadplexer. 。

37. 1. A wireless communication device, comprising: The antenna, a multiplexer in communication with the antenna; Including, The multiplexer includes: 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. A wireless communication device including a filter.

38. A second filter of the plurality of filters includes a plurality of second elastic resonators and a second inelastic passive resonator.

40. The wireless communication device of claim 37, comprising a wireless communication component.

39. The wireless communication device supports carrier aggregation at the common node. It is designed to the carrier aggregation includes a first carrier and a second carrier; the first carrier is within a first passband of the first filter; The second carrier is outside the first passband and the second passband of the second filter.

40. The wireless communication device of claim 38.

40. 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. and, 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 is a multiplexer including a plurality of second elastic resonators and a second LC circuit. sa.

41. The plurality of filters further includes a passband of the first filter and the second filter.

41. The multiplexer of claim 40, comprising a bandstop filter having a stopband.

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