Method for filtering radio frequency signals, multiplexer, and packaged module

Abstract

To provide a multiplexer, a filter assembly and a wireless device including an elastic wave filter.SOLUTION: A quadplexer 20" being a multiplexer includes acoustic wave filters coupled to a common node COM. A first SAW filter of the acoustic wave filters includes acoustic wave resonators of type A and a series acoustic wave resonator of type B coupled between the acoustic wave resonators of type A and the common node. In some embodiments, the acoustic wave resonators of type A are surface acoustic wave (SAW) resonators 21"-24", and the series acoustic wave resonator of type B is a bulk acoustic wave (BAW) resonator 25".SELECTED DRAWING: Figure 2C

Description

[Technical Field]

[0001] TECHNICAL FIELD The present disclosure relates to an acoustic wave filter.

[0002] Cross-reference to priority application This application is a joint application of "Hybrid SAW / BAW Multi-Phase Device" filed on October 28, 2016. U.S. Provisional Patent Application No. 62 / 414,253, filed November 23, 2016, entitled "LEXA" A patent application entitled "Hybrid Surface and Bulk Acoustic Wave Multiplexer" was filed in Provisional Patent Application No. 62 / 426,104, and the "Bullet" filed on November 23, 2016. A provisional patent entitled "Acoustic Wave Filters Including Resonant Surface Wave Resonators and Bulk Acoustic Wave Resonators" has been issued. The benefit of priority to each of these priority applications is claimed. The disclosure of which is incorporated herein by reference in its entirety. [Background technology]

[0003] An acoustic wave filter is a filter that includes multiple resonators arranged to filter radio frequency signals. Examples of acoustic wave filters include surface acoustic wave (SAW) filters and bulk acoustic wave (BWA) filters. Thin-film piezoelectric resonator (FBAR) filters are a type of BAW filter. Here is an example.

[0004] Acoustic wave filters can be implemented in radio frequency electronic systems. The filters in the radio frequency front end of the handset may include acoustic wave filters. The acoustic wave filters can be arranged as a duplexer. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] US Patent Application Publication No. 2009 / 0009263(A1) [Patent Document 2] US Patent Application Publication No. 2008 / 0042778(A1) [Patent Document 3] US Patent Application Publication No. 2013 / 0127565(A1) Summary of the Invention

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

[0007] One aspect of the present disclosure provides a first acoustic wave filter coupled to a common node, and a second acoustic wave filter coupled to the common node. and a second acoustic wave filter formed on the first acoustic wave filter. a plurality of surface acoustic wave resonators and a common node coupled between the surface acoustic wave resonators; and a series bulk acoustic wave resonator.

[0008] The surface acoustic wave resonator is a series of one series surface acoustic wave resonator connected to one series bulk acoustic wave resonator. The series surface acoustic wave resonator may be a one-port resonator. The surface acoustic wave resonator may be a double-mode surface acoustic wave resonator.

[0009] The first acoustic wave filter includes more than twice the number of surface acoustic wave resonators as the number of bulk acoustic wave resonators. The surface acoustic wave resonators may implement at least 70% of the resonators of the first acoustic wave filter. The surface acoustic wave resonators may implement at least 80% of the resonators of the first acoustic wave filter. That's fine.

[0010] The series bulk acoustic wave resonators are connected in common with all the surface acoustic wave resonators in the first acoustic wave filter. The surface acoustic wave resonator may include at least five resonators. .

[0011] The first acoustic wave filter further includes a shunt bulk acoustic wave resonator coupled to the common node. The shunt bulk acoustic wave resonator may be connected to an elastic surface via a series bulk acoustic wave resonator. It may be coupled to a surface wave resonator.

[0012] The second acoustic wave filter includes a second surface acoustic wave resonator and a common node between the second surface acoustic wave resonator and the common node. and a second series bulk acoustic wave resonator coupled between the first and second acoustic wave filters. The filter may include one or more suitable features of the first acoustic wave filter.

[0013] The filter assembly further comprises at least two additional acoustic wave filters coupled to a common node. The filter assembly may further include at least four filters coupled to a common node. The filter assembly may further include two additional acoustic wave filters coupled to the common node. The filter may include at least six additional acoustic wave filters.

[0014] The filter assembly may be arranged as a triplexer. The filter assembly may be arranged as a quadplexer. The filter assemblies may be arranged as a hexaplexer. The filter assembly may be arranged as a heptaplexer. may be arranged as

[0015] The common node may be an antenna node.

[0016] Another aspect of the present disclosure is a multiplexer including four acoustic wave filters coupled to a common node. The four acoustic wave filters are a first acoustic wave filter including a plurality of surface acoustic wave resonators. and one series bulk acoustic wave resonator coupled between the surface acoustic wave resonator and a common node. Includes vessels.

[0017] The multiplexers may be arranged as quadplexers. Multiplexers can be arranged as hexaplexers. The multiplexer can be arranged as a heptaplexer. The diplexers may be arranged as octuplexers.

[0018] The surface acoustic wave resonator is a series of one series surface acoustic wave resonator connected to one series bulk acoustic wave resonator. The series surface acoustic wave resonator may be a one-port resonator. The surface acoustic wave resonator may be a double-mode surface acoustic wave resonator.

[0019] The surface acoustic wave resonators may implement at least 70% of the resonators of the first acoustic wave filter. The surface acoustic wave resonators may implement at least 80% of the resonators of the first acoustic wave filter. At least 70% of the resonators in the multiplexer may be surface acoustic wave resonators. At least 80% of the resonators in the plexer may be surface acoustic wave resonators.

[0020] The series bulk acoustic wave resonators are connected in common with all the surface acoustic wave resonators in the first acoustic wave filter. The surface acoustic wave resonator may include at least five resonators. .

[0021] The first acoustic wave filter further includes a shunt bulk acoustic wave resonator coupled to the common node. The shunt bulk acoustic wave resonator may be connected to an elastic surface via a series bulk acoustic wave resonator. It may be coupled to a surface wave resonator.

[0022] The four acoustic wave filters each include a plurality of second surface acoustic wave resonators and a second surface acoustic wave resonator. and a second series bulk acoustic wave resonator coupled between the common node. The second acoustic wave filter may include one or more suitable features of the first acoustic wave filter. The four acoustic wave filters also include a plurality of third surface acoustic wave resonators and the third surface acoustic wave resonators. a third series bulk acoustic wave resonator coupled between the surface wave resonator and the common node; The third acoustic wave filter may include a suitable characteristic of the first acoustic wave filter. The four acoustic wave filters may also include a plurality of fourth surface acoustic wave resonators and the a fourth series bulk acoustic wave resonator coupled between the fourth surface acoustic wave resonator and the common node; The fourth acoustic wave filter may include a fourth acoustic wave filter including a suitable The invention may include one or more of the following features:

[0023] Another aspect of the present disclosure is a packaged module including one or more first dies and one second die. The one or more first dies are configured to include a first group of surface acoustic wave resonators and a second group of surface acoustic wave resonators. The first group of surface acoustic wave resonators includes a first acoustic wave front coupled to a common node. The second die contains one series bulk acoustic wave resonator. The surface wave resonator and the series bulk acoustic wave resonator are coupled to a common node to form a second acoustic wave filter. The series bulk acoustic wave resonators are connected between the second group of surface acoustic wave resonators and the common node. is combined with

[0024] The packaged module further includes a multi-throw switch coupled to the first filter and the second filter. The multi-throw switch may have a single throw coupled to a common mode. The multi-throw switch has a first throw coupled to the first acoustic wave filter and a second throw coupled to the second acoustic wave filter. In some examples, the packaged module may further include a second input. , and at least one of the first acoustic wave filter and the second acoustic wave filter via a multi-throw switch. The power amplifier may include a power amplifier configured to provide a radio frequency signal to the

[0025] The packaged module may further include a power amplifier.

[0026] The packaged module may include the acoustic wave filters and / or multiplexers described herein. The present invention may include one or more suitable features of the present invention.

[0027] Another aspect of the present disclosure is a method for transmitting a radio frequency signal to a wireless device, the method comprising: receiving a radio frequency signal from an antenna configured to receive a radio frequency signal; and a multiplexer in communication with the common The four acoustic wave filters are coupled to the node. The four acoustic wave filters are configured to include a plurality of acoustic filters. a first acoustic wave filter including a surface acoustic wave resonator, and a coupling between the surface acoustic wave resonator and a common node; and one series bulk acoustic wave resonator.

[0028] The wireless communication device may be configured as a mobile phone.

[0029] The wireless communication device further includes a frequency multiplier coupled between the common node and the antenna. The frequency multiplexing circuit may include a diplexer or triplexer. It can be used as a plexor.

[0030] The wireless communication device further includes an antenna switch coupled between the common node and the antenna. It may include

[0031] The radio frequency signal may be a carrier aggregation signal.

[0032] The antenna may be a primary antenna. The antenna may be a diversity antenna. Each of the four acoustic wave filters is a receiving filter that communicates with the diversity antenna. It may be configured as a

[0033] The wireless communication device may include any of the acoustic wave filters described herein, any of the multiplexers, any of the packaged modules described herein, or Any combination of one or more of these suitable features may be included.

[0034] Another aspect of the present disclosure is a method for detecting a frequency band including a first acoustic wave filter having a passband and coupled to a common node. The filter assembly also includes a second filter coupled to the common node. The second acoustic wave filter includes a plurality of acoustic wave resonators of a first type and a second type. A plurality of acoustic wave resonators of one type and one series resonator of a second type coupled between a common node The second type of series acoustic wave resonator is a series acoustic wave resonator of the first acoustic wave filter. In the passband, it has a higher quality factor than the first type of the plurality of acoustic wave resonators.

[0035] The first type of multiple acoustic resonators may be multiple surface acoustic wave resonators, and the second type of A series acoustic wave resonator may be a bulk acoustic wave resonator. The acoustic resonator may be a plurality of non-temperature compensated surface acoustic wave resonators, one of a second type in series. The acoustic wave resonator may be a temperature compensated surface acoustic wave resonator.

[0036] The first type of acoustic wave resonators of the second acoustic wave filter include: At least 70% of the resonators may be of a first type. a first die including a series acoustic wave resonator of a second type; and a second die including one series acoustic wave resonator of a second type. At least two of the first type elastic resonators are connected to one second type elastic resonator in series. It may be connected in series with the oscillator.

[0037] The filter assembly further includes a third acoustic wave filter coupled to the common node and a second acoustic wave filter coupled to the common node. and a fourth acoustic wave filter coupled to the series node. The resonator has a characteristic that the resonator has a larger resonant frequency than the plurality of first-type acoustic wave resonators in the pass band of the third acoustic wave filter. A second type of series acoustic wave resonator may have a higher quality factor than a fourth acoustic wave filter. and a first type of acoustic wave resonator having a higher quality factor in the passband of the filter than the first type of acoustic wave resonators. do.

[0038] Another aspect of the present disclosure is a multiplexer including an acoustic wave filter. a first acoustic wave filter coupled to a common node; and three other acoustic wave filters coupled to the common node. The first acoustic wave filter includes a plurality of first type acoustic wave resonators and a second type of acoustic wave resonator coupled between a plurality of the first type of acoustic wave resonators and a common node; The three other acoustic wave filters each have a corresponding passband. One series acoustic wave resonator of the second type is connected to the corresponding passbands of the three other acoustic wave filters. Each of the first type acoustic wave resonators has a higher quality factor than the first type acoustic wave resonators.

[0039] The first type of multiple acoustic resonators may be multiple surface acoustic wave resonators, and the second type of A series acoustic wave resonator may be a bulk acoustic wave resonator. The acoustic resonator may be a plurality of non-temperature compensated surface acoustic wave resonators, one of a second type in series. The acoustic wave resonator may be a temperature compensated surface acoustic wave resonator.

[0040] At least one of the three other acoustic wave filters includes a plurality of second acoustic wave resonators of the first type. and a second type of resonator coupled between the first type of second acoustic wave resonators and a common node. and one second series acoustic wave resonator.

[0041] The multiplexer may be a quadplexer. The multiplexer may further include a common node. The amplifier may include two additional acoustic wave filters coupled to the amplifier.

[0042] Another aspect of the present disclosure is a method for processing a carrier aggregation signal. A first acoustic wave filter having a first band coupled to the antenna port performs carrier aggregation. The carrier aggregation signal includes filtering the carrier aggregation signal. A first radio frequency carrier in one passband and a second radio frequency carrier in a second passband. The method further includes a second carrier coupled to the antenna port and having a second passband. filtering the carrier aggregation signal with an acoustic wave filter. The second acoustic wave filter includes a plurality of first-type acoustic wave resonators and a plurality of first-type acoustic wave filters. and a second type of series acoustic wave resonator coupled between the acoustic wave resonator and the antenna port. The second type of series acoustic wave resonator is more efficient than the first type of series acoustic wave resonators. Has low load losses.

[0043] The method further includes transmitting carrier aggregation signals via an antenna coupled to the antenna port. The method may further include receiving an antenna coupled to the antenna port. The method may further include transmitting the carrier aggregation signal via the antenna. The first acoustic wave filter and the second acoustic wave filter are connected to a common node via a multi-throw switch. The multi-throw switch may include combining the first acoustic wave filter and the second acoustic wave filter. The first acoustic wave filter and the second acoustic wave filter can be coupled to a common node. At the same time, they are coupled to a common node.

[0044] The first type of multiple acoustic resonators may be multiple surface acoustic wave resonators, and the second type of A series acoustic wave resonator may be a bulk acoustic wave resonator. The acoustic resonator may be a plurality of non-temperature compensated surface acoustic wave resonators, one of a second type in series. The acoustic wave resonator may be a temperature compensated surface acoustic wave resonator. The resonator may be on a different die than one series acoustic wave resonator of the second type.

[0045] For purposes of summarizing this disclosure, certain aspects, advantages and novel features of the innovation are set forth herein. Not all such advantages may be realized in any particular embodiment. Therefore, the present invention is not achieved by any of the methods taught herein. to achieve an advantage or group of advantages without necessarily achieving any other advantages taught or suggested herein. , can be embodied or performed in a manner that achieves or optimizes. [Brief explanation of the drawings]

[0046] Embodiments of the present disclosure will now be described, by way of non-limiting example, with reference to the accompanying drawings, in which:

[0047] [Figure 1] FIG. 1 is a schematic diagram of a quadplexer. [Figure 2A] FIG. 2 is a schematic diagram of an acoustic wave resonator of a quadplexer according to one embodiment. [Figure 2B] FIG. 2 is a schematic diagram of an acoustic wave resonator of a quadplexer according to one embodiment. [Figure 2C] FIG. 2 is a schematic diagram of an acoustic wave resonator of a quadplexer according to one embodiment. [Figure 3] FIG. 1 is a schematic diagram of a quadplexer. [Figure 4] FIG. 2 is a schematic diagram of an acoustic wave resonator of a hexaplexer according to one embodiment. [Figure 5] FIG. 2 is a schematic diagram of an acoustic wave resonator of a multiplexer according to an embodiment. [Figure 6] FIG. 2 is a schematic diagram of an acoustic wave resonator of a multiplexer according to an embodiment. [Figure 7] 1 is a schematic diagram of a radio frequency system including a quadplexer coupled to an antenna via a diplexer. [Figure 8] 1 is a schematic diagram of a radio frequency system including a quadplexer coupled to an antenna. [Figure 9] 1 is a schematic diagram of a radio frequency system including an antenna coupled to a receive path via a multiplexer; [Figure 10A] 1 is a schematic diagram of a radio frequency system including a multiplexer in the signal path between a power amplifier and an antenna. [Figure 10B]FIG. 1 is a schematic diagram of another radio frequency system including a multiplexer in the signal path between a power amplifier and an antenna. [Figure 10C] FIG. 2 is a schematic diagram of an acoustic wave resonator of a multiplexer according to an embodiment. [Figure 11] 11A, 11B, and 11C are block diagrams illustrating different dies including acoustic wave resonators of a filter according to embodiments described herein. [Figure 12] FIG. 1 is a schematic block diagram of a module including a power amplifier, a switch, and a filter according to one or more embodiments. [Figure 13] FIG. 1 is a schematic block diagram of a module including a power amplifier, a switch, and a filter according to one or more embodiments. [Figure 14] FIG. 1 is a schematic block diagram of a module including a power amplifier, a switch, a filter according to one or more embodiments, and an antenna switch. [Figure 15] 1 is a schematic block diagram of a wireless communication device including a filter according to one or more embodiments. DETAILED DESCRIPTION OF THE INVENTION

[0048] 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 the drawings referred to in this description, It is understood that like reference numbers may indicate identical or functionally similar elements. The elements illustrated are not necessarily to scale. The embodiments may include more elements than are illustrated in the drawings and / or may include more elements than are illustrated in the drawings. Additionally, some embodiments may include features from more than one drawing. Any suitable combination of features may be incorporated.

[0049] Service providers and handset manufacturers to increase cellular data bandwidth Many operators implement carrier aggregation (CA), where the data transmission and / or reception purposes, multiple frequency bands may be used simultaneously by one handset. The size and cost of the handset dictate that manufacturers use as few devices as possible. Many CA scenarios involve multiple bands in one, encouraging the use of separate antennas. can benefit from sharing antennas.

[0050] The traditional single-band (non-CA) case involves at most two bandpass filters connected to the antenna. Filters (one transmit filter and one receive filter, or a combination of these filters can be duplexed) While CA systems include a number of antennas (which may be referred to as "multi-hop" antennas), all connected to a common antenna node According to the CA specification, these filters are: Quadplexer (four filters), Pentaplexer (five filters), Hexaplexer It can be configured as a duplexer (6 filters), an octuplexer (8 filters), etc. The general term used here for all of these multiple filter configurations is multi-filter. It is Plexor.

[0051] When multiple such filters share a common connection, each filter is able to presents a high impedance to all other filters in the passband This ensures that the mutual loading of all filters is kept to a minimum or In this context, "load" refers to the other filters of the multiplexer. One filter causes unwanted signal dissipation and / or reflections by one or more of the filters. This refers to the increased insertion loss through the

[0052] For example, Band X and Band Y are two frequencies that are connected together and share a common antenna. Consider a duplexer containing two filters for several bands. The duplexer acts as a power divider. Here, the amount of power passing through each path is calculated by each of the two filters. The total filter is ideal and can be determined by the frequency dependent impedance presented by the filter. If present, each of these will provide a perfect 50 ohm antenna impedance within the corresponding passband. while presenting an open circuit impedance within the passband of the other filter of the duplexer. In such a case, for example, a signal in frequency band X at an antenna port is given by 50 ohms through the band X filter and into open circuit through the band Y filter In other words, in this ideal scenario, 100% of the signal's power passes through the Band X filter. The signal in band Y is also affected by the voltage drop. 100% of the force flows through the band Y filter, and 0% flows through the band X filter. On the other hand, if the filter is very poor, it will present 50 ohms at all frequencies. In the Band X example, the signal now has a 50 ohm The path is presented to both filters. Therefore, the power is 5 Hz to the band X filter. 0% goes to the band Y filter and 50% goes to the band X filter. The insertion loss of the duplexer increases by approximately 3 dB. will have a load loss of 3 dB compared to the individual filters.

[0053] As can be seen, the overall load loss increases as the number of coupled filters in the multiplexer increases. For example, an octaplex containing such a nonideal filter If it is a wire, it will have an additional 9 dB load loss. RF) filters are not as good as the ideal filter described above, which has no load losses. Although it does not perform as well as a 50 ohm impedance in all frequency scenarios, The magnitude of the out-of-band impedance is a relatively strong function of the filter design. It can be, but this can also depend on the filter technology.

[0054] Both surface acoustic wave (SAW) and bulk acoustic wave (BAW) technologies are used in RF filters. are ubiquitously used for However, a side-by-side comparison shows that the world-class BAW Filters are generally characterized by their low S The difference in load loss is relatively small for a duplexer. Although minor, it can become increasingly important as the number of CA filters combined increases. For adders, BAW filters offer a gain of 0.5 dB or more compared to their SAW filter counterparts. Hexaplexers and octuplexers often have a 1.0 dB load loss benefit. In contrast, the difference is still significantly large.

[0055] Unfortunately, despite their high performance, BAW filters are inferior to SAW filters. BAW filters are generally superior to SAW filters in that they can have significant disadvantages, namely cost. Therefore, SAW technology is used whenever possible. There is substantial motivation to use SAW technology in the current cellular frequency bands. However, it is suitable for making a duplexer that covers almost all wavelengths. The CA coupling used makes the cost / performance tradeoff between the two technologies less clear. For more complex connections such as hexaplexers and octuplexers, S AW performance typically deteriorates to the point that it is not an option despite the cost savings .

[0056] Improved load losses through careful control of filter topology and / or design parameters However, ultimately, load losses are a cost to the in-band energy Spurs due to the finite reflection bandwidth of the Bragg reflector used to confine the May be limited by acoustic modes and out-of-band acoustic energy radiation outside the resonator. / Like many quadplexers or pentaplexers, the performance tradeoffs are somewhat ambiguous. For such scenarios, the existing RF switch in the cellular front-end module can be , used to make so-called "switched multiplexers" or "switchplexers" In this case, the common CA coupling can be either a traditional single-band configuration or a CA coupling. This is facilitated by a multi-pole, multi-throw RF switch that allows the use of filters in CA mode. At , the load losses are slightly worse than those of a hardwired multiplexer (still In non-CA mode, the load loss is This is no longer an issue. If a given cellular handset spends the majority of its total usage time in non-CA mode, Therefore, the performance degradation is mainly limited to CA mode (compared to BAW) and is not suitable for such cellular handsets. This will favor inexpensive SAW solutions in semiconductor device sets. Although sophisticated, the multiplexing solution is not a permanent solution. This can be significantly more difficult to implement than the traditional LTE version. It may also involve complicated and expensive calibration routines. As this increases, SAW technology is expected to have difficulty meeting the specified CA specifications. are.

[0057] Certain aspects of the present disclosure combine both SAW and BAW technologies into one system. The above-mentioned problem is addressed by the out-of-band impedance presented by the multiplexer. Since the impedance can be determined primarily by the one or two resonators closest to the antenna connection, These particular resonators may be fabricated using BAW technology. Roughly speaking, such BAW resonators comprise 10 to 30% of the total number of resonators in a filter. Most or all of the remaining 70-90% of the resonators in the filter are inexpensive. It can be implemented using SAW technology. A multiplexer can be roughly % of the resonators in the multiplexer are BAW resonators, and most of the remaining 70-90% of the resonators in the multiplexer are All may be SAW resonators. Thus, certain embodiments may be all B It has comparable load losses to AW solutions, but is predominantly SAW-based. This may include a hexaplexer or octuplexer, which are therefore fairly low cost. That is, according to some embodiments, the system may include: a second number of SAW resonators provided near the antenna connection and located away from the antenna connection; The multiplexer includes a multiplexer for the first number, where the second number is greater than the first number.

[0058] Some embodiments utilize the load loss advantages of the all-BAW CA multiplexer. Combined with many of the cost advantages of SAW solutions.

[0059] One aspect of the present disclosure is a filter assembly including a plurality of acoustic wave filters coupled to a common node. The first acoustic wave filter of the plurality of acoustic wave filters is a surface acoustic wave resonator. and a common mode surface acoustic wave resonator arranged in series between all the surface acoustic wave resonators of the first acoustic wave filter and the common mode surface acoustic wave resonator. The other of the plurality of acoustic wave filters includes a bulk acoustic wave resonator. One or more of the multiple elastic resonators are coupled to a common node via a single series bulk acoustic wave resonator. The first acoustic wave may include a surface acoustic wave resonator. The bulk acoustic wave resonator may be, for example, a FBAR. The filter may also include a shunt bulk acoustic wave resonator. Duplexer, Triplexer, Quadplexer, Pentaplexer, Hexaplexer, The multiplexers may be arranged as subplexers, octuplexers, etc.

[0060] Another aspect of the present disclosure is a multiplexer including at least four filters connected to a common node. At least one of the four filters has at least a first type resonator and and a second type of resonator, wherein the second type of resonator is more efficient than the first type of resonator. Low load losses. In one of the four filters, all of the first type resonators are are coupled to the common node via a second type of series resonator. The second type of resonator is FB The first type of resonator may be a SAW resonator, while the second type may be a BAW resonator such as an AR.

[0061] The antenna is configured to receive a radio frequency signal. The multiplexer is connected to the antenna. The multiplexer includes four acoustic wave filters coupled to a common node. The first acoustic wave filter of the two acoustic wave filters includes a plurality of surface acoustic wave resonators and the surface acoustic wave resonators. and a bulk acoustic wave resonator in series between the diplexer and the common node. or a frequency multiplexing circuit such as a triplexer, and / or an antenna switch A switch may be coupled between the multiplexer and the antenna. In some applications, the antenna may be It may be a diversity antenna, and the four filters may be receive filters. The plexer may include one or more additional acoustic wave filters coupled to the common node.

[0062] Another aspect of the present disclosure is a packaged module including one or more first dies and one second die. One or more first dies include a plurality of SAW resonators. One second die includes a The acoustic wave filter includes one or more first BAW resonators coupled to a common node. The acoustic wave filter is mounted on a die and a second die via multiple acoustic wave resonators. The first acoustic wave filter of the inverter includes a plurality of SAW resonators and a common node. The acoustic wave filters include a quadplexer and a BAW resonator in series between the two. Arranged as multiplexers such as pentaplexers, hexaplexers, octaplexers, etc. The packaged module can also include a power amplifier, a band select switch, and It may include one or more antenna switches.

[0063] Another aspect of the present disclosure is a wireless communication device including an antenna and a multiplexer. The antenna is configured to filter radio frequency signals. The multiplexer includes four acoustic wave filters coupled to a common node. The first of the four acoustic wave filters comprises a plurality of surface acoustic wave resonators and a and one bulk acoustic wave resonator in series between the surface wave resonator and the common node. Frequency multiplexing circuits such as a triplexer or a triplexer, and / or an antenna The antenna switch may be coupled between the multiplexer and the antenna. In some applications, the antenna The antenna may be a diversity antenna, and the four filters may be receive filters. The multiplexer may include one or more additional acoustic wave filters coupled to the common node. FIG. 1 is a schematic diagram of a quadplexer 10. The quadplexer 10 has a common node. The common node COM is also called a common port. As illustrated, the quadplexer 10 includes a first transmit filter 12, a first receive filter 13, and a second receive filter 14. The quadplexer 10 includes a first filter 14, a second transmit filter 16, and a second receive filter 18. Each filter in the quadruple filter may be a bandpass filter, as shown. One or more of the filters in quadplexer 10 may be acoustic wave filters. All of the filters in the quadplexer 10 may be acoustic wave filters. may also include two types of acoustic wave resonators according to the principles and advantages described herein. For example, any filter in quadplexer 10 may be implemented in accordance with the principles and advantages described herein. It may include multiple SAW resonators and one or more BAW resonators.

[0064] FIG. 2A is a schematic diagram of multiple acoustic wave resonators of a quadplexer 20 according to one embodiment. The quadplexer 20 is an example of the acoustic wave device 10 of FIG. The crosstalk can be implemented according to the appropriate principles and advantages described with reference to FIG. 2A. In FIG. 2A, each filter of the quadplexer 20 is implemented with multiple acoustic wave resonators. Each of the exemplary acoustic wave resonators is a one-port resonator. the input and output of the resonator include an interdigital transducer electrode; These serve as opposing bus bars for the interdigital transducer electrodes.

[0065] The first acoustic wave filter of the quadplexer 20 is made up of SAW resonators 21, 22, 23 and 24. The second acoustic wave filter of the quadplexer 20 includes a SA resonator 4 and a BAW resonator 25. The quadplexer 2 includes W resonators 31, 32, 33, and 34 and a BAW resonator 36. The third acoustic wave filter 0 includes SAW resonators 41, 42, 43, 44, and 45, and a BAW resonator. The fourth acoustic wave filter of the quadplexer 20 includes SAW resonators 46 and 47. The resonator 51 includes resonators 51, 52, 53, 54, and 55, and a BAW resonator 56.

[0066] As shown in FIG. 2A, the series SAW resonators in the acoustic wave filter are The common node of the quadplexer can be connected via a capacitor. As shown in the figure, the series SAW resonators and shunt SAW resonators in the acoustic wave filter are The BAW resonators can be coupled to the common node of the quadplexer via a series of BAW resonators. A also includes at least four or at least five SAW resonators connected through a series BAW resonator. 1 shows that the common nodes of the quadplexers can be coupled via the .times. ...

[0067] In the acoustic wave filter illustrated in FIG. 2A, all the SAW resonators of each acoustic wave filter are , and are coupled to a common node via the series BAW resonators of the corresponding acoustic wave filters. This reduces the loading on common nodes compared to acoustic wave filters containing only multiple SAW resonators. As also shown in FIG. 2A, multiplexers and / or acoustic wave filters can be used. At least 70% of the resonators of the filter are SAW resonators, and the multiplexer and / or Other resonators of the acoustic wave filter may be implemented using BAW technology. By using mostly SAW resonators to achieve this, such acoustic wave filters can be made largely These filters can be cheaper than acoustic wave filters implemented entirely or entirely with BAW resonators.

[0068] FIG. 2A and some other embodiments such as FIGS. 4 to 6 show the SAW resonators and BAW While an example of a multiplexer including a resonator is illustrated, any suitable principle described herein may be used. The principles and advantages can be implemented by two different suitable types of resonators. For example, the filter of the multiplexer may include a plurality of acoustic wave resonators of a first type and a plurality of acoustic wave resonators of a second type. a second type of resonator coupled between a number of acoustic wave resonators and a common node of the multiplexer; and two series acoustic wave resonators.

[0069] The second type of resonator may have a lower load loss than the first type of resonator. Load losses may be due to unwanted signal dissipation and / or interference from one or more of the other filters in the multiplexer. Or it can refer to the loss associated with the increase in insertion loss through one filter caused by reflections. .

[0070] The second type of resonator may have higher out-of-band rejection than the first type of acoustic wave resonator. The second type of resonator may have a higher out-of-band quality factor than the first type of resonator. For example, the second type of resonator may be a resonator that is connected to the passband of at least one other filter of the multiplexer. The first type of acoustic wave resonator may have a higher quality factor in the high-frequency range than the first type of acoustic wave resonator. Due to the external quality factor, the second type of resonator has a lower energy dissipation than the first type of resonator. In a given application, it is possible to provide significant out-of-band rejection due to the loss of The second type of resonator has the following characteristics in the corresponding passbands of all the other filters of the multiplexer: The acoustic wave resonator may have a higher quality factor than the first type of acoustic wave resonators. The quality factor may represent the ratio of the power dissipated to the power received. The quality factor may be frequency dependent.

[0071] The second type of acoustic wave resonator is more expensive than the first type of acoustic wave resonator and has a better bandwidth. Two types of resonators can be implemented in acoustic wave filters to achieve out-of-band performance. This allows for out-of-band performance and cost to be achieved through a solution of relatively low cost and relatively high performance. The solution is balanced.

[0072] In the multiplexer 20 of FIG. 2A, the first type of resonator is a SAW resonator, and the second type is a The two types of resonators are BAW resonators. Another example of a lexer is described with reference to Figures 2B and 2C.

[0073] FIG. 2B is a schematic diagram of multiple acoustic wave resonators of a quadplexer 20′ according to one embodiment. The quadplexer 20' includes two types of SAW resonators: Type A and Type B. The quadplexer 20' includes a type A SAW and a type B SAW. Similar to lexer 20, but with a second BAW resonator instead of the multiple BAW resonators of quadplexer 20. 1, except that multiple SAW resonators of the same type are implemented in quadplexer 20'. The second type of SAW resonator, i.e., Type B SAW, is a SAW resonator of the first type, i.e., That is, it has the same advantages as the BAW resonator compared to the type A SAW. For example, the second type The SAW resonator of type B, i.e., the first type SAW resonator, i.e., the Lower load loss and / or better out-of-band rejection and / or higher out-of-band quality than SAW of A On the other hand, the second type of SAW resonator, i.e., Type B SAW, can have a coefficient of They can be more expensive to implement than Type 1 SAW resonators, i.e., Type A SAWs. Therefore, the filter topology shown in FIG. 2B has relatively low cost and relatively high performance. Cost and performance can be balanced to provide a solution.

[0074] In some examples, the first type of SAW resonator, i.e., Type A SAW, is referred to as a standard S The SAW resonator may be a second type SAW resonator, i.e., a type B SAW, and the temperature compensation It may be a SAW (TCSAW) resonator. Standard SAW resonators may be non-temperature compensated. The TCSAW resonator may include a temperature compensating layer having a positive temperature coefficient of frequency. The SAW resonator is a standard SAW resonator with the addition of silicon dioxide covering the IDT electrodes. It is possible.

[0075] According to certain embodiments, the second type of SAW resonator, or Type B SAW, is typically Equivalent or superior to conventional BAW resonators with superior temperature characteristics Such a second type of SAW resonator may be a SAW resonator having relatively high characteristics. It may have a high quality factor, a relatively low temperature coefficient of frequency, and a relatively high heat dissipation. The second type of SAW resonator has an increased quality factor and frequency temperature stability compared to standard SAW resonators. The second SAW resonator may have a multi-layer substrate, which may have a lower coefficient. a functional layer (e.g., sapphire, alumina, SiN, or AlN) covering a high-rate layer (e.g., sapphire, alumina, SiN, or AlN) covering a high-temperature layer (e.g., sapphire, alumina, SiN, or AlN) A piezoelectric layer (e.g., lithium niobate (L)) overlays a piezoelectric layer (e.g., SiO, SiON, or TaO). The substrate may include an IDT electrode on a multilayer substrate overlying a silicon dioxide (CuO) or lithium tantalate (LT). For example, the second type of SAW resonator has an IDT electrode on an LT / SiO2 / AlN / Si substrate. The second type of SAW resonator may include an IHP (Incredib) by Murata Manufacturing Co. This quad preamplifier is suitable as a high performance SAW resonator. The second type of SAW resonator in quadplexer 20' One type of SAW resonator can be a non-temperature compensated SAW resonator or a temperature compensated SAW resonator. This can be done.

[0076] The first acoustic wave filter of the quadplexer 20' includes a plurality of first type SAW resonators 2 1', 22', 23' and 24' and one SAW resonator 25' of the second type. The second acoustic wave filter of the quadplexer 20' includes a plurality of first type SAW resonators 31. ', 32', 33' and 34', and one SAW resonator 36' of the second type. The third acoustic wave filter of the addplexer 20' includes a plurality of first-type SAW resonators 41'. , 42', 43', 44' and 45', and a second type of multiple SAW resonators 46' and 4 The fourth acoustic wave filter of the quadplexer 20' includes a first type of multiple S AW resonators 51', 52', 53', 54' and 55' and one SAW resonator of the second type. and oscillator 56'.

[0077] FIG. 2C is a schematic diagram of multiple acoustic wave resonators of a quadplexer 20″ according to one embodiment. The quadplexer 20'' has two types of resonators: Type A and Type B. The quadplexer 20'' includes a resonator of type B and a resonator of type C. Similar to the lexer 20 and quadplexer 20' of FIG. 2B, but The difference is that the two types of resonators in ' and ' may be any suitable type of resonator. The first type of resonator offers similar advantages to those that BAW resonators have over SAW resonators. For example, a second type of resonator may have a first type of resonator. lower load loss, better out-of-band rejection, higher out-of-band quality factor, etc., or any of these. It may have any of the advantages mentioned above for the appropriate combination. The resonator can be more expensive to implement than the first type of resonator. The filter topology provides a relatively low cost and relatively high performance solution. Cost and performance can be balanced to provide

[0078] The first filter of the quadplexer 20'' comprises a plurality of resonators 21'', 2 2'', 23'', and 24'', and one resonator of the second type 25''. The second filter of the duplexer 20'' comprises a plurality of resonators 31'', 32'', of the first type, 33" and 34" and one resonator of the second type 36". The third filter of the filter 20'' comprises a plurality of resonators 41'', 42'', 43'' of the first type. , 44'' and 45'' and a plurality of resonators of a second type 46'' and 47''. The fourth filter of the quadplexer 20″ comprises a plurality of resonators 51″, 52 of the first type. '', 53'', 54'', and 55'', and one resonator 56'' of the second type. The illustrated resonators of quadplexer 20'' may all be acoustic wave resonators.

[0079] FIG. 3 is a schematic diagram of a quadplexer 60. The hexaplexer 60 has a common node. 6. As illustrated, the hexaplexer 60 includes six filters connected to the first COM. 1. Transmit filter 12, 1. Receive filter 14, 2. Transmit filter 16, 2. Receive filter 18, a third transmit filter 62, and a third receive filter 64. The filter may be a bandpass filter as shown in the example. One or more of the filters in the hexaplexer 60 may be acoustic wave filters. Any of the filters in quadplexer 60 may be implemented using the principles and methods described herein. The quadplexer 60 may include two types of acoustic wave resonators according to their respective advantages. Any filter may be constructed using multiple SAW resonators and a single filter in accordance with the principles and advantages described herein. The above BAW resonators may be included.

[0080] FIG. 4 is a schematic diagram of an acoustic wave resonator of a hexaplexer 70 according to one embodiment. The hexaplexer 70 is an example of the hexaplexer 60 of FIG. 3. As illustrated in FIG. Each filter in the multiplexer 70 is implemented by an acoustic wave resonator. , can be implemented in accordance with the appropriate principles and advantages described with reference to FIG. A specific filter in a multiplexer is designed to meet the design specifications for a given application. The acoustic wave filter in FIG. 4 is an example of such a filter. show.

[0081] The first acoustic wave filter of the hexaplexer 70 includes a BAW resonator 71 and a SAW resonator 71. , 72, 73, 74, 75, 76, 77, 78, and 79. The first acoustic wave filter , may be a transmission filter such as the first transmission filter 12 in FIG. occupies 8 / 9 of the acoustic wave resonators of the first acoustic wave filter.

[0082] The second acoustic wave filter of the hexaplexer 70 includes a BAW resonator 81 and a SAW resonator 82. The second acoustic wave filter includes a receiving filter such as the first receiving filter 14 in FIG. The exemplary SAW resonator 83 is a double-mode SAW (DMS) resonator. This is also called a coupled resonator filter (CRF). DMS resonators can be implemented in low power filters such as Therefore, the DMS resonator can be used as a common antenna node. At least one series acoustic wave capacitor that protects against the relatively high power present at the communication node COM. There must be an oscillator.

[0083] The third acoustic wave filter of the hexaplexer 70 includes a BAW resonator 91 and a SAW resonator 92. , 93, 94, 95, 96, 97, and 98. The third acoustic wave filter is the second acoustic wave filter shown in FIG. It may be a transmit filter such as transmit filter 16 .

[0084] The fourth acoustic wave filter of the hexaplexer 70 includes a BAW resonator 101 and a SAW resonator 102. The fourth acoustic wave filter includes the second receiving filter 18 in FIG. The receiving filter may be as follows.

[0085] The fifth acoustic wave filter of the hexaplexer 70 includes BAW resonators 111 and 112 and an SA W resonators 113, 114, 115, 116, 117, 118 and 119 are included. The passive filter may be a transmit filter such as the third transmit filter 62 in FIG. The BAW filter uses shunt and series BAW resonators in common with the multiplexer. The shunt BAW resonator 112 can be coupled to the node COM. The resonator 111 is coupled to the side opposite to the SAW resonator of the fifth acoustic wave filter.

[0086] The sixth acoustic wave filter of the hexaplexer 70 includes SAW resonators 122, 123, 124, and The sixth acoustic wave filter includes a receive filter such as the third receive filter 64 in FIG. The sixth acoustic wave filter may be a filter in which one or more of the filters of the multiplexer are multiplexed. This example shows that it can be implemented using only a SAW resonator.

[0087] FIG. 5 is a schematic diagram of an acoustic wave resonator of multiplexer 130 according to one embodiment. The multiplexer may include any suitable number of acoustic wave filters. The filters are quadplexers with four filters, pentaplexers with five filters, and a hexaplexer with six filters, an octaplexer with eight filters, etc. In some examples, the multiplexer 130 may be connected to a common node COM. The multiplexer 130 may include 2 to 16 acoustic wave filters. The filter may include any suitable combination of receive and / or transmit filters. Each input / output (I / O) port of a wave filter can be an input for a transmit filter or a Each acoustic wave filter is connected to a common node via a series BAW resonator. For example, the first acoustic wave filter of the multiplexer 130 may include a coupled SAW resonator. The converter includes SAW resonators 132, 133, 134, and 135 and a BAW resonator 136. Here, SAW resonators 132, 133, 134 and 135 are all series BAW resonators. 136. For example, the first The N acoustic wave filter includes SAW resonators 142, 143, 144, and 145, and a BAW resonator 146, where SAW resonators 142, 143, 144 and 145 all include The two are coupled to a common node COM via a series BAW resonator 146 .

[0088] FIG. 6 is a schematic diagram of an acoustic wave resonator of a multiplexer 150 according to one embodiment. Multiplexer 150 is similar to multiplexer 130 of FIG. 5, except that 6. The difference is that 150 includes an acoustic wave filter implemented with only a plurality of SAW resonators. One or more acoustic wave filters of the multiplexer include SAW resonators, but BAW resonators For example, the first acoustic wave filter of the multiplexer 150 does not include , SAW resonators 152, 153, 154, 155 and 156, but all BAW resonators The multiplexer 150 also includes a series BAW resonator coupled to a common node. It includes one or more acoustic wave filters with multiplexed SAW resonators. The Nth acoustic wave filter of the filter 150 includes SAW resonators 162, 163, 164, and 165. and a BAW resonator 166. Here, the SAW resonators 162, 163, 164, and 165 are all coupled to a common node COM via a series BAW resonator 166.

[0089] Any suitable number of BAW resonators may be coupled between the SAW resonators of the filter and a common node. For example, a series BAW resonator and one or more other series BAW resonators and and / or one or more shunt BAW resonators connected to a common node of the SAW resonators of the filter. It can be joined in between.

[0090] The multiplexers described herein can be implemented in a variety of radio frequency systems. Radio frequency signals range from about 30 kHz, for example, from about 450 MHz to 6 GHz. The present invention can process signals having frequencies ranging from 100 Hz to 300 GHz. Some radio frequency systems including multiplexers that follow the principles and advantages described herein are The carrier aggregation system is configured to process carrier aggregation signals. In radio frequency systems, multiple filters can be arranged as a multiplexer to provide a common access The multiplexers and / or filters described herein may be connected to an antenna node. Any suitable principle and advantage of the radio frequency system can be implemented. Some examples are described below.

[0091] 7, 8, 9, 10A, and 10B illustrate exemplary radio frequency systems according to certain embodiments. 1 is a schematic block diagram of a multiplexer in these radio frequency systems. A BAW resonator coupled between one or more SAW resonators and a common node in an acoustic wave filter. As a result of having a resonator, load loss can be reduced. Implementing more than one SAW resonator also allows for the implementation of BAW elements in most cases. It is also possible to reduce costs compared to similar acoustic wave filters. The principles and advantages of filters including BAW resonators are as follows: This may be applicable to filters that include passive resonators. Each filter in the multiplexer may be a bandpass filter.

[0092] FIG. 7 shows a quadplexer coupled to an antenna 177 via a diplexer 176. 7 is a schematic diagram of a radio frequency system 170 including a first quad-plate The second quad includes acoustic wave filters 12, 14, 16, and 18. The diplexer includes acoustic wave filters 172, 173, 174, and 175. 76 is a circumferential view of the radio frequency signal propagating between the exemplary quadplexer and antenna 177. It can play a role in wavenumber multiplexing.

[0093] FIG. 8 illustrates a radio frequency system 1800 including a quadplexer coupled to an antenna 177. 0. Figure 8 shows how multiplexers can be used in some applications. , an intervening frequency multiplexing circuit (e.g., a diplexer or triplexer), For example, a carrier aggregation signal can be connected to an antenna. When two carriers are relatively close in frequency, a diplexer or triplexer is , which may be relatively difficult and / or expensive to implement and / or have relatively high losses. In such a situation, multiple filters can be connected to a common node as a multiplexer. As an example, such a multiplexer can be used to connect band 2 5 and Band 66 transmit and receive filters. As shown in Figure 8, the multiplexer can be , can be connected to an antenna without an intervening switch or frequency multiplexing circuit. For example, a carrier aggregation system with only two carrier aggregation bands can A mobile phone configured to wirelessly transmit a communication signal is A multiplexer having a multiplexer connected to an antenna without any multiplexing circuitry The optical fiber may include a plexer.

[0094] FIG. 9 shows a radio frequency (RF) system including an antenna 192 coupled to a receive path via a multiplexer. 1 is a schematic diagram of a frequency system 190. In some examples, the radio may be A diversity antenna such as the exemplary antenna 192 can be implemented for wireless reception operations. A city antenna can provide several receiving paths for the received radio frequency signal. A multiplexer may be coupled between the multiple receive paths and the diversity antenna. As shown in FIG. 9, a multiplexer ( quadplexers) between the receive paths 195 and 196 and the antenna 192, respectively. Any suitable number of receive paths and receivers may be used for the purposes of a particular implementation. For example, four or more receive filters can be implemented in several In some instances, multiplexers and corresponding receive paths may be included. In an embodiment (not illustrated), a switch is provided between the multiplexer and the diversity antenna. The switches can be coupled and / or between the receive path and the receive filter of the multiplexer. A switch can be coupled to the

[0095] FIG. 10A shows a wireless system including a multiplexer in the signal path between the power amplifier and the antenna 177. 2 is a schematic diagram of a line frequency system 200. The exemplary line frequency system 200 is a low-band In a given application, the low-band path may be used for the mid-band path and the high-band path. The path can handle radio frequency signals with frequencies below 1 GHz, and the mid-band path is ,Can process radio frequency signals with frequencies from 1GHz to 2.2GHz, and has a high bandwidth path is capable of processing radio frequency signals with frequencies above 2.2 GHz.

[0096] A frequency multiplexing circuit such as a diplexer 176 is connected to the signal path and the antenna 1 77. Such a frequency multiplexing circuit may be included between the It can act as a frequency divider for the input signal and a frequency combiner for the transmit path. The multiplexer 176 multiplexes a plurality of radio frequency signals that are relatively separated in frequency. The diplexer 176 is a relatively low loss passive circuit element. The diplexer 176 can be implemented by The signals can be combined (for transmission) and separated (for reception).

[0097] Illustratively, the low-band path includes a power amplifier configured to amplify the low-band radio frequency signal. The amplifier 201, the band selection switch 202, and the multiplexer 203. The switch 202 routes the output of the power amplifier 201 to the selected transmit frame of the multiplexer 203. The selected transmit filter can be electrically connected to the power amplifier 201. The filter may be a bandpass filter having a passband corresponding to the frequency of the output signal of the first embodiment. Multiplexer 203 may include any suitable number of transmit filters and any suitable number of receive filters. The multiplexer 203 may include a receive filter in certain applications. In some examples, multiplexer 2 may have as many transmit filters as multiplexers. 03 may have a different number of transmit filters than receive filters.

[0098] As illustrated in FIG. 10A, the mid-band path is intended to amplify the mid-band radio frequency signal. A power amplifier 204, a band selection switch 205, and a multiplexer 206 are arranged in a similar manner. The band select switch 205 routes the output of the power amplifier 204 to the multiplexer 206. The selected transmit filter can be electrically connected to the selected transmit filter. a bandpass filter having a passband corresponding to the frequency of the output signal of the power amplifier 204; The multiplexer 206 may include any suitable number of transmit filters and any The multiplexer 206 may include any suitable number of receive filters for a given application. In some examples, there may be as many transmit filters as receive filters. , multiplexer 206 may have a different number of transmit filters than receive filters.

[0099] In the exemplary radio frequency system 200, the high-band path amplifies the high-band radio frequency signal. a power amplifier 207 configured to amplify the power of the band select switch 208; The band select switch 208 multiplexes the output of the power amplifier 207. The selected transmit filter can be electrically connected to the selected transmit filter of the filter 209. The filter is a bandpass filter having a passband corresponding to the frequency of the output signal of the power amplifier 207. The multiplexer 209 may be any suitable number of transmit filters, and any suitable number of receive filters. In some applications, there may be as many transmit filters as receive filters. In the above, the multiplexer 209 has a different number of transmit filters than receive filters. good.

[0100] A selection switch 210 selects the radio frequency signal from either the mid-band path or the high-band path. The radio frequency system 200 can thus Either a combination of low and high bands or a combination of low and mid bands, Carrier aggregation signals can be processed.

[0101] FIG. 10B illustrates a radio frequency (RF) converter including a multiplexer in the signal path between the power amplifier and the antenna. 10A is a schematic diagram of a radio frequency system 212. The radio frequency system 212 is the same as the radio frequency system of FIG. Similar to the frequency system 200, but the radio frequency system 212 is a switchplexing Switchplexing may be implemented using any suitable principles and features described herein. It can be implemented according to its purpose and advantages.

[0102] Switchplexing can implement on-demand multiplexing. Some radio frequency systems operate in a system that operates for a large amount of time (e.g., about 95% of the time). It operates in single carrier mode and carries for a small amount of time (for example, about 5% of the time). Switchplexing can be done in single-capacity aggregation mode. In rear mode, the load can be reduced. Here, the radio frequency system Compared to multiplexers that contain filters with fixed connections to nodes, they operate for a large amount of time. This load reduction is especially important when multiplexers contain many filters. This can be even more significant.

[0103] In the exemplary radio frequency system 212, multiplexers 213 and 214 are The switch 215 is coupled to the diplexer 176 via a switch 215. The switch 215 is It is configured as a multiple-close switch where the throws can be active simultaneously. By having the switch 215 have multiple throws, the transmission of the carrier aggregation signal The switch 215 can also enable single carrier mode and / or reception. Illustratively, multiplexer 213 may include a short throw that is active during the , includes multiple duplexers coupled to separate throws of switch 215. Similarly, the exemplary multi- Multiplexer 214 also includes multiple duplexers coupled to separate throws of switch 215. Alternatively, a duplexer may be coupled to each throw of switch 215 as illustrated in FIG. Alternatively, one or more of the individual filters of a multiplexer may be connected to a common node with that multiplexer. For example, some applications may have dedicated switches coupled between them. In this application, such a switch would have twice as many throws as the example switch 215. possible.

[0104] The switch 215 connects the filters of the multiplexers 213 and 214 to a common node. COM. FIG. 10B shows that the master and slave terminals can be electrically connected to a common node. Less than all of the multiplexer filters are illustrated.

[0105] In some examples, two of the switches coupled between the power amplifier and the multiplexer For example, in a radio frequency system 212, the band More than one throw of the selection switch 205 and / or band selection switch 208 may be The multiplexer filters are activated simultaneously by multiplexing the switches. When multiple power amplifiers are electrically connected simultaneously, load losses may occur. One or more of the surface acoustic wave filters are coupled between the surface acoustic wave resonator and the power amplifier. It may include a series bulk acoustic wave resonator.

[0106] FIG. 10C is a schematic diagram of an acoustic wave resonator of multiplexer 216 according to one embodiment. Multiplexer 216 is similar to multiplexer 130 of FIG. 5, but uses SAW resonators. 132 and 142 are replaced by BAW resonators 217 and 218, respectively. BAW resonators 217 and 218 are different. For example, multiple throws of a multiple throw switch are simultaneously active. By making the port I / O1 and I / O N In applications where In this case, the load can be reduced compared to the SAW resonators 132 and 142. As an example shown, BAW resonators 217 and 218 in FIG. 10C are and 218 are electrically connected to each other by the double throw of the band selection switch 205 of FIG. 10B. When the SAW resonators 132 and 142 are used, the load can be reduced compared to that of the SAW resonators 132 and 142 in FIG. The appropriate number of BAW resonators is connected to the SAW resonators of the filter and the I / O ports (e.g., the transmit filter). For example, a series BAW resonator and a and one or more other series BAW resonators and / or one or more shunt BAW resonators. In some examples, the SAW resonator may be coupled between the SAW resonator and a common node. The series BAW resonator is a surface acoustic wave (SAW) filter that is only used for I / O ports and the transmit filter of the multiplexer. Coupling between resonators (not the surface acoustic wave resonators of the receive filters of the multiplexer) In some examples, the series BAW resonators are connected to an I / O port and a multiplexer. A surface acoustic wave resonator for only the transmit filter (the receive filter and and one or more other transmit filters (not surface acoustic wave resonators).

[0107] FIG. 11A illustrates a filter including one or more acoustic wave resonators according to embodiments described herein. FIG. 2 is a block diagram of a filter assembly 220 having different dies. The filter assembly 220 includes a SAW die 222 and a BAW die 224 contained on a common substrate 226. 224. One or more acoustic wave filters are mounted on the SAW die 222 and the BAW die 224. The BAW die 224 may include a resonator mounted on the FBAR die according to certain embodiments. The substrate 226 may be a laminate substrate or any other suitable packaging substrate. The resonators of one or more acoustic wave filters of the multiplexer are connected to the SAW die 222 and the BA. The resonators of one or more multiplexers may also be implemented on the W die 224. The BAW die 224 may be implemented on the die 222. For example, Resonators for the crossbars can be mounted on the SAW die 224 and the BAW die 224 .

[0108] As an example, a quadplexer may include bands 25 and 26 electrically connected to a common node. In some designs, duplexers for bands 61 and 62 can be implemented. The transmit and receive filters of the 25-band amplifier are constructed using BAW resonators to meet performance specifications. Band 66 transmit and receive filters can be implemented to save costs. The principles and advantages described herein are implemented by SAW resonators. The majority of resonators (e.g., at least 70) in the transmit and receive filters of the code 66 %, at least 80%, or more) using the SAW resonator of the SAW die 222 These SAW resonators can be implemented as series BAW resonators on the BAW die 224. The band 66 transmit and receive filters can be connected to a common node via a filter. The filter can be implemented by a resonator on the BAW die 224. In this case, one or more resonators of the transmit filter and / or the receive filter of band 66 are It can be mounted on a W die 222.

[0109] As another example, according to certain embodiments, a duplexer may be implemented on the BAW die 224. a transmit filter including at least one resonator of the SAW die 222 and a plurality of resonators on the SAW die 222; , at least one resonator on the BAW die 224 and multiple resonators on the SAW die 222 and a receive filter including:

[0110] According to certain embodiments, one or more of the acoustic wave filters of the multiplexer may include a SAW die. The resonators on both the 222 and BAW die 224 can be implemented using the same multiplexer. One or more acoustic wave filters may be formed on only one of the SAW die 222 or the BAW die 224. A resonator can be implemented.

[0111] In some embodiments, different SAW dies and / or Different BAW dies can be implemented for different frequency ranges. , may include piezoelectric layers and / or metallization layers of different thicknesses.

[0112] FIG. 11B illustrates a different diaphragm including an acoustic wave resonator of a filter according to embodiments described herein. 2 is a block diagram of a filter assembly 227 having a filter assembly 227. Assembly 227 includes SAW dies 222A and 222B and B contained on a common substrate 226. The multiplexer includes the first SAW die 222A and the BAW die 222B. The multiplexer may also include an acoustic wave filter including a resonator mounted on the second Other acoustic wave filters including resonators mounted on SAW die 222B and BAW die 224 The different SAW dies 222A and 222B may also include a filter. SAW resonances for acoustic wave filters arranged to filter radio frequency signals. The multiplexer 20 of FIG. 2A can be implemented as a filter assembly 227. For example, the first transmit filter and The SAW resonators of one receiver can be mounted on the first SAW die 222A, and multiple receivers can be mounted on the first SAW die 222B. The SAW resonators of the second transmit filter and the second receive filter of the lexer 20 are connected to the second SAW die. 222B, and the BAW resonators of each filter of the multiplexer 20 can be implemented on It can be implemented on the BAW die 224. In some other examples (not illustrated), The BAW resonators of the multiplexer 20 can be implemented on two or more BAW dies. .

[0113] FIG. 11C illustrates a different diaphragm including an acoustic wave resonator of a filter according to embodiments described herein. 2 is a block diagram of a filter assembly 229 having a filter assembly 229. Assembly 229 includes SAW dies 222A, 222B and 222C contained on a common substrate 226. The multiplexer includes the first SAW die 222A and B. The multiplexer may include an acoustic wave filter including a resonator mounted on the AW die 224. Also, other resonators including those mounted on the second SAW die 222B and the BAW die 224 are The multiplexer may also include a third SAW die 222C and B. It may include additional acoustic wave filters including resonators mounted on the AW die 224. The AW dies 222A, 222B, and 222C receive radio frequency signals within different predetermined frequency ranges. Implementing SAW resonators for acoustic wave filters arranged to filter This can be done.

[0114] The multiplexer 70 of FIG. 4 may be implemented by a filter assembly 229. For example, the first transmitting filter and the first receiving SAW resonator of the multiplexer 70 are The second transmit filter of the multiplexer 70 may be mounted on the first SAW die 222A. The SAW resonators of the first receiving filter and the second receiving filter may be mounted on the second SAW die 222B. The SAW resonators of the third transmitting filter and the third receiving filter of the multiplexer 70 can be The BAW resonators of the multiplexer 70 can be mounted on the SAW die 222C. It can be implemented on the BAW die 224. In some other examples (not illustrated), The BAW resonators of the multiplexer 70 can be implemented on two or more BAW dies. .

[0115] The filters and multiplexers described herein may be implemented in a variety of packaged modules. Any of the multiplexers and / or filters described herein may be implemented. Some examples of packaged modules that can implement the relevant principles and advantages are: 12, 13, and 14 illustrate exemplary packages according to certain embodiments. FIG. 1 is a schematic block diagram of a module.

[0116] FIG. 12 illustrates a power amplifier 232, a switch 234, and a filter according to one or more embodiments. 2 is a schematic block diagram of a module 230 including a data processor 236. The power amplifier 232, the switch 234, and the filter 236 may include a package that encapsulates the components shown. The filter 236 may be disposed on a common package substrate. The switch 234 may be a multi-throw radio frequency switch. The switch 234 electrically couples the output of the power amplifier 232 to a selected filter of the filter 236. The filter 236 may be any suitable filter configured as a multiplexer. The acoustic wave filters of filter 236 may include any number of acoustic wave filters as described herein. The filter 236 may be implemented according to any suitable principles and advantages. It may include one or more SAW dies and one or more BAW dies.

[0117] FIG. 13 shows power amplifiers 242 and 243, switches 244 and 245, and one or more 2 is a schematic block diagram of a module 240 including a filter 246 according to an embodiment of the present invention. Module 240 is similar to module 230 of FIG. 12, except that module 240: An additional power amplifier 243 and a filter 246 including an additional switch 245 are connected to the power amplifier. differing in that they are arranged as one or more multiplexers for associated signal paths. .

[0118] FIG. 14 illustrates power amplifiers 252 and 253, switches 254 and 255, and one or more implementations. A module including filters 257 and 258 according to the configuration and an antenna switch 259. 13. Module 250 is a schematic block diagram of module 240 of FIG. Similarly, the module 250 may also apply the signal from the filter 257 or the filter 258 to the 259 arranged to selectively couple to the antenna nodes. Filters 257 and 258 are arranged as separate multiplexers in FIG. do.

[0119] FIG. 15 illustrates a wireless communication device 260 including a filter 263 according to one or more embodiments. 2 is a schematic block diagram of a wireless communication device 260. For example, the wireless communication device 260 may be a mobile phone such as a smartphone. As illustrated, the wireless communication device 260 includes an antenna 261, an RF front end, The antenna includes a base 262, an RF transceiver 264, a processor 265, and a memory 266. 261 can transmit an RF signal provided by RF front end 262. The RF front end 261 provides the received RF signal to the RF front end 262 for processing. It is possible.

[0120] The RF front end 262 may include one or more power amplifiers, one or more low noise amplifiers, and multiple RF switches, multiple receive filters, multiple transmit filters, multiple duplex filters The RF front end 262 may include any suitable The present invention is capable of transmitting and receiving RF signals associated with any appropriate communication standard. The acoustic wave filters and / or multiplexers may be used in place of the filters in the RF front end 262. 263.

[0121] The RF transceiver 264 transmits the RF signal to the RF front end for amplification and / or other processing. The RF transceiver 264 can also be provided to the RF front end 262. The RF transceiver 264 can process the RF signal provided by the low noise amplifier 62. The processor 265 may be a baseband processor. Processor 265 may provide any suitable baseband processing functionality for wireless communication device 260. The memory 266 can be accessed by the processor 265. The memory 266 may store any suitable data for the wireless communication device 260. This can be done.

[0122] Some of the above-described embodiments relate to portable devices such as cellular handsets. However, the principles and advantages of such embodiments are not limited to those described herein. Any device, such as an uplink cellular device, may benefit from any of the embodiments described herein. The teachings herein may be used in conjunction with various systems or devices. Although the present disclosure includes several example embodiments, the The teachings set forth herein may be applied to a variety of structures. Both are in the range of about 30kHz to 300GHz, such as the range of about 450MHz to 6GHz. The present invention can be implemented in conjunction with RF circuitry for processing signals within the RF spectrum.

[0123] Aspects of the present disclosure can be implemented in a variety of electronic devices. Examples include consumer electronic products, acoustic wave resonator dies and / or semiconductor dies and / or packaged Components of consumer electronic products such as radio frequency modules, uplink wireless communication devices, This includes, but is not limited to, wireless communication infrastructure, electronic test equipment, etc. Examples of devices include mobile phones such as smartphones, smart watches, or earpieces. Wearable computing devices such as phones, televisions, computer monitors, Computers, modems, handheld computers, laptop computers, tablets laptop computers, personal digital assistants (PDAs), microwave ovens, refrigerators, Cars, stereo systems, DVD players, CD players, MP3 players, etc. Digital music players, radios, video cameras, cameras, digital cameras, portable Memory chips, washing machines, dryers, washer / dryers, copiers, fax machines, scanners, This includes, but is not limited to, multi-function peripheral devices, wristwatches, clocks, etc. Chairs may also include unfinished products.

[0124] Throughout this specification and claims, unless the context clearly indicates otherwise, The terms "including" and "including" are used in an inclusive sense as opposed to an exclusive or exhaustive sense, i.e., " The term "including but not limited to" should be interpreted as meaning "including but not limited to" as generally used herein. The term "coupled" refers to either direct connection or connection through one or more intermediate elements. Similarly, the word "connected" as generally used herein refers to two or more elements that may be connected. may be either directly connected or connected via one or more intermediate elements. In addition, the words "here," "above," "below," and similar imports are used to refer to two or more elements. When a word is used in this Application, it refers to the Application as a whole. , does not refer to any specific part of this Application. Where the context permits, Each term in the above detailed description using the singular or plural number also includes the plural or singular number. The words "or" and "or" refer to a list of two or more items. This covers all of the following interpretations of the list: any item in the list, All items and any combination of items in the list.

[0125] Furthermore, the following are among others: "can," "might," "may," "might," "even Conditional language such as "if," "like," etc., used herein generally refers to situations where the Unless stated or understood otherwise by the context of use, a given embodiment that one embodiment includes certain features, elements and / or conditions while other embodiments do not. That is, such conditional language is intended to convey the characteristics, elements, and / or states The embodiment may be in any aspect necessary for one or more embodiments, or may be in any aspect necessary for one or more embodiments. necessarily incorporates these features, elements and and / or whether the state is included in or performed in any specific embodiment. It is not generally intended to imply that the term "internal" includes logic for determining whether an internal or external event is occurring.

[0126] While several embodiments of the present invention have been described, these embodiments are presented by way of example only. and are not intended to limit the scope of the present disclosure. The novel methods, apparatus, and systems may be embodied in a variety of other forms. Various omissions, substitutions and changes in the form of the methods and systems described herein are intended to be illustrative and not restrictive of the present disclosure. For example, although the blocks are presented in a given sequence, , Alternative embodiments may perform similar functions with different components and / or circuit topologies. Some blocks can be deleted, moved, added, subdivided, combined, and / or modified. Each of these blocks can be implemented in a variety of different ways. Any suitable combination of the elements and steps of the various embodiments described above may be used in further implementations. The appended claims and their equivalents are intended to be illustrative and not restrictive. However, it is intended to cover such forms or modifications as fall within the scope and spirit of the present disclosure.

Claims

1. A multiplexer, four acoustic wave filters coupled to a common node; The four acoustic wave filters include a plurality of surface acoustic wave resonators and a coupling element between the surface acoustic wave resonators and the a first acoustic wave resonator including a series bulk acoustic wave resonator coupled between the first and second common nodes; A multiplexer containing a filter.

2. The surface acoustic wave resonator is a series bulk acoustic wave resonator connected in series with one series surface acoustic wave resonator.

10. The multiplexer of claim 1, comprising a wave resonator.

3. The surface acoustic wave resonator of the first acoustic wave filter includes a plurality of resonators of the first acoustic wave filter.

2. The multiplexer of claim 1, wherein the .lambda.

4. 2. The multiplexer of claim 1, wherein at least 70% of the resonators of the multiplexer are surface acoustic wave resonators. Multiplexer.

5. The series bulk acoustic wave resonator is a resonator that is connected to all of the plurality of surface acoustic wave resonators of the first acoustic wave filter.

2. The multiplexer of claim 1, wherein the first and second inputs are coupled between the first and second inputs and the common node.

6. The first acoustic wave filter further comprises a series bulk acoustic wave resonator coupled to the surface acoustic wave resonator.

2. The multiplexer of claim 1, further comprising a shunt bulk acoustic wave resonator coupled to a plurality of bulk acoustic wave resonators. sa.

7. The four acoustic wave filters include a plurality of second surface acoustic wave resonators and the second surface acoustic wave resonators. and a second series bulk acoustic wave resonator coupled between the resonator and the common node.

2. The multiplexer of claim 1, further comprising a second acoustic wave filter.

8. 10. The multiplier of claim 1 further comprising two additional acoustic wave filters coupled to said common node. Lexa.

9. 1. A wireless communication device, comprising: an antenna configured to receive radio frequency signals; a multiplexer including four acoustic wave filters coupled to a common node; Including, The four acoustic wave filters include a plurality of surface acoustic wave resonators and a coupling element between the surface acoustic wave resonators and the a first acoustic wave resonator including a series bulk acoustic wave resonator coupled between the first and second common nodes; A wireless communication device including a filter.

10. a frequency multiplexing circuit coupled between the common node and the antenna; The wireless communication device of claim 9 further comprising:

11. and an antenna switch coupled between the common node and the antenna. The wireless communication device of claim 9.

12. 10. The wireless communication device of claim 9, wherein the radio frequency signal is a carrier aggregation signal. 。

13. 1. A filter assembly comprising: a first acoustic wave filter coupled to a common node; a second acoustic wave filter coupled to the common node; Including, The first acoustic wave filter includes a plurality of surface acoustic wave resonators and a common electrode between the surface acoustic wave resonators and the common electrode. a series bulk acoustic wave resonator coupled between the common node and the filter assembly; 。

14. The second acoustic wave filter includes a plurality of second surface acoustic wave resonators and a second surface acoustic wave resonator. and a second series bulk acoustic wave resonator coupled between said common node. 13 filter assemblies.

15. 10. The method of claim 1 further comprising at least two additional acoustic wave filters coupled to the common node. 3 filter assembly.

16. 10. The method of claim 1 further comprising at least four additional acoustic wave filters coupled to said common node. 3 filter assembly.

17. The surface acoustic wave resonator is a series bulk acoustic wave resonator connected in series with one series surface acoustic wave resonator.

14. The filter assembly of claim 13, comprising a wave resonator.

18. The surface acoustic wave resonators include at least 70% of the resonators of the first acoustic wave filter.

14. The filter assembly of claim 13.

19. The series bulk acoustic wave resonator is a resonator that is connected to all of the plurality of surface acoustic wave resonators of the first acoustic wave filter.

14. The filter assembly of claim 13, wherein the filter assembly is coupled between the common node and the filter.

20. 14. The filter assembly of claim 13, wherein the surface acoustic wave resonators include at least five resonators. 。

21. 1. A filter assembly comprising: a first acoustic wave filter having a passband and coupled to a common node; a second acoustic wave filter coupled to the common node; Including, The second acoustic wave filter includes a plurality of first-type acoustic wave resonators and a plurality of first-type acoustic wave resonators. and a second type of series acoustic wave resonator coupled between the acoustic wave resonator of the first type and the common node. Including the vessel, The second type of series acoustic wave resonator has a passband of the first acoustic wave filter. a filter assembly having a quality factor higher than that of the first type of plurality of acoustic wave resonators; 。

22. the first type of elastic resonators are surface acoustic wave resonators; 22. The one series acoustic wave resonator of the second type is one bulk acoustic wave resonator. Filter assembly.

23. the first type of elastic resonators are a plurality of non-temperature compensated surface acoustic wave resonators; The second type of series acoustic wave resonator is a temperature compensated surface acoustic wave resonator.

22. The filter assembly of claim 21.

24. At least two of the plurality of first type elastic resonators are one series elastic resonator of the second type.

22. The filter assembly of claim 21 in series with a polarized wave resonator.

25. a third acoustic wave filter coupled to the common node; a fourth acoustic wave filter coupled to the common node; 22. The acoustic wave filter assembly of claim 21, further comprising:

26. The second type of series acoustic wave resonator has a passband of the third acoustic wave filter. and a quality factor higher than that of the first type of acoustic wave resonators, The second type of series acoustic wave resonator has a passband of the fourth acoustic wave filter.

26. The filter of claim 25, wherein the filter has a higher quality factor than the first type of the plurality of acoustic wave resonators. ta assembly.

27. The plurality of first-type acoustic wave resonators of the second acoustic wave filter are 22. The filter assembly of claim 21, wherein at least 70% of the plurality of resonators

28. The filter assembly includes: a first die including a plurality of acoustic wave resonators of the first type; a second die including one series acoustic wave resonator of the second type; 22. The filter assembly of claim 21, comprising:

29. A multiplexer including a plurality of acoustic wave filters, a first acoustic wave filter coupled to a common node; three other acoustic wave filters coupled to the common node, each having a corresponding passband; and Including, The first acoustic wave filter includes: a plurality of acoustic wave resonators of a first type; a second type of acoustic wave resonator coupled between the first type of acoustic wave resonators and the common node; One series acoustic wave resonator and Including, The second type of one series acoustic wave resonator is connected to each of the three other acoustic wave filters. a multi-type acoustic wave resonator having a quality factor higher than that of the first type acoustic wave resonators in an overband; Plexa.

30. the first type of elastic resonators are surface acoustic wave resonators; 30. The one series acoustic wave resonator of the second type is one bulk acoustic wave resonator. Multiplexer.

31. At least one of the three other acoustic wave filters is a plurality of second acoustic wave resonators of the first type; the second acoustic wave resonators coupled between the first type of second plurality of acoustic wave resonators and the common node; a second series acoustic wave resonator of one of the types; 30. The multiplexer of claim 29, comprising:

32. the first type of elastic resonators are a plurality of non-temperature compensated surface acoustic wave resonators; and wherein said second type series acoustic wave resonator is a temperature compensated surface acoustic wave resonator. Item 29: Multiplexer.

33. 30. The multi-layer filter of claim 29, further comprising an additional acoustic wave filter coupled to the common node. Plexa.

34. 1. A method for processing a carrier aggregation signal, comprising: The carrier aggregation signal is combined into one antenna port and then transmitted through a first passband. and filtering the signal by a first acoustic wave filter having a capacitance of the re-aggregation signal comprises a first radio frequency carrier in the first passband; and a second radio frequency carrier in the second passband; and The carrier aggregation signal is coupled to the antenna port and transmitted through the second passband. filtering by a second acoustic wave filter having a frequency band; Including, The second acoustic wave filter includes: a plurality of acoustic wave resonators of a first type; a second type coupled between the first type of acoustic wave resonators and the antenna port; One series acoustic wave resonator and Including, The second type of series acoustic wave resonator is made of a plurality of first type acoustic wave resonators. This method has the lowest load losses.

35. The carrier aggregation signal is transmitted via an antenna coupled to the antenna port.

35. The method of claim 34, further comprising receiving the signal.

36. The carrier aggregation signal is transmitted via an antenna coupled to the antenna port.

35. The method of claim 34, further comprising transmitting the

37. The first acoustic wave filter and the second acoustic wave filter are connected via a single multi-throw switch.

35. The method of claim 34, further comprising coupling to the common node.

38. The first type of elastic resonators are surface acoustic wave resonators, and the second type of elastic resonators are surface acoustic wave resonators.

35. The multiplexer of claim 34, wherein one series acoustic wave resonator is one bulk acoustic wave resonator. 。

39. the first type of elastic resonators are a plurality of non-temperature compensated surface acoustic wave resonators; and wherein said second type series acoustic wave resonator is a temperature compensated surface acoustic wave resonator. Item 34 multiplexer.

40. The plurality of first-type acoustic wave resonators are different from the single series acoustic wave resonator of the second type.

35. The method of claim 34, wherein the die comprises:

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