WO2021147632A1 - 四工器的拓扑结构 - Google Patents

四工器的拓扑结构 Download PDF

Info

Publication number
WO2021147632A1
WO2021147632A1 PCT/CN2020/141262 CN2020141262W WO2021147632A1 WO 2021147632 A1 WO2021147632 A1 WO 2021147632A1 CN 2020141262 W CN2020141262 W CN 2020141262W WO 2021147632 A1 WO2021147632 A1 WO 2021147632A1
Authority
WO
WIPO (PCT)
Prior art keywords
duplexer
bridge
port
degree
radio frequency
Prior art date
Application number
PCT/CN2020/141262
Other languages
English (en)
French (fr)
Inventor
庞慰
徐利军
Original Assignee
诺思(天津)微系统有限责任公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 诺思(天津)微系统有限责任公司 filed Critical 诺思(天津)微系统有限责任公司
Publication of WO2021147632A1 publication Critical patent/WO2021147632A1/zh

Links

Images

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/70—Multiple-port networks for connecting several sources or loads, working on different frequencies or frequency bands, to a common load or source
    • H03H9/703—Networks using bulk acoustic wave devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
    • H01Q3/30—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array
    • H01Q3/34—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array by electrical means

Definitions

  • the invention relates to the technical field of bulk acoustic wave filters, in particular to a topological structure of a quadruple.
  • the radio frequency filter plays a vital role. It can filter out the out-of-band interference and noise to meet the requirements of the radio frequency system and
  • the communication protocol requires the signal-to-noise ratio to improve communication quality and improve user experience.
  • the system not only has higher requirements on the performance of the filter, but also put forward higher requirements on the volume size, and the bulk acoustic wave filter can just meet its requirements.
  • the bulk acoustic wave resonator uses the piezoelectric effect of a piezoelectric crystal to generate resonance. Since resonance is generated by mechanical waves instead of electromagnetic waves as the source of resonance, the wavelength of mechanical waves is much shorter than that of electromagnetic waves. Therefore, the volume of the bulk acoustic wave resonator and the filter composed of it is greatly reduced compared with the traditional electromagnetic filter. On the other hand, since the crystal orientation growth of the piezoelectric crystal can be well controlled at present, the loss of the resonator is extremely small, the quality factor is high, and it can cope with complex design requirements such as steep transition band and low insertion loss. Due to the small size, high roll-off, and low insertion loss of the BAW filter, the BAW filter with this as the core has been widely used in communication systems.
  • the small base station system will become an important part.
  • the small base station system will adopt a higher transmission frequency. Due to the space attenuation, the power of the transmitted signal will inevitably be increased. In order to improve the sensitivity of the receiver, it must be Transceiver isolation puts forward higher requirements, so the future small base station system will inevitably require that the filter and multiplexer size be small, the power capacity must be high, the isolation must be high, and the cost is low.
  • the cavity is mainly used in the base station system. Filters, cavity multiplexers, cavity structure filters, multiplexers have small insertion loss, good out-of-band suppression, and high isolation.
  • one of the obvious disadvantages is that they are large in size and high in processing costs, making it difficult to use in the future. It is widely used in 5G communications, and the characteristics of bulk acoustic wave filters and multiplexers are good insertion loss, high out-of-band suppression, and low cost. However, one of its significant disadvantages is poor power capacity. The current power capacity is only 1.5W. It is difficult to adapt to the requirements of future 5G communications.
  • the present invention provides a topological structure of a quadruplexer.
  • the purpose of the quadruplexer is that the isolation degree of the quadruplexer for the current conventional quadruplexer topology is only 60dB, and the power capacity is only about 1.5W. It is difficult to apply to the future 5G small
  • the current situation of the base station system proposes a structure that can improve the isolation and power capacity at the same time.
  • the isolation can be increased by about 20dB, and the power capacity can be increased by about 1 time. It is expected to be widely used in the future 5G small cell system.
  • a topological structure of a quadruplexer including: a first topological structure and a second topological structure; the first topological structure includes a first electric bridge, a second phase shifting element, a third phase shifting element, a first duplexer, a second Triple duplexer; the second topology structure includes a fourth bridge, a fifth phase shifting element, a sixth phase shifting element, and a second duplexer and a fourth duplexer; the first bridge and the fourth bridge are both Ninety-degree electric bridge; the input end of the first electric bridge is connected to the antenna, and the isolated end is connected to the input end of the fourth electric bridge; the isolated end of the fourth electric bridge is connected to the resistance and grounded; the zero-degree output end of the first electric bridge is connected to the negative nine The ten-degree output terminal is connected to the antenna port of the first duplexer and the third duplexer respectively; the zero-degree output terminal and the negative ninety-degree output terminal of the fourth bridge are respectively connected to the second duplexer and the fourth duplexer The antenna end
  • the first topology includes a first bridge (bridge 1), a second phase shifting element (bridge 2), a first duplexer (first duplexer 1), and a first Triple duplexer (first duplexer 2), third phase shifting element (bridge 3);
  • the second topology structure includes the fourth bridge (bridge 4), the fifth phase shifting element (bridge 5) and The second duplexer (second duplexer 1), the fourth duplexer (second duplexer 2), and the sixth phase shifting element (bridge 6);
  • the first and fourth bridges are both Ninety-degree electric bridge; the input end of the first electric bridge is connected to the antenna, and the isolated end is connected to the input end of the fourth electric bridge; the isolated end of the fourth electric bridge is connected to the resistance and grounded; the zero-degree output end of the first electric bridge is connected to the negative nine
  • the ten-degree output terminals are respectively connected to the antenna terminal ports of the two first duplexers; the zero-degree output terminal and the negative ninety-degree output terminal of the fourth bridge are respectively connected to
  • the radio frequency receiving ports of the first duplexer and the third duplexer respectively form the first receiving port through the third phase shifting element; the radio frequency receiving ports of the second duplexer and the fourth duplexer respectively pass through the sixth
  • the phase shifting element forms a second receiving port.
  • the second phase shifting element and the fifth phase shifting element are respectively a second bridge and a fifth bridge of ninety degrees, that is, according to the form of FIG. 1, specifically, the bridge 2 and the bridge 5 are respectively. .
  • the radio frequency transmitting port of the first duplexer is connected to the input end of the second electric bridge; the radio frequency transmitting port of the third duplexer is connected to the isolating end of the second electric bridge; the radio frequency transmitting port of the second duplexer is connected to The input end of the fifth bridge; the RF transmitting port of the fourth duplexer is connected to the isolation end of the fifth bridge; the zero-degree output ports of the second bridge and the fifth bridge are connected to the resistance and grounded; the second bridge’s The negative ninety degree output port is connected to the first transmitting port; the negative ninety degree output port of the fifth bridge is connected to the second transmitting port.
  • the third phase shifting element and the sixth phase shifting element are the third bridge and the sixth bridge, respectively, that is, according to the form of FIG. 1, specifically, the bridge 3 and the bridge 6 are respectively.
  • the radio frequency receiving port of the first duplexer is connected to the input end of the third bridge; the radio frequency receiving port of the third duplexer is connected to the isolation end of the third bridge; the radio frequency receiving port of the second duplexer is connected to The input end of the sixth bridge; the radio frequency receiving port of the fourth duplexer is connected to the isolation end of the sixth bridge; the zero-degree output ports of the third and sixth bridges are connected to the resistors and then grounded; the third bridge’s The negative ninety-degree output port is connected to the first receiving port; the negative ninety-degree output port of the sixth bridge is connected to the second receiving port.
  • the third phase shifting element and the sixth phase shifting element are respectively a thirty-ninety degree phase shifter and a sixty-ninth degree phase shifter, that is, the end b in the figure can be selected according to the form of FIG. 12 And the 90-degree phase shifter at the d end.
  • the radio frequency receiving port of the third duplexer is connected to the thirty-nine degree phase shifter and forms a first differential receiving port with the radio frequency receiving port of the first duplexer; the radio frequency receiving port of the fourth duplexer is connected The sixty-ninety degree phase shifter forms a second differential receiving port with the radio frequency receiving port of the second duplexer.
  • the first duplexer and the third duplexer have the same structure and the same electrical performance; the second duplexer and the fourth duplexer have the same structure and the same electrical performance.
  • the resistance is a fifty ohm resistance.
  • the phase imbalance of the first electric bridge and the fourth electric bridge is less than three degrees.
  • the isolation and power capacity can be improved at the same time, the isolation can be increased by about 20 dB, and the power capacity can be increased by about 1 time. It is expected to be widely used in the future 5G small cell system.
  • Figure 1 is a schematic diagram of the prior art
  • Figure 2 is the topological structure of the quadruplexer of the first embodiment
  • Figure 3 is a schematic diagram of a ninety degree electric bridge
  • Figure 4 is a comparison diagram of Band1's TX band insertion loss
  • Figure 5 is a comparison diagram of Band1's RX frequency band insertion loss
  • Figure 6 is a comparison diagram of Band1's TX and RX frequency band isolation
  • Figure 7 is a comparison diagram of Band3's TX band insertion loss
  • Figure 8 is a comparison diagram of Band3's RX frequency band insertion loss
  • Figure 9 is a comparison diagram of Band3's TX and RX frequency band isolation
  • Figure 10 is a comparison diagram of the cross-isolation of Band3's TX and Band1's RX frequency bands;
  • Figure 11 is a comparison diagram of the cross-isolation of Band1's TX and Band3's RX frequency bands;
  • FIG. 12 is the topology structure of the quadruplexer of Embodiment 2.
  • Figure 13 shows the phase relationship between the ports of the ninety-degree bridge.
  • the conventional technical method for realizing a quadruplexer is to connect two duplexers in parallel.
  • the first duplexer covers one transmitting frequency band and one receiving frequency band
  • the second duplexer covers another transmitting frequency band. And an additional receiving frequency band.
  • the topology of such a quadruplexer is simple, the performance of the quadruple is completely determined by the performance of the duplexer. If the isolation of the duplexer is poor, the isolation of the quadruplexer is Certainly poor, and at the same time, the power capacity of such a topology is completely determined by the power capacity of the filter constituting the duplexer, so the power capacity is also poor, and it is difficult to meet future 5G applications.
  • Figure 2 is the topological structure of the quadruplexer of embodiment 1, which is mainly composed of 6 90-degree bridges and 4 duplexers to form a high-power, high-isolation quadruplexer, of which 6 90-degree electrical
  • the bridges are exactly the same, namely, electric bridge 1, electric bridge 2, electric bridge 3, electric bridge 4, electric bridge 5, electric bridge 6 (that is, the first electric bridge, the second electric bridge, the third electric bridge, and the fourth electric bridge).
  • the fifth bridge, the sixth bridge), and two of the four duplexers are the same, which are recorded as the first duplexer 1 and the first duplexer 2, and the other two duplexers are completely Same as the second duplexer 1 and the second duplexer 2.
  • the 90-degree bridge has 4 ports, namely J1, J2, J3, and J4. If J1 is used as the input terminal, then J4 port is isolation, J2 and J3 are output ends. The output signals of these two ports have the same amplitude and a phase difference of 90 degrees. Specifically, the output of J3 port is 0 degrees, and the output of J2 is -90 degrees. In fact, the 90-degree bridge is reciprocal, any port can be used as the input terminal, and the corresponding isolation terminal and output terminal will also change with the change of the input port. Table 1 in Figure 13 is the 90-degree bridge. The phase relationship between the ports.
  • Example 1 The electrical connection relationship of Example 1 is:
  • the input terminal IN of bridge 1 is connected to the antenna, the isolating terminal ISO is connected to the input terminal IN of bridge 4, the 0 degree output terminal of bridge 1 is connected to port 1 of the first duplexer 1, and the -90 degree output terminal of bridge 1 Connect to port 1 of the first duplexer 2.
  • the 2 ports of the first duplexer 1 and the 2 ports of the first duplexer 2 are connected to the input terminal IN and the isolation terminal ISO of the bridge 2 respectively.
  • the 0 degree output port of the bridge 2 is connected to a 50 ohm resistor and then grounded.
  • the -90 degree output port of Bridge 2 is connected to the first transmitting port TX1.
  • the 3 ports of the first duplexer 1 and the 3 ports of the first duplexer 2 are respectively connected to the input terminal IN and the isolation terminal ISO of the bridge 3, and the 0 degree output port of the bridge 3 is connected to a 50 ohm resistor. Ground, the -90 degree output port of the bridge 3 is connected to the first receiving port RX1, thereby forming the transmitting end and the receiving end of the first duplexer.
  • the principle of this quadruplexer topology to improve the transmission and reception isolation of the first duplexer is as follows: the signal transmitted from TX1 is divided into two channels after passing through bridge 2, the amplitude is equal, the phase difference is 90 degrees, and the phase is 90 degrees behind.
  • the one-degree signal will enter from port 2 of the first duplexer 1, exit from port 3 of the first duplexer 1, and then pass through the bridge 3 and shift the phase by 90 degrees before reaching the RX1 end. After bridge 2, there is no phase change.
  • This signal enters from port 2 of the first duplexer 2, exits from port 3 of the first duplexer 2, and then reaches the RX1 end after passing through the bridge 3 without phase shift.
  • the channel signals are equal in amplitude and 180 degrees out of phase.
  • the isolation between TX1 and RX1 has nothing to do with the isolation of the duplexer, but only depends on the phase imbalance of the 90-degree bridge.
  • the phase imbalance of a degree bridge will have a greater impact on the phase cancellation.
  • the current phase imbalance of the 90 degree bridge on the market is less than 3 degrees, and the transceiver isolation can be improved by about 20dB. Since the transmitted signal passes through the bridge 2, the signal enters the duplexer in two ways. If each duplexer reaches its power limit, the power capacity of the topology can be doubled. The power capacity is doubled, and the isolation is increased by 20dB. This topology is particularly suitable for future 5G small cell applications.
  • the input end IN of the bridge 4 is connected to the isolation end ISO of the bridge 1, the isolation end ISO of the bridge 4 is connected to a 50 ohm resistor and then grounded, and the 0 degree output end of the bridge 4 is connected to the 1 of the second duplexer 1.
  • the -90 degree output terminal of the bridge 4 is connected to the 1 port of the second duplexer 2.
  • the 2 ports of the second duplexer 1 and the 2 ports of the second duplexer 2 are respectively connected to the input terminal IN and the isolation terminal ISO of the bridge 5, and the 0 degree output port of the bridge 5 is connected to a 50 ohm resistor and then grounded.
  • the -90 degree output port of the bridge 5 is connected to the second transmitting port TX2.
  • the 3 ports of the second duplexer 1 and the 3 ports of the second duplexer 2 are connected to the input terminal IN and the isolation terminal ISO of the bridge 6 respectively, and the 0 degree output port of the bridge 6 is connected to a 50 ohm resistor. Ground, the -90 degree output port of the bridge 6 is connected to the second receiving port RX2.
  • the signal transmitted from TX2 will be divided into two channels after passing through the bridge 5.
  • the amplitude is equal, the phase difference is 90 degrees, and the phase lags behind.
  • the 90-degree signal will enter from port 2 of the second duplexer 1, exit from port 3 of the second duplexer 1, and then pass through the bridge 6 and shift the phase by 90 degrees before reaching the RX2 end, and the other way will pass through After bridge 5, there is no phase change.
  • This signal enters from port 2 of second duplexer 2, exits from port 3 of second duplexer 2, and reaches RX2 after passing through bridge 6 without phase shift.
  • the two signals have the same amplitude and 180 degrees phase difference, which can be completely canceled in theory. That is to say, the isolation of TX2 and RX2 has nothing to do with the isolation of the duplexer, but only depends on the phase imbalance of the 90-degree bridge. It should be noted that the phase imbalance of the 90-degree bridge will have a greater impact on the phase cancellation.
  • the phase imbalance of the 90-degree bridge currently on the market is basically less than 3 degrees, that is, the phase shift range is approximately 87 degrees to 93 degrees, the transceiver isolation can be improved by about 20dB. Since the transmitted signal passes through the bridge 2, the signal enters the duplexer in two ways. If each duplexer reaches its power limit, the power capacity of the topology can be doubled. The power capacity is doubled, and the isolation is increased by 20dB. This topology is particularly suitable for base station applications.
  • the principle of isolation between the first duplexer and the second duplexer is as follows: transmit a signal from TX2, pass through the bridge 5 and the second duplexer 1, and then pass through the second duplexer 2.
  • the bridge 4 forms a transmission signal at the IN end of the bridge 4, and then passes through the ISO end of the bridge 1, and is divided into two signals. The two signals will be totally reflected by the first duplexer 1 and the first duplexer 2. , And then enter the antenna end.
  • the RX2 signal if it is received, it will also be totally reflected by the first duplexer 1 and the first duplexer 2, and then enter the ISO end of the bridge 1, and then after the bridge 4, the second The duplexer 1, the second duplexer 2, and the bridge 6 enter the RX2 end.
  • the first duplexer is Band1
  • its TX frequency band includes: 1920MHz-1980MHz
  • RX frequency band includes: 2110MHz-2170MHz
  • the second duplexer is Band3.
  • TX frequency band includes: 1710MHz-1785MHz
  • RX frequency band includes: 1805MHz-1880MHz.
  • the insertion loss of the 90-degree bridge is 0.3dB
  • the phase imbalance is 3 degrees.
  • Figure 4 is a comparison diagram of Band1's TX band insertion loss.
  • the solid line in the figure is the insertion loss of a conventional quadruple.
  • the dotted line in the figure is the simulation result of Example 1. Due to the introduction of a 90-degree bridge, the insertion loss has dropped. 0.5dB.
  • Figure 5 is a comparison diagram of Band1's RX band insertion loss.
  • the solid line in the figure is the insertion loss of a conventional quadruple.
  • the dotted line in the figure is the simulation result of Example 1. Due to the introduction of a 90-degree bridge, the insertion loss has dropped. 0.5dB.
  • Figure 6 is a comparison diagram of Band1's isolation between TX and RX frequency bands.
  • the solid line in the figure is the isolation of the conventional quadruple, and the dotted line is the simulation result of Embodiment 1. From the comparison, it is found that the isolation is improved by more than 22dB.
  • Figure 7 is a comparison diagram of Band3's TX band insertion loss.
  • the solid line in the figure is the insertion loss of a conventional quadruple.
  • the dotted line in the figure is the simulation result of Example 1. Due to the introduction of a 90-degree bridge, the insertion loss has dropped. 0.5dB.
  • Figure 8 is a comparison diagram of Band3's RX frequency band insertion loss.
  • the solid line in the figure is the insertion loss of a conventional quadruple.
  • the dotted line in the figure is the simulation result of Example 1. Due to the introduction of a 90-degree bridge, the insertion loss has dropped. 0.5dB.
  • Figure 9 is a comparison diagram of the isolation between the TX and RX frequency bands of Band3.
  • the solid line in the figure is the isolation of the conventional quadruple, and the dotted line is the simulation result of Embodiment 1. From the comparison, it is found that the isolation is improved by more than 22dB.
  • Figure 10 is a comparison diagram of the cross-isolation of Band3's TX and Band1's RX frequency bands.
  • the solid line in the figure is the isolation of the conventional quadruple, and the dotted line is the simulation result of Example 1. From the comparison, it is found that the isolation is improved by 22dB. above.
  • Figure 11 is a comparison diagram of the cross-isolation of Band1's TX and Band3's RX frequency bands.
  • the solid line in the figure is the isolation of the conventional quadruple, and the dotted line is the simulation result of Example 1. From the comparison, it is found that the isolation is improved by 22dB above.
  • Figure 12 is the topological structure of the quadruplexer of the second embodiment, which is mainly composed of 4 90-degree bridges, 2 90-degree phase shifters and 4 duplexers to form a high-power, high-isolation quadruplexer.
  • the four 90-degree bridges are identical, namely, bridge 1, bridge 2, bridge 3, and bridge 4.
  • two of the duplexers are the same, which is recorded as the first duplex
  • the duplexer 1 and the first duplexer 2 and the other two duplexers are exactly the same, denoted as the second duplexer 1 and the second duplexer 2.
  • Example 2 The electrical connection relationship of Example 2 is:
  • the input terminal IN of bridge 1 is connected to the antenna, the isolating terminal ISO is connected to the input terminal IN of bridge 4, the 0 degree output terminal of bridge 1 is connected to port 1 of the first duplexer 1, and the -90 degree output terminal of bridge 1 Connect to port 1 of the first duplexer 2.
  • the 2 ports of the first duplexer 1 and the 2 ports of the first duplexer 2 are connected to the input terminal IN and the isolation terminal ISO of the bridge 2 respectively.
  • the 0 degree output port of the bridge 2 is connected to a 50 ohm resistor and then grounded.
  • the -90-degree output port of bridge 2 is connected to the first transmitting port TX1, the 3-port of the first duplexer 1 is connected to port a, and the 3-port of the first duplexer 2 is connected to a 90-degree phase shifter followed by port b, port A and port b together form the first differential receiving port RX1, thereby forming the transmitting end and the differential receiving end of the first duplexer.
  • the signal transmitted from TX1 will be divided into two channels after passing through the bridge 2.
  • the amplitude is equal, the phase difference is 90 degrees, and the phase lags behind.
  • the 90-degree signal will enter from port 2 of the first duplexer 1, exit from port 3 of the first duplexer 1, and connect to port a of the differential port, and the other signal will have no phase after passing through the bridge 2.
  • Change this signal enters from port 2 of the first duplexer 2, exits from port 3 of the first duplexer 2, and then reaches port b of the differential port after passing through a 90-degree phase shifter.
  • the two signals amplitude The same, the phase is the same.
  • the phase imbalance of the 90-degree phase shifters currently on the market is basically less than 3 degrees, and the transceiver isolation It can be improved by about 20dB. Since the transmitted signal passes through the bridge 2, the signal enters the duplexer in two ways. If each duplexer reaches its power limit, the power capacity of the topology can be doubled. The power capacity is doubled, and the isolation is increased by 20dB. This topology is particularly suitable for base station applications.
  • the input end IN of the bridge 4 is connected to the isolation end ISO of the bridge 1, the isolation end ISO of the bridge 4 is connected to a 50 ohm resistor and then grounded, and the 0 degree output end of the bridge 4 is connected to the 1 of the second duplexer 1.
  • the -90 degree output terminal of the bridge 4 is connected to the 1 port of the second duplexer 2.
  • the 2 ports of the second duplexer 1 and the 2 ports of the second duplexer 2 are respectively connected to the input terminal IN and the isolation terminal ISO of the bridge 3, and the 0 degree output port of the bridge 3 is connected to a 50 ohm resistor and then grounded.
  • the -90 degree output port of Bridge 3 is connected to the second transmitting port TX2.
  • the 3-port of the second duplexer 1 is connected to port c,
  • Port 3 of the second duplexer 2 is connected to a 90-degree phase shifter followed by port d,
  • the port c and the port d together form the second differential receiving port RX2, thereby forming the transmitting end and the receiving end of the second duplexer.
  • the principle of the quadruplexer topology to improve the transceiver isolation of the second duplexer is as follows: the signal transmitted from TX2 will be divided into two channels after passing through the bridge 3, the amplitude is equal, the phase difference is 90 degrees, and the phase lags behind.
  • the 90-degree signal will enter from port 2 of the second duplexer 1, exit from port 3 of the second duplexer 1, and connect to port c of the differential port, and the other signal will have no phase after passing through the bridge 3. Change, this signal enters from port 2 of the second duplexer 2, exits from port 3 of the second duplexer 2, and then reaches port d of the differential port after passing through a 90-degree phase shifter.
  • the two signals have amplitudes Same and same phase.
  • port c and port d form a differential port, the two signals can be completely cancelled out.
  • the phase imbalance of the current 90-degree bridges on the market is less than 3 degrees, and the transceiver isolation can be improved by 20dB about.
  • the transmitted signal passes through the bridge 3, the signal enters the duplexer in two ways. If each duplexer reaches its power limit, the topological power capacity of the quadruplexer can be doubled. The power capacity is doubled, and the isolation is increased by 20dB.
  • the topology of such a quadruple is particularly suitable for base station applications.

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Transceivers (AREA)

Abstract

本发明提供一种四工器的拓扑结构，包括：第一拓扑结构和第二拓扑结构；第一拓扑结构包括第一电桥、第二移相元件、第三移相元件和第一双工器、第三双工器；第二拓扑结构包括第四电桥、第五移相元件、第六移相元件和第二双工器、第四双工器。采用本发明技术方案，发射端和接收端的隔离度和双工器的隔离度无关，只取决于电桥和移相元件的相位不平衡度，因此能同时提高隔离度和功率容量，隔离度可以提高20dB左右，而功率容量可以提升1倍左右。有望在未来5G的小基站系统中得到广泛应用。

Description

四工器的拓扑结构 技术领域
本发明涉及体声波滤波器技术领域，尤其是涉及一种四工器的拓扑结构。
背景技术
随着无线通信技术的发展，人们对于数据传输速率的要求越来越高，与数据传输速率相对应的是频谱资源的高利用率和频谱的复杂化。通信协议的复杂化对于射频系统各模块的性能提出了严格的要求，在射频前端模块，射频滤波器起着至关重要的作用，它可以将带外干扰和噪声滤除掉以满足射频系统和通信协议对于信噪比的要求，改善通信质量，提高用户体验。同时系统除了对滤波器性能上有较高的要求外，还对体积尺寸提出较高的要求，而体声波滤波器刚好可以满足其要求。体声波谐振器利用压电晶体的压电效应产生谐振。由于谐振由机械波产生，而非电磁波作为谐振来源，机械波的波长比电磁波波长短很多。因此，体声波谐振器及其组成的滤波器体积相对传统的电磁滤波器尺寸大幅度减小。另一方面，由于压电晶体的晶向生长目前能够良好控制，谐振器的损耗极小，品质因数高，能够应对陡峭过渡带和低插入损耗等复杂设计要求。由于体声波滤波器具有的尺寸小、高滚降、低插损等特性，以此为核心的体声波滤波器在通讯系统中得到了广泛的应用。
未来的5G通信中，小基站系统成为重要的组成部分，小基站系统将采用较高的发射频率，由于空间衰减的原因，必然会加大发射信号的功率，为了提高接收机的灵敏度，必然对收发隔离度提出更高的要求，所以未来小基站系统必然要求滤波器、多工器尺寸要小，功率容量要高，隔离度要高，成本较低，目前基站系统中主要使用的是腔体 滤波器、腔体多工器，腔体结构的滤波器、多工器插损小、带外抑制好、隔离度高，但其一个显著缺点是尺寸较大，加工成本高，很难在未来的5G通信中得到广泛应用，而体声波滤波器、多工器的特点是插损好、带外抑制高、成本较低，但其一个显著缺点是功率容量较差，目前功率容量只有1.5W左右，很难适应未来5G通信的要求。
因此，如何用体声波滤波器技术，除了提高多工器的隔离度以外，还要较大幅度提升其功率容量，仍是待解决的技术问题。
发明内容
有鉴于此，本发明提供一种四工器的拓扑结构，目的在于针对当前常规四工器的拓扑结构的四工器隔离度只有60dB，功率容量只有1.5W左右，很难适用于未来5G小基站系统的现状，提出了能同时提高隔离度和功率容量的结构，隔离度可以提高20dB左右，而功率容量可以提升1倍左右。有望在未来5G的小基站系统中得到广泛应用。
基于上述目的，本发明提供以下技术方案：
一种四工器的拓扑结构，包括：第一拓扑结构和第二拓扑结构；第一拓扑结构包括第一电桥、第二移相元件、第三移相元件和第一双工器、第三双工器；第二拓扑结构包括第四电桥、第五移相元件、第六移相元件和第二双工器、第四双工器；第一电桥和第四电桥均为九十度电桥；第一电桥的输入端连接天线，隔离端连接第四电桥的输入端；第四电桥的隔离端连接电阻后接地；第一电桥的零度输出端和负九十度输出端分别连接第一双工器和第三双工器的天线端端口；第四电桥的零度输出端和负九十度输出端分别连接第二双工器和第四双工器的天线端端口；第一双工器和第三双工器的射频发射端口分别通过第二移相元件形成第一发射端口；第二双工器和第四双工器的射频发射端口分别通过第五移相元件形成第二发射端口；第一双工器和第三双工器的射频接收端口分别通过第三移相元件形成第一接收端口；第 二双工器和第四双工器的射频接收端口分别通过第六移相元件形成第二接收端口。
以图2所示电路为例，第一拓扑结构包括第一电桥(电桥1)、第二移相元件(电桥2)和第一双工器(第一双工器1)、第三双工器(第一双工器2)、第三移相元件(电桥3)；第二拓扑结构包括第四电桥(电桥4)、第五移相元件(电桥5)和第二双工器(第二双工器1)、第四双工器(第二双工器2)、第六移相元件(电桥6)；第一电桥和第四电桥均为九十度电桥；第一电桥的输入端连接天线，隔离端连接第四电桥的输入端；第四电桥的隔离端连接电阻后接地；第一电桥的零度输出端和负九十度输出端分别连接两个第一双工器的天线端端口；第四电桥的零度输出端和负九十度输出端分别连接两个第二双工器的天线端端口；第一双工器和第三双工器的射频发射端口分别通过第二移相元件形成第一发射端口；第二双工器和第四双工器的射频发射端口分别通过第五移相元件形成第二发射端口；第一双工器和第三双工器的射频接收端口分别通过第三移相元件形成第一接收端口；第二双工器和第四双工器的射频接收端口分别通过第六移相元件形成第二接收端口。
可选地，第二移相元件和第五移相元件分别为九十度的第二电桥和第五电桥，即，可以根据图1的形式，具体分别为电桥2和电桥5。
可选地，第一双工器的射频发射端口连接第二电桥的输入端；第三双工器的射频发射端口连接第二电桥的隔离端；第二双工器的射频发射端口连接第五电桥的输入端；第四双工器的射频发射端口连接第五电桥的隔离端；第二电桥和第五电桥的零度输出端口分别连接电阻后接地；第二电桥的负九十度输出端口连接第一发射端口；第五电桥的负九十度输出端口连接第二发射端口。
可选地，第三移相元件和第六移相元件分别为第三电桥和第六电 桥，即，可以根据图1的形式，具体分别为电桥3和电桥6。
可选地，第一双工器的射频接收端口连接第三电桥的输入端；第三双工器的射频接收端口连接第三电桥的隔离端；第二双工器的射频接收端口连接第六电桥的输入端；第四双工器的射频接收端口连接第六电桥的隔离端；第三电桥和第六电桥的零度输出端口分别连接电阻后接地；第三电桥的负九十度输出端口连接第一接收端口；第六电桥的负九十度输出端口连接第二接收端口。
可选地，第三移相元件和第六移相元件分别为第三九十度移相器和第六九十度移相器，即，可以根据图12的形式，分别选用图中b端和d端的90度移相器。
可选地，第三双工器的射频接收端口连接第三九十度移相器后与第一双工器的射频接收端口形成第一差分接收端口；第四双工器的射频接收端口连接第六九十度移相器后与第二双工器的射频接收端口形成第二差分接收端口。
可选地，第一双工器和第三双工器结构相同，电性能相同；第二双工器和第四双工器结构相同，电性能相同。
可选地，所述电阻为五十欧姆电阻。
可选地，第一电桥和第四电桥的相位不平衡度小于三度。
根据本发明的技术方案，能同时提高隔离度和功率容量，隔离度可以提高20dB左右，而功率容量可以提升1倍左右。有望在未来5G的小基站系统中得到广泛应用。
附图说明
附图用于更好地理解本发明，不构成对本发明的不当限定。其中：
图1是现有技术示意图；
图2是本实施例1的四工器的拓扑结构；
图3是九十度电桥示意图；
图4为Band1的TX频段插损对比图；
图5为Band1的RX频段插损对比图；
图6为Band1的TX与RX频段隔离度对比图；
图7为Band3的TX频段插损对比图；
图8为Band3的RX频段插损对比图；
图9为Band3的TX与RX频段隔离度对比图；
图10为Band3的TX与Band1的RX频段交叉隔离度对比图；
图11为Band1的TX与Band3的RX频段交叉隔离度对比图；
图12为本实施例2的四工器的拓扑结构；
图13为九十度电桥各端口之间的相位关系。
具体实施方式
目前，实现四工器常规的技术手段是把两个双工器并联，如图1所示，第一双工器覆盖一个发射频段和一个接收频段，第二双工器覆盖一个另外的发射频段和一个另外的接收频段，这样的四工器的拓扑结构虽然简单，但四工器的性能完全决定于双工器的性能，如果双工器隔离度较差的话，四工器的隔离度就一定差，同时这样的拓扑结构功率容量完全决定于构成双工器的滤波器的功率容量，所以功率容量也较差，难以满足未来5G的应用。
实施例1：
图2为本实施例1的四工器的拓扑结构，主要由6个90度电桥和4个双工器组成，以构成高功率、高隔离度的四工器，其中6个90度电桥完全相同，分别为电桥1、电桥2、电桥3、电桥4、电桥5、电桥6(即第一电桥、第二电桥、第三电桥、第四电桥、第五电桥、第六电桥)，而4个双工器中其中2个双工器相同，记为第一双工器1和第 一双工器2，另外2个双工器完全一样，记为第二双工器1和第二双工器2。90度电桥如图3所示，有4个端口，分别为J1、J2、J3、J4，如果J1作为输入端，则J4端口为隔离度，J2和J3为输出端，这两个端口的输出信号幅度相等，相位相差90度，具体是J3端口输出为0度，J2输出为-90度。其实90度电桥是互易的，任何一个端口都可以作为输入端的，相应的隔离端和输出端也会随着输入端口的改变而改变，如图13的表1即为90度电桥各端口之间的相位关系。
实施例1的电气连接关系为：
电桥1的输入端IN接天线，隔离端ISO接电桥4的输入端IN，电桥1的0度输出端接第一双工器1的1端口，电桥1的-90度输出端接第一双工器2的1端口。第一双工器1的2端口和第一双工器2的2端口分别接电桥2的输入端IN和隔离端ISO，电桥2的0度输出端口接50欧姆的电阻后接地，电桥2的-90度输出端口接第一发射端口TX1。
同样地，第一双工器1的3端口和第一双工器2的3端口分别接电桥3的输入端IN和隔离端ISO，电桥3的0度输出端口接50欧姆的电阻后接地，电桥3的-90度输出端口接第一接收端口RX1，由此形成了第一双工器的发射端和接收端。
此四工器的拓扑结构提高第一双工器收发隔离度的原理是这样的：从TX1发射的信号，则经过电桥2后一分两路，幅度相等，相位相差90度，相位落后90度的那路信号会从第一双工器1的2端口进入，从第一双工器1的3端口出，再经过电桥3又移相90度后到达RX1端，而另一路经过电桥2后，没有相位变化，此路信号从第一双工器2的2端口进入，从第一双工器2的3端口出，再经过电桥3无移相后到达RX1端，这两路信号，幅度相等，相位相差180度，理论上可以完全抵消，也就是说，TX1和RX1端的隔离度和双工器的隔离度无关，只取决于90度电桥的相位不平衡度，90度电桥的相位不平衡度会对相位抵消产生较大的影响，目前市面上的90度电桥的相位不平衡度都小于3度，收发隔离度可以改善20dB左右。由于发射信号经过电桥2后，信号一分两路进入双工器，如果每路双工器达到其功率极限的情况下，则该拓扑结构功率容量可以提升1倍。功率容量提升1倍，隔离度提 高20dB，这样的拓扑结构特别适合未来5G小基站类应用。
同样地，电桥4的输入端IN接电桥1的隔离端ISO，电桥4的隔离端ISO接50欧姆电阻后接地，电桥4的0度输出端接第二双工器1的1端口，电桥4的-90度输出端接第二双工器2的1端口。第二双工器1的2端口和第二双工器2的2端口分别接电桥5的输入端IN和隔离端ISO，电桥5的0度输出端口接50欧姆的电阻后接地，电桥5的-90度输出端口接第二发射端口TX2。
同样地，第二双工器1的3端口和第二双工器2的3端口分别接电桥6的输入端IN和隔离端ISO，电桥6的0度输出端口接50欧姆的电阻后接地，电桥6的-90度输出端口接第二接收端口RX2。
此四工器的拓扑结构提高第二双工器收发隔离度的原理是这样的：从TX2发射的信号，则经过电桥5后会一分两路，幅度相等，相位相差90度，相位落后90度的那路信号会从第二双工器1的2端口进入，从第二双工器1的3端口出，再经过电桥6又移相90度后到达RX2端，而另一路经过电桥5后，没有相位变化，此路信号从第二双工器2的2端口进入，从第二双工器2的3端口出，再经过电桥6无移相后到达RX2端，这两路信号，幅度相等，相位相差180度，理论上可以完全抵消，也就是说，TX2和RX2端的隔离度和双工器的隔离度无关，只取决于90度电桥的相位不平衡度，要说明的是，90度电桥的相位不平衡度会对相位抵消产生较大的影响，目前市面上的90度电桥的相位不平衡度基本上都小于3度，即移相范围大致在87度至93度，收发隔离度可以改善20dB左右。由于发射信号经过电桥2后，信号一分两路进入双工器，如果每路双工器达到其功率极限的情况下，则该拓扑结构功率容量可以提升1倍。功率容量提升1倍，隔离度提高20dB，这样的拓扑结构特别适合基站类应用。
另外需要说明的是，第一双工器和第二双工器之间的隔离原理如下：从TX2发射信号，经过电桥5和第二双工器1、第二双工器2后再通过电桥4在电桥4的IN端形成发射信号，再经过电桥1的ISO端，分为两路信号，这两路信号会被第一双工器1、第一双工器2全反射，后进入天线端，同样如果接收的是RX2信号，同样会被第一双工器1、 第一双工器2全反射然后进入电桥1的ISO端，然后在经过电桥4、第二双工器1、第二双工器2和电桥6进入RX2端。
为了验证本实施方式的技术效果，发明人做了一个仿真，第一双工器为Band1，其TX频段包括：1920MHz-1980MHz,RX频段包括：2110MHz-2170MHz，第二双工器为Band3，其TX频段包括：1710MHz-1785MHz，RX频段包括：1805MHz-1880MHz。90度电桥的插损为0.3dB，相位不平衡度为3度。
图4为Band1的TX频段插损对比图，图中实线为常规四工器的插损，图中虚线为本实施例1的仿真结果，由于引入了90度电桥，插损掉落了0.5dB。
图5为Band1的RX频段插损对比图，图中实线为常规四工器的插损，图中虚线为本实施例1的仿真结果，由于引入了90度电桥，插损掉落了0.5dB。
图6为Band1的TX与RX频段隔离度对比图，图中实线为常规四工器的隔离度，图中虚线为本实施例1的仿真结果，从对比发现，隔离度改善22dB以上。
图7为Band3的TX频段插损对比图，图中实线为常规四工器的插损，图中虚线为本实施例1的仿真结果，由于引入了90度电桥，插损掉落了0.5dB。
图8为Band3的RX频段插损对比图，图中实线为常规四工器的插损，图中虚线为本实施例1的仿真结果，由于引入了90度电桥，插损掉落了0.5dB。
图9为Band3的TX与RX频段隔离度对比图，图中实线为常规四工器的隔离度，图中虚线为本实施例1的仿真结果，从对比发现，隔离度改善22dB以上。
图10为Band3的TX与Band1的RX频段交叉隔离度对比图，图中实线为常规四工器的隔离度，图中虚线为本实施例1的仿真结果，从对比发现，隔离度改善22dB以上。
图11为Band1的TX与Band3的RX频段交叉隔离度对比图，图中实线为常规四工器的隔离度，图中虚线为本实施例1的仿真结果， 从对比发现，隔离度改善22dB以上。
对于电桥2、3、5和6，其中的1个或几个还可以替换为90度移相器。以下再举例加以说明。
实施例2：
图12为本实施例2的四工器的拓扑结构，主要由4个90度电桥、2个90度移相器和4个双工器组成，以构成高功率、高隔离度的四工器，其中4个90度电桥完全相同，分别为电桥1、电桥2、电桥3、电桥4，而4个双工器中其中2个双工器相同，记为第一双工器1和第一双工器2，另外2个双工器完全一样，记为第二双工器1和第二双工器2。
实施例2的电气连接关系为：
电桥1的输入端IN接天线，隔离端ISO接电桥4的输入端IN，电桥1的0度输出端接第一双工器1的1端口，电桥1的-90度输出端接第一双工器2的1端口。第一双工器1的2端口和第一双工器2的2端口分别接电桥2的输入端IN和隔离端ISO，电桥2的0度输出端口接50欧姆的电阻后接地，电桥2的-90度输出端口接第一发射端口TX1，第一双工器1的3端口连接端口a，第一双工器2的3端口连接一段90度移相器后接端口b,端口a和端口b一起形成第一差分接收端口RX1，由此形成了第一双工器的发射端和差分接收端。
此四工器的拓扑结构提高第一双工器收发隔离度的原理是这样的：从TX1发射的信号，则经过电桥2后会一分两路，幅度相等，相位相差90度，相位落后90度的那路信号会从第一双工器1的2端口进入，从第一双工器1的3端口出，接入差分端口的端口a，而另一路经过电桥2后，没有相位变化，此路信号从第一双工器2的2端口进入，从第一双工器2的3端口出，再经过90度移相器后到达差分端口的端口b，这两路信号，幅度相等，相位相同，由于端口a和端口b形成的是差分端口，所以这两路信号可以完全抵消，目前市面上的90度移相器的相位不平衡度基本上都小于3度，收发隔离度可以改善20dB左右。由于发射信号经过电桥2后，信号一分两路进入双工器，如果每路双 工器达到其功率极限的情况下，则该拓扑结构功率容量可以提升1倍。功率容量提升1倍，隔离度提高20dB，这样的拓扑结构特别适合基站类应用。
同样地，电桥4的输入端IN接电桥1的隔离端ISO，电桥4的隔离端ISO接50欧姆电阻后接地，电桥4的0度输出端接第二双工器1的1端口，电桥4的-90度输出端接第二双工器2的1端口。第二双工器1的2端口和第二双工器2的2端口分别接电桥3的输入端IN和隔离端ISO，电桥3的0度输出端口接50欧姆的电阻后接地，电桥3的-90度输出端口接第二发射端口TX2。
同样地，第二双工器1的3端口连接端口c，
第二双工器2的3端口连接一段90度移相器后接端口d，
端口c和端口d一起形成第二差分接收端口RX2，由此形成了第二双工器的发射端和接收端。
此四工器的拓扑结构提高第二双工器收发隔离度的原理是这样的：从TX2发射的信号，则经过电桥3后会一分两路，幅度相等，相位相差90度，相位落后90度的那路信号会从第二双工器1的2端口进入，从第二双工器1的3端口出，接入差分端口的端口c，而另一路经过电桥3后，没有相位变化，此路信号从第二双工器2的2端口进入，从第二双工器2的3端口出，再经过90度移相器后到达差分端口的端口d，这两路信号，幅度相等，相位相同，由于端口c和端口d形成的是差分端口，所以这两路信号可以完全抵消，目前市面上的90度电桥的相位不平衡度都小于3度，收发隔离度可以改善20dB左右。由于发射信号经过电桥3后，信号一分两路进入双工器，如果每路双工器达到其功率极限的情况下，则该四工器的拓扑结构功率容量可以提升1倍。功率容量提升1倍，隔离度提高20dB，这样的四工器的拓扑结构特别适合基站类应用。
上述具体实施方式，并不构成对本发明保护范围的限制。本领域技术人员应该明白的是，取决于设计要求和其他因素，可以发生各种各样的修改、组合、子组合和替代。任何在本发明的精神和原则之内所作的修改、等同替换和改进等，均应包含在本发明保护范围之内。

Claims (10)

  1. 一种四工器的拓扑结构，其特征在于，包括：第一拓扑结构和第二拓扑结构；
    第一拓扑结构包括第一电桥、第二移相元件、第三移相元件和第一双工器、第三双工器；
    第二拓扑结构包括第四电桥、第五移相元件、第六移相元件和第二双工器、第四双工器；
    第一电桥和第四电桥均为九十度电桥；
    第一电桥的输入端连接天线，隔离端连接第四电桥的输入端；第四电桥的隔离端连接电阻后接地；
    第一电桥的零度输出端和负九十度输出端分别连接第一双工器、第三双工器的天线端端口；
    第四电桥的零度输出端和负九十度输出端分别连接第二双工器、第四双工器的天线端端口；
    第一双工器和第三双工器的射频发射端口分别通过第二移相元件形成第一发射端口；
    第二双工器和第四双工器的射频发射端口分别通过第五移相元件形成第二发射端口；
    第一双工器和第三双工器的射频接收端口分别通过第三移相元件形成第一接收端口；
    第二双工器和第四双工器的射频接收端口分别通过第六移相元件形成第二接收端口。
  2. 根据权利要求1所述的四工器的拓扑结构，其特征在于，第二移相元件和第五移相元件分别为九十度的第二电桥和第五电桥。
  3. 根据权利要求2所述的四工器的拓扑结构，其特征在于，
    第一双工器的射频发射端口连接第二电桥的输入端；第三双工器的射频发射端口连接第二电桥的隔离端；
    第二双工器的射频发射端口连接第五电桥的输入端；第四双工器的射频发射端口连接第五电桥的隔离端；
    第二电桥和第五电桥的零度输出端口分别连接电阻后接地；
    第二电桥的负九十度输出端口连接第一发射端口；第五电桥的负九十度输出端口连接第二发射端口。
  4. 根据权利要求2所述的四工器的拓扑结构，其特征在于，第三移相元件和第六移相元件分别为第三电桥和第六电桥。
  5. 根据权利要求4所述的四工器的拓扑结构，其特征在于，
    第一双工器的射频接收端口连接第三电桥的输入端；第三双工器的射频接收端口连接第三电桥的隔离端；
    第二双工器的射频接收端口连接第六电桥的输入端；第四双工器的射频接收端口连接第六电桥的隔离端；
    第三电桥和第六电桥的零度输出端口分别连接电阻后接地；
    第三电桥的负九十度输出端口连接第一接收端口；第六电桥的负九十度输出端口连接第二接收端口。
  6. 根据权利要求2所述的四工器的拓扑结构，其特征在于，第三移相元件和第六移相元件分别为第三九十度移相器和第六九十度移相器。
  7. 根据权利要求6所述的四工器的拓扑结构，其特征在于，
    第三双工器的射频接收端口连接第三九十度移相器后与第一双工器的射频接收端口形成第一接收差分端口；
    第四双工器的射频接收端口连接第六九十度移相器后与第二双工器的射频接收端口形成第二接收差分端口。
  8. 根据权利要求1所述的四工器的拓扑结构，其特征在于，
    第一双工器和第三双工器结构相同，电性能相同；
    第二双工器和第四双工器结构相同，电性能相同。
  9. 根据权利要求1至8中任一项所述的四工器的拓扑结构，其特征在于，所述电阻为五十欧姆电阻。
  10. 根据权利要求1至8中任一项所述的四工器的拓扑结构，其特征在于，第一电桥和第四电桥的相位不平衡度小于三度。
PCT/CN2020/141262 2020-01-21 2020-12-30 四工器的拓扑结构 WO2021147632A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202010069402.2A CN111181523B (zh) 2020-01-21 2020-01-21 四工器的拓扑结构
CN202010069402.2 2020-01-21

Publications (1)

Publication Number Publication Date
WO2021147632A1 true WO2021147632A1 (zh) 2021-07-29

Family

ID=70658096

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/141262 WO2021147632A1 (zh) 2020-01-21 2020-12-30 四工器的拓扑结构

Country Status (2)

Country Link
CN (1) CN111181523B (zh)
WO (1) WO2021147632A1 (zh)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111181523B (zh) * 2020-01-21 2020-11-13 诺思(天津)微系统有限责任公司 四工器的拓扑结构
CN112134582B (zh) * 2020-09-15 2021-07-13 上海鸿晔电子科技股份有限公司 一种跳频多工器及其控制方法
CN112543012B (zh) * 2020-12-09 2022-03-15 诺思(天津)微系统有限责任公司 复用双工器以及通信设备
CN115051716B (zh) * 2021-03-09 2023-11-28 诺思(天津)微系统有限责任公司 多工器和通信设备
CN114722755A (zh) * 2022-03-11 2022-07-08 电子科技大学 一种低损耗薄膜体声波磁电谐振器的设计方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160209818A1 (en) * 2015-01-20 2016-07-21 Sony Corporation Method and system for management of an electronic system
CN107871919A (zh) * 2017-10-13 2018-04-03 成都九洲迪飞科技有限责任公司 输入和输出端口相差90o的双工器
CN109755746A (zh) * 2018-12-29 2019-05-14 华南理工大学 馈电网络和三波束天线
CN111181523A (zh) * 2020-01-21 2020-05-19 诺思(天津)微系统有限责任公司 四工器的拓扑结构
CN111313863A (zh) * 2020-02-27 2020-06-19 诺思(天津)微系统有限责任公司 一种可重构的多工器及通信设备

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160209818A1 (en) * 2015-01-20 2016-07-21 Sony Corporation Method and system for management of an electronic system
CN107871919A (zh) * 2017-10-13 2018-04-03 成都九洲迪飞科技有限责任公司 输入和输出端口相差90o的双工器
CN109755746A (zh) * 2018-12-29 2019-05-14 华南理工大学 馈电网络和三波束天线
CN111181523A (zh) * 2020-01-21 2020-05-19 诺思(天津)微系统有限责任公司 四工器的拓扑结构
CN111313863A (zh) * 2020-02-27 2020-06-19 诺思(天津)微系统有限责任公司 一种可重构的多工器及通信设备

Also Published As

Publication number Publication date
CN111181523B (zh) 2020-11-13
CN111181523A (zh) 2020-05-19

Similar Documents

Publication Publication Date Title
WO2021147632A1 (zh) 四工器的拓扑结构
US9590794B2 (en) Enhancing isolation and impedance matching in hybrid-based cancellation networks and duplexers
US10581650B2 (en) Enhancing isolation in radio frequency multiplexers
US9438288B2 (en) System providing reduced intermodulation distortion
US8462755B2 (en) Duplexer/multiplexer having filters that include at least one band reject filter
CN111313863B (zh) 一种可重构的多工器及通信设备
US10944378B2 (en) Duplexer
WO2015127097A1 (en) Miniature acoustic resonator-based filters and duplexers
WO2020125344A1 (zh) 基于移相网络提高隔离度的射频压电多工器和电子设备
Takai et al. Investigations on design technologies for SAW quadplexer with narrow duplex gap
WO2021013571A1 (en) Saw/baw hybrid rf receiving filter, rf duplexer and rf multiplexer
KR102071885B1 (ko) 평형구조 및 광대역 0°/180° 전력분배기를 이용한 동일대역 비자성체 전이중통신 무선 전단부 회로
De Silva et al. A passive STAR microwave circuit for 1-3 GHz self-interference cancellation
Elzayat et al. Tx/Rx isolation enhancement based on a novel balanced duplexer architecture
WO2016012837A1 (en) Radio frequency multiplexer and receiver filter
US9455485B2 (en) Non-reciprocal circuit element, module of the same, and transmission and reception module
CN115051716B (zh) 多工器和通信设备
KR20240032160A (ko) Hf 회로, 및 hf 회로를 포함하는 프론트-엔드 회로
Regev et al. Analysis of transmit and receive implementation losses in full duplex wireless transceivers
TWM596461U (zh) 物聯網雙工器
CN213636255U (zh) 一种三频合路器
CN215344571U (zh) 应用于载波聚合的四路复用器
US11271541B2 (en) Microwave duplexer using coupled inductors to improve isolation
KR20220124479A (ko) 내전력성이 향상된 듀플렉서
WO2020093881A1 (zh) 一种物联网双工器

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20915679

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205 DATED 22.11.2022)

122 Ep: pct application non-entry in european phase

Ref document number: 20915679

Country of ref document: EP

Kind code of ref document: A1