A dual-frequency full-duplex millimeter wave transceiver

Abstract

The present invention provides a dual-frequency full-duplex millimeter wave transceiver, including two full-duplex millimeter wave chips and two full-duplex antennas. The full-duplex antenna is a dual-frequency full-duplex antenna. The full-duplex millimeter wave chip includes a modulator, a dual-frequency voltage-controlled oscillator module, a dual-frequency power amplifier, a dual-frequency matching output network, a dual-frequency matching input network, a dual-frequency low-noise amplifier and a packet detector. The output end of the modulator is connected to the control end of the dual-frequency power amplifier, the dual-frequency voltage-controlled oscillator module, the dual-frequency power amplifier, the dual-frequency matching output network and the duplex antenna are connected in sequence, and the full-duplex antenna, the dual-frequency low-noise amplifier and the packet detector are connected in sequence. Full-duplex crosstalk is suppressed by full-duplex antennas of different frequencies and full-duplex millimeter wave chip circuits of different frequencies, and there is no need to specially design antennas, thereby solving the problem of difficult antenna design. The same full-duplex millimeter wave chip is used for transmission and reception, which can effectively realize chip reuse.

Description

Technical Field

[0001] The present invention relates to the field of millimeter wave technology, and in particular to a dual-frequency full-duplex millimeter wave transceiver. Background Art

[0002] Existing full-duplex transceivers use full-duplex antennas for signal transmission. Full-duplex antennas are usually composed of two orthogonally polarized antennas (vertically polarized antennas and horizontal vertical antennas) or two reversely polarized antennas (left-hand polarized antennas and right-hand polarized antennas). However, the effect of full-duplex antennas in the millimeter wave band is poor, and coupled with packaging limitations, existing full-duplex millimeter wave transceivers generally have crosstalk problems. There are currently studies on suppressing crosstalk through antenna design, but the design of antennas that can avoid crosstalk is difficult and complex. Summary of the invention

[0003] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a dual-frequency full-duplex millimeter wave transceiver that can solve the problems of full-duplex crosstalk and difficult antenna design in the millimeter wave band.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0005] A dual-frequency full-duplex millimeter wave transceiver comprises two full-duplex millimeter wave chips and two full-duplex antennas, wherein the two full-duplex millimeter wave chips are respectively connected to different full-duplex antennas, and the two full-duplex antennas are communicatively connected. The full-duplex antennas are dual-frequency full-duplex antennas, and the full-duplex millimeter wave chip comprises a modulator, a dual-frequency voltage-controlled oscillator module, a dual-frequency power amplifier, a dual-frequency matching output network, a dual-frequency matching input network, a dual-frequency low-noise amplifier and a packet detector. The output end of the modulator is connected to the control end of the dual-frequency power amplifier, the input end of the dual-frequency power amplifier is connected to the dual-frequency voltage-controlled oscillator module, the output end of the dual-frequency power amplifier is connected to the input end of the dual-frequency matching output network, the output end of the dual-frequency matching input network is connected to the input end of the dual-frequency low-noise amplifier, the output end of the dual-frequency low-noise amplifier is connected to the packet detector, and the output end of the dual-frequency matching output network and the input end of the dual-frequency matching input network are both connected to the full-duplex antenna.

[0006] The beneficial effects of the present invention are: through the special full-duplex millimeter wave chip circuit design, different frequencies are realized, combined with dual-frequency full-duplex antennas, thereby suppressing the full-duplex crosstalk in the millimeter wave band, and no special antenna design is required, solving the problem of difficult antenna design. The same full-duplex millimeter wave chip is used for transmission and reception, which can effectively realize chip reuse. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 FIG. 1 is a system schematic diagram of a dual-frequency full-duplex millimeter wave transceiver according to Embodiment 1 of the present invention;

[0008] Figure 2 FIG. 1 is a schematic diagram of working mode 1 of a dual-frequency full-duplex millimeter wave transceiver according to Embodiment 1 of the present invention;

[0009] Figure 3 It is a schematic diagram of the working mode 2 of the dual-frequency full-duplex millimeter wave transceiver according to the first embodiment of the present invention;

[0010] Figure 4 FIG. 1 is a schematic diagram showing the operation of a full-duplex antenna according to a first embodiment of the present invention;

[0011] Figure 5 FIG. 1 is a system schematic diagram of a dual-frequency full-duplex millimeter wave transceiver according to Embodiment 2 of the present invention;

[0012] Figure 6 FIG. 1 is a schematic diagram of working mode 1 of a dual-frequency full-duplex millimeter wave transceiver according to Embodiment 2 of the present invention;

[0013] Figure 7 FIG. 2 is a schematic diagram of working mode 2 of a dual-frequency full-duplex millimeter wave transceiver according to Embodiment 2 of the present invention;

[0014] Figure 8 FIG. 1 is a system schematic diagram of a dual-frequency full-duplex millimeter wave transceiver according to Embodiment 3 of the present invention;

[0015] Fig. 9 FIG. 1 is a schematic diagram of working mode 1 of a dual-frequency full-duplex millimeter wave transceiver according to Embodiment 3 of the present invention;

[0016] Fig.10 It is a schematic diagram of the working mode 2 of the dual-frequency full-duplex millimeter wave transceiver according to the third embodiment of the present invention;

[0017] Fig.11 FIG. 4 is a system schematic diagram of a dual-frequency full-duplex millimeter wave transceiver according to a fourth embodiment of the present invention. DETAILED DESCRIPTION

[0018] In order to more clearly understand the technical content, achieved purposes and effects of the present invention, the present invention is described in detail below in conjunction with specific implementation methods and in conjunction with the accompanying drawings. It should be noted that, in the absence of conflict, the implementation methods of the present invention and the features in the implementation methods can be combined with each other. In the following description, many specific details are set forth in order to fully understand the present invention. The described implementation methods are only part of the implementation methods of the present invention, not all implementation methods. Based on the implementation methods in the present invention, all other implementation methods obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present invention.

[0019] Please refer to Figure 1-Figure 11 As shown, the technical solution provided by the present invention is:

[0020] A dual-frequency full-duplex millimeter wave transceiver comprises two full-duplex millimeter wave chips and two full-duplex antennas, wherein the two full-duplex millimeter wave chips are respectively connected to different full-duplex antennas, and the two full-duplex antennas are communicatively connected. The full-duplex antennas are dual-frequency full-duplex antennas, and the full-duplex millimeter wave chip comprises a modulator, a dual-frequency voltage-controlled oscillator module, a dual-frequency power amplifier, a dual-frequency matching output network, a dual-frequency matching input network, a dual-frequency low-noise amplifier and a packet detector. The output end of the modulator is connected to the control end of the dual-frequency power amplifier, the input end of the dual-frequency power amplifier is connected to the dual-frequency voltage-controlled oscillator module, the output end of the dual-frequency power amplifier is connected to the input end of the dual-frequency matching output network, the output end of the dual-frequency matching input network is connected to the input end of the dual-frequency low-noise amplifier, the output end of the dual-frequency low-noise amplifier is connected to the packet detector, and the output end of the dual-frequency matching output network and the input end of the dual-frequency matching input network are both connected to the full-duplex antenna.

[0021] From the above description, it can be seen that the dual-frequency full-duplex millimeter wave transceiver of the embodiment of the present invention suppresses the full-duplex crosstalk in the millimeter wave band by using full-duplex antennas of different frequencies and full-duplex millimeter wave chip circuits of different frequencies, and does not require specially designed antennas, thus solving the problem of difficult antenna design. The same full-duplex millimeter wave chip is used for transmission and reception, which can effectively realize chip reuse. By using dual-frequency full-duplex antennas, the full-duplexer commonly used in the prior art can also be omitted.

[0022] Optionally, the dual-frequency voltage-controlled oscillator module includes a voltage-controlled oscillator and a frequency doubler, the voltage-controlled oscillator is respectively connected to the input end of the frequency doubler and the input end of the dual-frequency power amplifier, and the output end of the frequency doubler is connected to the input end of the dual-frequency power amplifier.

[0023] Optionally, the dual-frequency voltage-controlled oscillator module further includes a doubled frequency power amplifier, and the doubled frequency power amplifier is connected between the output end of the doubler and the input end of the dual-frequency power amplifier.

[0024] Optionally, the dual-frequency voltage-controlled oscillator module includes a single-frequency voltage-controlled oscillator and a double-frequency voltage-controlled oscillator, and the single-frequency voltage-controlled oscillator and the double-frequency voltage-controlled oscillator are both connected to the input end of the dual-frequency power amplifier.

[0025] Optionally, the dual-frequency voltage-controlled oscillator module is a dual-frequency voltage-controlled oscillator, and the dual-frequency voltage-controlled oscillator is connected to the input end of the dual-frequency power amplifier.

[0026] It can be seen from the above description that the dual-frequency voltage-controlled oscillator module of the present invention can be implemented in the above three ways.

[0027] Optionally, the full-duplex antenna is a dual-frequency full-duplex antenna having two operating frequencies, namely, single frequency and double frequency.

[0028] Optionally, the full-duplex antenna is an orthogonal polarization antenna.

[0029] Optionally, the full-duplex antenna is a reverse polarization antenna.

[0030] From the above description, it can be known that the full-duplex antenna of the present invention can adopt an orthogonal polarization antenna or a reverse polarization antenna, and can simultaneously realize single-frequency transmission / reception and double-frequency transmission / reception.

[0031] Optionally, the full-duplex antenna is an antenna group including a first antenna and a second antenna, the output end of the dual-frequency matching output network is connected to the first antenna, and the input end of the dual-frequency matching input network is connected to the second antenna.

[0032] It can be seen from the above description that the full-duplex antenna of the present invention can be a single antenna capable of achieving full-duplex communication, or it can be an antenna combination.

[0033] Please refer to Figure 1-Figure 4 , Embodiment 1 of the present invention is:

[0034] A dual-frequency full-duplex millimeter wave transceiver, a full-duplex millimeter wave chip A1, a full-duplex millimeter wave chip A2, a full-duplex antenna B1 and a full-duplex antenna B2. The full-duplex antenna B1 and the full-duplex antenna B2 are orthogonally polarized antennas with two operating frequencies, one doubled and one doubled.

[0035] The full-duplex millimeter wave chip A1 and the full-duplex millimeter wave chip A2 are the same chip, and their components include a modulator 1, a voltage-controlled oscillator module, a dual-frequency power amplifier 3, a dual-frequency matching output network 4, a dual-frequency matching input network 5, a dual-frequency low noise amplifier 6 and a packet detector 7. The voltage-controlled oscillator module includes a voltage-controlled oscillator 211, a frequency doubler 212 and a frequency doubler power amplifier 213. The voltage-controlled oscillator 211 is connected to the input end of the frequency doubler 212 and the input end of the dual-frequency power amplifier 3 respectively, the output end of the frequency doubler 212 is connected to the input end of the frequency doubler power amplifier 213, and the output end of the frequency doubler power amplifier 213 is connected to the input end of the dual-frequency power amplifier 3. The output end of the modulator 1 is connected to the control end of the dual-frequency power amplifier 3, the output end of the dual-frequency power amplifier 3 is connected to the input end of the dual-frequency matching output network 4, the output end of the dual-frequency matching input network 5 is connected to the input end of the dual-frequency low noise amplifier 6, and the output end of the dual-frequency low noise amplifier 6 is connected to the packet detector 7. The output end of the dual-frequency matching output network 4 of the millimeter wave chip A1 and the input end of the dual-frequency matching input network 5 of the full-duplex millimeter wave chip A1 are both connected to the full-duplex antenna B1, the output end of the dual-frequency matching output network 4 of the full-duplex millimeter wave chip A2 and the input end of the dual-frequency matching input network 5 of the full-duplex millimeter wave chip A2 are both connected to the full-duplex antenna B2, and the full-duplex antenna B1 is communicatively connected with the full-duplex antenna B2.

[0036] Among them, the modulator 1, the voltage-controlled oscillator module, the dual-frequency power amplifier 3, and the dual-frequency matching output network 4 constitute the signal transmission circuit TX, and the dual-frequency matching input network 5, the dual-frequency low-noise amplifier 6, and the packet detector 7 constitute the signal receiving circuit RX. To distinguish them, the attached drawings use TX1, RX1, TX2, and RX2 to represent the signal transmission circuit and the signal receiving circuit of the full-duplex millimeter wave chip A1 and the full-duplex millimeter wave chip A2, respectively.

[0037] The input end of the modulator 1 of the full-duplex millimeter wave chip A1 is connected to the baseband signal BB1, the input end of the modulator 1 of the full-duplex millimeter wave chip A2 is connected to the baseband signal BB2, the output end of the modulator 1 of the full-duplex millimeter wave chip A1 outputs the OOK1 signal to control the dual-band power amplifier 3 of the full-duplex millimeter wave chip A1, the output end of the modulator 1 of the full-duplex millimeter wave chip A2 outputs the OOK2 signal to control the dual-band power amplifier 3 of the full-duplex millimeter wave chip A2, the output end of the packet detector 7 of the full-duplex millimeter wave chip A1 outputs the baseband signal BB2, and the output end of the packet detector 7 of the full-duplex millimeter wave chip A2 outputs the baseband signal BB1. Figure 1 shown.

[0038] Preferably, the first-time frequency is 60 GHz and the second-time frequency is 120 GHz, and both frequency bands are currently free frequency bands.

[0039] The two operating modes of the dual-frequency full-duplex millimeter wave transceiver of this embodiment are described below.

[0040] Working mode 1 means that the full-duplex millimeter wave chip A1 sends signals at one frequency and receives signals at two frequencies, and the full-duplex millimeter wave chip A2 sends signals at two frequencies and receives signals at one frequency. Figure 2 As shown:

[0041] The voltage controlled oscillator 211 of the full-duplex millimeter wave chip A1 generates a frequency f LO The carrier is input to the dual-band power amplifier 3, and the baseband signal BB1 is modulated by the modulator 1 into an OOK1 signal to control the dual-band power amplifier 3, so the dual-band power amplifier 3 will output a frequency of f LO ±BB1's signal is sent to full-duplex antenna B1 and then to full-duplex antenna B2. Full-duplex antenna B2 receives f LO The ±BB1 signals are then transmitted to the dual-band low noise amplifier 6 of the full-duplex millimeter wave chip A2 for amplification, and then demodulated by the packet detector 7 to output the BB1 ​​signal.

[0042] At the same time, the voltage controlled oscillator 211 of the full-duplex millimeter wave chip A2 generates a frequency of f LO The carrier frequency is increased to 2f by the frequency doubler 212. LO The baseband signal BB2 is then input to the dual-band power amplifier 3. The baseband signal BB2 is modulated by the modulator 1 into an OOK2 signal to control the dual-band power amplifier 3. Therefore, the dual-band power amplifier 3 will output a frequency of 2f LO ±BB2 signals are sent to full-duplex antenna B2 and then to full-duplex antenna B1. Full-duplex antenna B1 receives 2f LO The ±BB2 signals are then transmitted to the dual-band low noise amplifier 6 of the full-duplex millimeter wave chip A1 for amplification, and then demodulated by the packet detector 7 to output the BB2 signal.

[0043] Working mode 2 means that the full-duplex millimeter wave chip A1 sends signals at double frequency and receives signals at single frequency, and the full-duplex millimeter wave chip A2 sends signals at single frequency and receives signals at double frequency. Figure 3 As shown:

[0044] The voltage controlled oscillator 211 of the full-duplex millimeter wave chip A1 generates a frequency f LO The carrier frequency is increased to 2f by the frequency doubler 212. LO The baseband signal BB1 is then input to the dual-band power amplifier 3. The baseband signal BB1 is modulated by the modulator 1 into an OOK1 signal to control the dual-band power amplifier 3. Therefore, the dual-band power amplifier 3 will output a frequency of 2f LO ±BB1's signal is sent to full-duplex antenna B1 and then to full-duplex antenna B2. Full-duplex antenna B2 receives 2f LOThe ±BB1 signals are then transmitted to the dual-band low noise amplifier 6 of the full-duplex millimeter wave chip A2 for amplification, and then demodulated by the packet detector 7 to output the BB1 ​​signal.

[0045] At the same time, the voltage controlled oscillator 211 of the full-duplex millimeter wave chip A2 generates a frequency of f LO The carrier is input to the dual-band power amplifier 3, and the baseband signal BB2 is modulated by the modulator 1 into an OOK2 signal to control the dual-band power amplifier 3, so the dual-band power amplifier 3 will output a frequency of f LO ±BB2's signal is sent to full-duplex antenna B2 and then to full-duplex antenna B1. Full-duplex antenna B1 receives f LO The ±BB2 signals are then transmitted to the dual-band low noise amplifier 6 of the full-duplex millimeter wave chip A1 for amplification, and then demodulated by the packet detector 7 to output BB2.

[0046] like Figure 4 As shown, when the transmitting antenna of the full-duplex antenna B1 is a single-frequency vertical (or horizontal) polarization, the receiving antenna of the full-duplex antenna B2 is also a single-frequency vertical (or horizontal) polarization, so the transmitting antenna of the full-duplex antenna B1 and the receiving antenna of the full-duplex antenna B2 have the same frequency and polarization. When the transmitting antenna of the full-duplex antenna B2 is a double-frequency vertical (or horizontal) polarization, the receiving antenna of the full-duplex antenna B1 is also a double-frequency vertical (or horizontal) polarization, so the transmitting antenna of the full-duplex antenna B2 and the receiving antenna of the full-duplex antenna B1 have the same frequency and polarization. At this time, due to the special design of the full-duplex millimeter wave chip, the transmitting antenna of the full-duplex antenna B1 (the receiving antenna of the full-duplex antenna B2) and the transmitting antenna of the full-duplex antenna B2 (the receiving antenna of the full-duplex antenna B1) have different frequencies and polarizations. The principle of using a reverse polarized antenna is similar, so it will not be repeated here. It should be noted that the above-mentioned full-duplex antenna is only a specific implementation of this embodiment, and is not a limitation of the present invention.

[0047] Please refer to Figure 5-Figure 7 , Embodiment 2 of the present invention is:

[0048] A dual-frequency full-duplex millimeter wave transceiver, which is different from the above-mentioned embodiment 1 in that the dual-frequency voltage-controlled oscillator module includes a single-frequency voltage-controlled oscillator 221 and a double-frequency voltage-controlled oscillator 222, and the single-frequency voltage-controlled oscillator 221 and the double-frequency voltage-controlled oscillator 222 are both connected to the input end of the dual-frequency power amplifier 3. Figure 5 shown.

[0049] The following describes two working modes of the dual-frequency full-duplex millimeter wave transceiver of this embodiment. The definition of the working mode is the same as that of the first embodiment, and will not be repeated here.

[0050] Working mode is the same as Figure 6 As shown:

[0051] The full-duplex millimeter wave chip A1 only opens at a frequency of f LO The carrier wave f generated by the voltage controlled oscillator 221 is turned on, and the voltage controlled oscillator 222 is turned off. LO The baseband signal BB1 is input to the dual-band power amplifier 3, and the baseband signal BB1 is modulated by the modulator 1 into an OOK1 signal to control the dual-band power amplifier 3, so the dual-band power amplifier 3 will output a frequency of f LO ±BB1's signal reaches full-duplex antenna B1. Full-duplex antenna B2 receives f LO The ±BB1 signals are then transmitted to the dual-band low noise amplifier 6 of the full-duplex millimeter wave chip A2 for amplification, and then demodulated by the packet detector 7 to output the BB1 ​​signal.

[0052] At the same time, the full-duplex millimeter wave chip A2 only opens at a frequency of 2f LO The double frequency voltage controlled oscillator 222 is turned on, and the single frequency voltage controlled oscillator 221 is turned off. The carrier 2f generated by the double frequency voltage controlled oscillator 222 LO The baseband signal BB2 is input to the dual-band power amplifier 3, and the baseband signal BB2 is modulated by the modulator 1 into an OOK2 signal to control the dual-band power amplifier 3, so the dual-band power amplifier 3 will output a frequency of 2f LO ±BB2 signals are sent to full-duplex antenna B2. Full-duplex antenna B1 receives 2f LO The ±BB2 signals are then transmitted to the dual-band low noise amplifier 6 of the full-duplex millimeter wave chip A1 for amplification, and then demodulated by the packet detector 7 to output the BB2 signal.

[0053] Working mode 2 Figure 7 As shown:

[0054] The full-duplex millimeter wave chip A1 only operates at a frequency of 2f LO The double frequency voltage controlled oscillator 222 is turned on, and the single frequency voltage controlled oscillator 221 is turned off. The carrier 2f generated by the double frequency voltage controlled oscillator 222 LO The baseband signal BB1 is input to the dual-band power amplifier 3, and the baseband signal BB1 is modulated by the modulator 1 into an OOK1 signal to control the dual-band power amplifier 3, so the dual-band power amplifier 3 will output a frequency of 2f LO ±BB1 signals are sent to full-duplex antenna B1. Full-duplex antenna B2 receives 2f LO The ±BB1 signals are then transmitted to the dual-band low noise amplifier 6 of the full-duplex millimeter wave chip A2 for amplification, and then demodulated by the packet detector 7 to output the BB1 ​​signal.

[0055] At the same time, the full-duplex millimeter wave chip A2 only opens the frequency f LOThe carrier wave f generated by the voltage controlled oscillator 221 is turned on, and the voltage controlled oscillator 222 is turned off. LO The baseband signal BB2 is input to the dual-band power amplifier 3, and the baseband signal BB2 is modulated by the modulator 1 into an OOK2 signal for controlling the dual-band power amplifier 3. Therefore, the dual-band power amplifier 3 will output a frequency of f LO ±BB2 signals are sent to full-duplex antenna B2. Full-duplex antenna B1 receives f LO The ±BB2 signals are then transmitted to the dual-band low noise amplifier 6 of the full-duplex millimeter wave chip A1 for amplification, and then demodulated by the packet detector 7 to output the BB2 signal.

[0056] Please refer to Figure 8-Figure 10 , Embodiment 3 of the present invention is:

[0057] A dual-frequency full-duplex millimeter wave transceiver, which is different from the above-mentioned embodiment 1 in that the dual-frequency voltage-controlled oscillator module is a dual-frequency voltage-controlled oscillator 231, and the dual-frequency voltage-controlled oscillator 231 is connected to the input end of the dual-frequency power amplifier 3. Figure 8 shown.

[0058] The following describes two working modes of the dual-frequency full-duplex millimeter wave transceiver of this embodiment. The definition of the working mode is the same as that of the first embodiment, and will not be repeated here.

[0059] Working mode is the same as Fig. 9 As shown:

[0060] The carrier wave f generated by the dual-frequency voltage-controlled oscillator 231 of the full-duplex millimeter wave chip A1 LO The baseband signal BB1 is input to the dual-band power amplifier 3, and the baseband signal BB1 is modulated by the modulator 1 into an OOK1 signal to control the dual-band power amplifier 3, so the dual-band power amplifier 3 will output a frequency of f LO ±BB1's signal reaches full-duplex antenna B1. Full-duplex antenna B2 receives f LO The ±BB1 signals are then transmitted to the dual-band low noise amplifier 6 of the full-duplex millimeter wave chip A2 for amplification, and then demodulated by the packet detector 7 to output the BB1 ​​signal.

[0061] At the same time, the carrier 2f generated by the dual-frequency voltage-controlled oscillator 231 of the full-duplex millimeter wave chip A2 LO The baseband signal BB2 is input to the dual-band power amplifier 3, and the baseband signal BB2 is modulated by the modulator 1 into an OOK2 signal to control the dual-band power amplifier 3, so the dual-band power amplifier 3 will output a frequency of 2f LO ±BB2 signals are sent to full-duplex antenna B2. Full-duplex antenna B1 receives 2f LOThe ±BB2 signals are then transmitted to the dual-band low noise amplifier 6 of the full-duplex millimeter wave chip A1 for amplification, and then demodulated by the packet detector 7 to output the BB2 signal.

[0062] Working mode 2 Fig.10 As shown:

[0063] The carrier 2f generated by the dual-frequency voltage-controlled oscillator 231 of the full-duplex millimeter wave chip A1 LO The baseband signal BB1 is input to the dual-band power amplifier 3, and the baseband signal BB1 is modulated by the modulator 1 into an OOK1 signal to control the dual-band power amplifier 3, so the dual-band power amplifier 3 will output a frequency of 2f LO ±BB1 signals are sent to full-duplex antenna B1. Full-duplex antenna B2 receives 2f LO The ±BB1 signals are then transmitted to the dual-band low noise amplifier 6 of the full-duplex millimeter wave chip A2 for amplification, and then demodulated by the packet detector 7 to output the BB1 ​​signal.

[0064] At the same time, the carrier wave f generated by the dual-frequency voltage-controlled oscillator 231 of the full-duplex millimeter wave chip A2 LO The baseband signal BB2 is input to the dual-band power amplifier 3, and the baseband signal BB2 is modulated by the modulator 1 into an OOK2 signal for controlling the dual-band power amplifier 3. Therefore, the dual-band power amplifier 3 will output a frequency of f LO ±BB2 signals are sent to full-duplex antenna B2. Full-duplex antenna B1 receives f LO The ±BB2 signals are then transmitted to the dual-band low noise amplifier 6 of the full-duplex millimeter wave chip A1 for amplification, and then demodulated by the packet detector 7 to output the BB2 signal.

[0065] Please refer to Fig.11 , Embodiment 4 of the present invention is:

[0066] A dual-frequency full-duplex millimeter wave transceiver, which is different from the above-mentioned embodiment 1 in that the full-duplex antenna B1 is an antenna group composed of a first antenna TX_ANT1 and a second antenna RX_ANT1, and the full-duplex antenna B2 is an antenna group composed of a first antenna TX_ANT2 and a second antenna RX_ANT2. The output end of the dual-frequency matching output network 4 of the millimeter wave chip A1 is connected to the first antenna TX_ANT1, the input end of the dual-frequency matching input network 5 of the full-duplex millimeter wave chip A1 is connected to the second antenna RX_ANT1, the output end of the dual-frequency matching output network 4 of the full-duplex millimeter wave chip A2 is connected to the first antenna TX_ANT2, the input end of the dual-frequency matching input network 5 of the full-duplex millimeter wave chip A2 is connected to the second antenna RX_ANT2, the first antenna TX_ANT1 is communicatively connected to the second antenna RX_ANT2, and the first antenna TX_ANT2 is communicatively connected to the second antenna RX_ANT1, as Fig.11 shown.

[0067] It should be noted that the full-duplex antenna of this embodiment is also applicable to the above-mentioned embodiments 2 and 3.

[0068] In summary, the dual-frequency full-duplex millimeter wave transceiver of the present invention has the advantages of no crosstalk, no need to redesign the anti-crosstalk antenna, no need to set up a full-duplexer, and full-duplex millimeter wave chip multiplexing.

[0069] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Therefore, any modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A dual-frequency full-duplex millimeter wave transceiver, comprising two full-duplex millimeter wave chips and two full-duplex antennas, wherein the two full-duplex millimeter wave chips are respectively connected to different full-duplex antennas, and the two full-duplex antennas are connected for communication, characterized in that: The full-duplex antenna is a dual-frequency full-duplex antenna. The full-duplex millimeter wave chip includes a modulator, a dual-frequency voltage-controlled oscillator module, a dual-frequency power amplifier, a dual-frequency matching output network, a dual-frequency matching input network, a dual-frequency low-noise amplifier and a packet detector. The output end of the modulator is connected to the control end of the dual-frequency power amplifier, the input end of the dual-frequency power amplifier is connected to the dual-frequency voltage-controlled oscillator module, the output end of the dual-frequency power amplifier is connected to the input end of the dual-frequency matching output network, the output end of the dual-frequency matching input network is connected to the input end of the dual-frequency low-noise amplifier, the output end of the dual-frequency low-noise amplifier is connected to the packet detector, and the output end of the dual-frequency matching output network and the input end of the dual-frequency matching input network are both connected to the full-duplex antenna.

2. The dual-frequency full-duplex millimeter wave transceiver according to claim 1, characterized in that: The dual-frequency voltage-controlled oscillator module includes a voltage-controlled oscillator and a frequency doubler, wherein the voltage-controlled oscillator is respectively connected to the input end of the frequency doubler and the input end of the dual-frequency power amplifier, and the output end of the frequency doubler is connected to the input end of the dual-frequency power amplifier.

3. The dual-frequency full-duplex millimeter wave transceiver according to claim 2, characterized in that: The dual-frequency voltage-controlled oscillator module also includes a double-frequency power amplifier, which is connected between the output end of the doubler and the input end of the dual-frequency power amplifier.

4. The dual-frequency full-duplex millimeter wave transceiver according to claim 1, characterized in that: The dual-frequency voltage-controlled oscillator module includes a single-frequency voltage-controlled oscillator and a double-frequency voltage-controlled oscillator, and the single-frequency voltage-controlled oscillator and the double-frequency voltage-controlled oscillator are both connected to the input end of the dual-frequency power amplifier.

5. The dual-frequency full-duplex millimeter wave transceiver according to claim 1, characterized in that: The dual-frequency voltage-controlled oscillator module is a dual-frequency voltage-controlled oscillator, and the dual-frequency voltage-controlled oscillator is connected to the input end of the dual-frequency power amplifier.

6. The dual-frequency full-duplex millimeter wave transceiver according to any one of claims 1 to 5, characterized in that: The full-duplex antenna is a dual-frequency full-duplex antenna having two operating frequencies, namely, single-frequency and double-frequency.

7. The dual-frequency full-duplex millimeter wave transceiver according to claim 6, characterized in that: The full-duplex antenna is an orthogonal polarization antenna.

8. The dual-frequency full-duplex millimeter wave transceiver according to claim 6, characterized in that: The full-duplex antenna is a reverse polarization antenna.

9. The dual-frequency full-duplex millimeter wave transceiver according to any one of claims 1 to 5, characterized in that: The full-duplex antenna is an antenna group including a first antenna and a second antenna. The output end of the dual-frequency matching output network is connected to the first antenna, and the input end of the dual-frequency matching input network is connected to the second antenna.

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