Anti-interference waveguide phased array microwave assembly and antenna

Abstract

The application belongs to the technical field of antennas and provides an anti-interference through-integrated phased array microwave assembly and antenna. The anti-interference through-integrated phased array microwave assembly comprises: a through satellite transmitting unit, a through satellite receiving unit, a Beidou transmitting unit and a Beidou receiving unit which are integrally arranged on a circuit board; the transmitting channel devices of the through satellite transmitting unit and the Beidou transmitting unit are configured to form preset suppression on the through satellite receiving signal frequency band and the Beidou receiving signal frequency band respectively, so as to realize the anti-interference of the transmitting unit on the through satellite receiving unit and the Beidou receiving unit; the receiving channel devices of the through satellite receiving unit and the Beidou receiving unit are configured to form preset suppression on the through satellite transmitting signal frequency band and the Beidou transmitting signal frequency band respectively, so as to realize the anti-blocking of the receiving unit on the Beidou transmitting unit and the through satellite transmitting unit. The application can solve the problem of large volume and weight of the double-system phased array antenna in the prior art.

Description

Technical Field

[0001] This invention belongs to the field of antenna technology, and particularly relates to an anti-interference integrated phased array microwave component and antenna. Background Technology

[0002] Phased array antenna systems are typically designed in conjunction with the Tiantong satellite communication system and the BeiDou satellite navigation system. Because the Tiantong and BeiDou systems operate in adjacent frequency bands, they are prone to radio frequency interference when operating simultaneously. To avoid mutual interference between the two systems, current technologies usually deploy and implement the Tiantong and BeiDou systems as separate microwave components. Furthermore, to meet the requirements of multi-beam, multi-channel signal transmission and reception, these microwave components generally have multiple transmit and receive channels, resulting in a large overall size and weight. In applications such as aircraft, there are strict limitations on the size and weight of airborne avionics equipment. Traditional discrete, multi-channel microwave components are no longer sufficient to meet the requirements of lightweight, miniaturized, and highly integrated aircraft platforms. Summary of the Invention

[0003] In view of this, embodiments of the present invention provide an anti-interference integrated phased array microwave component and antenna to solve the problem of large size and weight of dual-system phased array antennas in the prior art.

[0004] In a first aspect, embodiments of the present invention provide an anti-interference integrated phased array microwave component, comprising: The Tiantong transmitting unit, Tiantong receiving unit, Beidou transmitting unit, and Beidou receiving unit are integrated on the circuit board. The transmission channel devices of the Tiantong transmitting unit and the Beidou transmitting unit are configured to respectively suppress the frequency bands of the Tiantong receiving signal and the Beidou receiving signal, so as to realize the anti-interference of the transmitting unit against the Tiantong receiving unit and the Beidou receiving unit. The receiving channel devices of the Tiantong receiving unit and the Beidou receiving unit are configured to respectively suppress the frequency bands of the Tiantong and Beidou transmission signals, so as to achieve the anti-blocking effect of the receiving unit on the Beidou and Tiantong transmission units.

[0005] In one possible implementation, the transmission channel devices of the Tiantong transmitting unit and the Beidou transmitting unit are configured to respectively suppress the frequency bands of the Tiantong receiving signal and the Beidou receiving signal, so as to achieve anti-interference of the transmitting unit against the Tiantong receiving unit and the Beidou receiving unit, including: The transmission channel devices of the Tiantong transmission unit and the Beidou transmission unit are configured to make the power spectral density of the Tiantong transmission signal and the Beidou transmission signal in the Tiantong receiving signal frequency band and the Beidou receiving signal frequency band less than a preset power spectral density threshold, so as to achieve anti-interference.

[0006] In one possible implementation, the receiving channel devices of the Tiantong receiving unit and the Beidou receiving unit are configured to respectively suppress the Tiantong transmission signal frequency band and the Beidou transmission signal frequency band, so as to achieve anti-blocking of the Beidou transmission unit and the Tiantong transmission unit by the receiving unit, including: The receiving channel devices of the Tiantong receiving unit and the Beidou receiving unit are configured to form a preset attenuation for the Tiantong transmission signal frequency band and the Beidou transmission signal frequency band, so that the power of the interference signal coupled to the receiving channel is lower than a preset blocking threshold, thereby achieving anti-blocking.

[0007] In one possible implementation, the Tiantong transmitting unit includes: multiple Tiantong transmitting channels; Each of the aforementioned Tiantong transmission channels includes a phase-shift attenuation multi-function chip and a Tiantong power amplifier circuit. The input terminal of the phase-shift attenuation multi-function chip is connected to the power divider circuit, and the output terminal of the phase-shift attenuation multi-function chip is connected to the Tiantong transceiver duplexer through the Tiantong power amplifier circuit.

[0008] In one possible implementation, the Tiantong receiving unit includes: multiple Tiantong receiving channels; Each of the aforementioned Tiantong receiving channels includes a Tiantong low-noise amplifier circuit. The input of the Tiantong low-noise amplifier circuit is connected to a Tiantong transceiver duplexer. The outputs of multiple Tiantong low-noise amplifier circuits are connected to an intermediate frequency processing circuit through the same multi-channel anti-interference RF chip.

[0009] In one possible implementation, the BeiDou receiving unit includes: multiple BeiDou S receiving channels and BeiDou B2b receiving channels; the BeiDou transmitting unit includes: a BeiDou L transmitting channel; The multi-channel BeiDou-S receiving channel is connected to the input terminal of the intermediate frequency processing circuit; The output of the intermediate frequency processing circuit, the output of the BeiDou B2b receiving channel, and the input of the BeiDou L transmitting channel are connected to the BeiDou tripod.

[0010] In one possible implementation, each of the BeiDou-S receiving channels includes: a BeiDou-S low-noise amplifier circuit; The input terminal of the Beidou-S low-noise amplifier circuit is used to receive Beidou-S signals. The output of the multi-channel Beidou-S low-noise amplifier circuit is connected to the input of the intermediate frequency processing circuit through the same multi-channel anti-interference RF chip.

[0011] In one possible implementation, the BeiDou B2b receiving channel includes: a BeiDou B2b low-noise amplifier circuit; the input of the BeiDou B2b low-noise amplifier circuit is used to receive BeiDou B2b signals, and the output is connected to a BeiDou tripod.

[0012] In one possible implementation, the BeiDou-L transmission channel includes: a BeiDou-L power amplifier circuit; the output of the BeiDou-L power amplifier circuit is used to transmit BeiDou-L signals, and the input is connected to a BeiDou triode.

[0013] In a second aspect, embodiments of the present invention provide an antenna, including the anti-interference integrated phased array microwave component as described in the first aspect or any possible implementation of the first aspect.

[0014] The beneficial effects of the embodiments of the present invention compared with the prior art are as follows: The anti-interference integrated phased array microwave component of this invention, through the integrated layout of the Tiantong transmitting unit, Tiantong receiving unit, Beidou transmitting unit, and Beidou receiving unit on the same circuit board, effectively reduces the overall space occupied by the component compared to the traditional solution of designing separate circuit boards and separate packaging structures for the Tiantong and Beidou systems. This achieves miniaturization and weight reduction of the component. Furthermore, to address the mutual interference and blocking issues between the transmitting and receiving units, the component specifically configures the transmitting channel devices of the Tiantong and Beidou transmitting units to respectively suppress the frequency bands of the Tiantong and Beidou receiving signals, effectively blocking interference. The signal from the transmitting unit intrudes into the corresponding operating frequency band of the receiving unit, preventing the receiving unit from being affected by interference from the transmitted signal and thus achieving anti-interference between the transmitting unit and the receiving unit. In addition, the receiving channel devices of the Tiantong receiving unit and the Beidou receiving unit are also configured to form preset suppression for the Tiantong transmission signal frequency band and the Beidou transmission signal frequency band, respectively. This can effectively suppress the impact of the high power of the transmitted signal on the receiving channel, preventing the receiving unit from being blocked, experiencing performance degradation, or even being damaged due to excessive transmitted signals. This achieves anti-blocking between the receiving unit and the transmitting unit, ultimately giving the components excellent anti-interference and anti-blocking capabilities, ensuring stable and reliable communication and navigation functions. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of a conventional single-channel receiving channel provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of a conventional single-channel transmission channel provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of an anti-interference integrated phased array microwave component for communication and conduction provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the Tiantong transmitting unit provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of the Tiantong receiving unit provided in an embodiment of the present invention; Figure 6 This is a schematic diagram of the BeiDou-S receiving channel provided in an embodiment of the present invention; Figure 7 This is a schematic diagram of the BeiDou B2b receiving channel provided in an embodiment of the present invention; Figure 8 This is a schematic diagram of a BeiDou launch unit provided in an embodiment of the present invention; Figure 9 This is a schematic diagram of the Tiantong transmission channel device provided in an embodiment of the present invention; Figure 10 This is a schematic diagram of the Tiantong receiving channel device provided in an embodiment of the present invention; Figure 11 This is a schematic diagram of the BeiDou-S receiving channel device provided in an embodiment of the present invention; Figure 12 This is a schematic diagram of the BeiDou B2b receiving channel device provided in an embodiment of the present invention; Figure 13 This is a schematic diagram of the BeiDou-L transmitting channel device provided in an embodiment of the present invention; Figure 14 This is a schematic diagram of a power supply unit provided in an embodiment of the present invention. Detailed Implementation

[0017] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of the invention. However, those skilled in the art will understand that the invention can be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods have been omitted so as not to obscure the description of the invention with unnecessary detail.

[0018] To illustrate the technical solution described in this invention, specific embodiments are described below.

[0019] In traditional phased array microwave components, the Tiantong satellite communication system and the Beidou satellite navigation system are not designed as an integrated system, but are designed as separate microwave components. Furthermore, the microwave components have several independent receiving channels with their own down-conversion mixer circuits, and the transmitting channels use discrete phase shifters, digitally controlled attenuators, and amplifiers, resulting in large component size and heavy weight.

[0020] Traditional single-channel receiver, such as Figure 1 As shown: First, the multiple RF input signals (RFin) are down-converted to intermediate frequency (IFout), and then the intermediate frequency input signals (IFin) are up-converted to RF output (RFout). A unified local oscillator distribution network provides a synchronized local oscillator signal for all mixer circuits.

[0021] Traditional single-channel transmission, such as Figure 2 As shown: the RF input first passes through filtering and pre-amplification to ensure the quality of the input signal; then, through phase shifting and attenuation, the high-precision amplitude and phase control required by the phased array is achieved to complete beamforming; finally, through multi-stage amplification and final stage power amplifier, a high-power RF signal is output.

[0022] This invention provides an anti-interference integrated phased array microwave component that adopts an integrated circuit board design, integrating complex RF and control traces onto the printed circuit board. At the same time, it simplifies the receiving channel circuit based on a multi-channel anti-interference RF chip and simplifies the transmitting channel circuit based on a phase-shifting attenuation multi-functional chip, thereby reducing the component's size and weight.

[0023] In this embodiment of the invention, the anti-interference integrated phased array microwave component includes: a Tiantong transmitting unit, a Tiantong receiving unit, a Beidou transmitting unit, and a Beidou receiving unit integrated on a circuit board; the transmitting channel devices of the Tiantong transmitting unit and the Beidou transmitting unit are configured to respectively suppress the frequency bands of the Tiantong receiving signal and the Beidou receiving signal, so as to achieve anti-interference of the transmitting unit against the Tiantong receiving unit and the Beidou receiving unit; the receiving channel devices of the Tiantong receiving unit and the Beidou receiving unit are configured to respectively suppress the frequency bands of the Tiantong transmitting signal and the Beidou transmitting signal, so as to achieve anti-blocking of the receiving unit against the Beidou transmitting unit and the Tiantong transmitting unit. Specifically, the transmitting channel devices of the Tiantong transmitting unit and the Beidou transmitting unit are configured to make the power spectral density of the Tiantong transmitting signal and the Beidou transmitting signal in the Tiantong receiving signal frequency band and the Beidou receiving signal frequency band less than a preset power spectral density threshold, so as to achieve anti-interference. The receiving channel devices of the Tiantong receiving unit and the Beidou receiving unit are configured to form a preset attenuation for the Tiantong transmission signal frequency band and the Beidou transmission signal frequency band, so that the power of the interference signal coupled to the receiving channel is lower than the preset blocking threshold, thereby achieving anti-blocking.

[0024] Figures 3 to 8This is a schematic diagram of an anti-interference integrated phased array microwave component for an embodiment of the present invention (TT in the figure represents Tiantong and BD represents Beidou).

[0025] like Figure 3 As shown, the Tiantong transmitting unit of this component employs five Tiantong transmitting channels, the Tiantong receiving unit employs five Tiantong receiving channels, the Beidou receiving unit includes four Beidou-S receiving channels and one Beidou-B2b receiving channel, and the Beidou transmitting unit has one Beidou-L transmitting channel. To prevent crosstalk between the Tiantong and Beidou-L transmitting signals due to poor isolation caused by shielding within the microwave component, both the Tiantong and Beidou-L transmitting channels are designed as separate structures embedded within the microwave component. The anti-interference integrated phased array microwave component of this embodiment is based on a multi-channel anti-interference RF chip. This multi-channel anti-interference RF chip integrates multiple down-conversion mixing circuits onto a single chip, requiring only one local oscillator signal and possessing phase shifting and attenuation functions, thus simplifying the receiving channel circuit. Simultaneously, the transmitting channel circuit is simplified based on a phase shifting and attenuation multi-functional chip, which integrates a digitally controlled phase shifter, a digitally controlled attenuator, and an amplifier onto a single chip, greatly simplifying the circuit.

[0026] like Figure 4 As shown, the Tiantong transmitting unit includes: multiple Tiantong transmitting channels; each Tiantong transmitting channel includes a phase-shifting attenuation multi-function chip and a Tiantong power amplifier circuit. The input terminal of the phase-shifting attenuation multi-function chip is connected to the power divider circuit, and the output terminal of the phase-shifting attenuation multi-function chip is connected to the Tiantong transceiver duplexer through the Tiantong power amplifier circuit.

[0027] like Figure 5 As shown, the Tiantong receiving unit includes: multiple Tiantong receiving channels; each Tiantong receiving channel includes a Tiantong low-noise amplifier circuit, the input of the Tiantong low-noise amplifier circuit is connected to the Tiantong transceiver duplexer, and the output of the multiple Tiantong low-noise amplifier circuits is connected to the intermediate frequency processing circuit through the same multi-channel anti-interference RF chip.

[0028] like Figures 6 to 8 As shown, the BeiDou receiving unit includes: multiple BeiDou-S receiving channels and a BeiDou-B2b receiving channel; the BeiDou transmitting unit includes: a BeiDou-L transmitting channel; the multiple BeiDou-S receiving channels are connected to the input terminal of the intermediate frequency processing circuit; the output terminal of the intermediate frequency processing circuit, the output terminal of the BeiDou-B2b receiving channel, and the input terminal of the BeiDou-L transmitting channel are connected to the BeiDou tripper.

[0029] Each BeiDou-S receiving channel includes: a BeiDou-S low-noise amplifier circuit; the input of the BeiDou-S low-noise amplifier circuit is used to receive BeiDou-S signals; the outputs of multiple BeiDou-S low-noise amplifier circuits are connected to the input of the intermediate frequency processing circuit through the same multi-channel anti-interference RF chip.

[0030] The BeiDou B2b receiving channel includes: a BeiDou B2b low-noise amplifier circuit; the input of the BeiDou B2b low-noise amplifier circuit is used to receive BeiDou B2b signals, and the output is connected to the BeiDou tripper.

[0031] The BeiDou-L transmission channel includes: a BeiDou-L power amplifier circuit; the output of the BeiDou-L power amplifier circuit is used to transmit BeiDou-L signals, and the input is connected to the BeiDou tripper.

[0032] Meanwhile, the most important aspect of the integrated and compatible design of the two systems is to consider the mutual interference between them. It is necessary to ensure that the circuits of the two systems operate stably without interference within a limited volume. The mutual influence of each channel in the system mainly considers: whether the spectral spread of the transmitting channel, coupled through the antenna and falling into the receiving band, affects the signal-to-noise ratio of the receiving channel; and the blocking characteristics of the receiving channel for strong out-of-band strong signals coupled from the transmitting channel through the antenna.

[0033] In this embodiment, the transmitting channel device and the receiving channel device of the phased array microwave assembly can be configured as follows: (1) Anti-interference design for BeiDou L-type transmitter to TianTong receiver (1.1) Anti-interference design for BeiDou L transmission spectrum extension to TianTong reception The BeiDou-L transmitting channel has a rated maximum output power of 40dBm and a signal bandwidth of 8.16MHz, corresponding to a carrier power spectral density of approximately -29dBm / Hz. This design requires the BeiDou-L transmitting channel to achieve adjacent-channel rejection greater than 110dBc in the TianTong receiving band. Simultaneously, a dielectric filter is configured in the transmitting link to achieve out-of-band rejection greater than 20dB in the TianTong receiving band. Furthermore, through antenna layout and polarization optimization, the spatial isolation between the BeiDou-L antenna and the TianTong antenna is no less than 20dB. Calculations show that after adjacent-channel rejection, dielectric filter filtering, and antenna spatial isolation, the spurious power spectral density of the BeiDou-L transmitted signal reaching the TianTong receiving channel is: 29dBm / Hz 110dB 20dB 20dB= 179dBm / Hz. This value is far lower than the thermal noise floor of 1Hz bandwidth at room temperature (-174dBm / Hz), indicating that the spectral spread spuriouss when the BeiDou-L transmitting channel is working are completely submerged by the inherent thermal noise of the TianTong receiver, and will not have any impact on the receiving performance of the TianTong receiving channel, thus achieving efficient coexistence of BeiDou-L transmitting and TianTong receiving.

[0034] (1.2) Anti-blocking design of Tiantong receiver for BeiDou L transmission signal The BeiDou-L transmitted signal will cause crosstalk to the TianTong receiving channel interface through antenna spatial coupling. Based on a 20dB spatial isolation between the BeiDou-L antenna and the TianTong antenna, the interference power coupled to the TianTong receiving channel interface is calculated to be 40dBm. 20dB = 20dBm. To ensure the normal operation of the Tiantong receiving channel during BeiDou-L transmission, this embodiment configures out-of-band suppression of more than 50dB against the BeiDou-L transmission frequency band at the duplexer receiver end of the Tiantong receiving channel, reducing the BeiDou-L transmission interference power input to the first-stage low-noise amplifier of the Tiantong receiving channel to 20dBm. 50dB= 30dBm. The first-stage low-noise amplifier in the Tiantong receiving channel uses a high-linearity device with an input 1dB gain compression point (IP1dB) greater than 0dBm, ensuring that the first-stage low-noise amplifier operates in the linear region without saturation or blocking. At the same time, two inter-stage filters with a suppression of more than 40dB for the BeiDou-L transmitting frequency band are cascaded in the receiving link to further attenuate residual interference. From a hardware perspective, this ensures that the Tiantong receiving link is unblocked throughout, achieving reliable compatibility between BeiDou-L transmission and Tiantong reception.

[0035] (2) Anti-interference design for BeiDou L transmission to BeiDou S and B2b reception (2.1) Anti-interference design for BeiDou S and B2b reception by BeiDou L transmission spectrum extension The BeiDou-L transmitting channel has a rated maximum output power of 40dBm and a signal bandwidth of 8.16MHz, corresponding to a carrier power spectral density of approximately -29dBm / Hz.

[0036] For the BeiDou B2b receiving band: This embodiment requires that the adjacent channel rejection of the BeiDou L transmitting channel in the BeiDou B2b receiving band be greater than 80dBc, the out-of-band rejection of the dielectric filter configured in the transmitting link be greater than 50dB in the BeiDou B2b receiving band, and the polarization isolation between the BeiDou L antenna and the BeiDou B2b antenna be no less than 20dB. The calculated spurious power spectral density of the BeiDou L transmitted signal in the BeiDou B2b receiving band is: 29dBm / Hz 80dB 50dB 20dB= 179dBm / Hz.

[0037] For the BeiDou-S receiving band: the adjacent channel rejection ratio (ACSR) of the BeiDou-L transmitting channel in the BeiDou-S receiving band must be greater than 110 dBc, the out-of-band rejection ratio (OSR) of the dielectric filter in the BeiDou-S receiving band must be greater than 20 dB, and the polarization isolation between the BeiDou-L antenna and the BeiDou-S antenna must be no less than 20 dB. The calculated spurious power spectral density of the BeiDou-L transmitted signal in the BeiDou-S receiving band is: 29dBm / Hz 110dB 20dB 20dB= 179dBm / Hz. The spurious power spectral density of the two frequency bands mentioned above is far lower than the thermal noise floor of -174dBm / Hz, indicating that the spectrum spread when the BeiDou L transmitting channel is working will not interfere with the BeiDou S and B2b receiving channels, thus ensuring the reliability of BeiDou multi-band reception.

[0038] (2.2) Anti-blocking design for BeiDou S and B2b receivers to transmit BeiDou L signals The BeiDou-L transmitted signal will cause crosstalk to the BeiDou-S and B2b receiving channel interfaces through antenna spatial coupling. Based on a 20dB spatial isolation between the BeiDou-L antenna and the BeiDou-S and B2b antennas, the interference power coupled to the receiving channel interface is calculated to be 40dBm. 20dB = 20dBm.

[0039] For the BeiDou-S receiving channel: The front-end of the BeiDou-S receiving channel is equipped with a pre-selection filter that suppresses the BeiDou-L transmitting frequency band by more than 50dB, reducing the BeiDou-L transmit interference power input to the first-stage low-noise amplifier to 20dBm. 50dB= 30dBm. The first-stage low-noise amplifier of the BeiDou-S receiving channel uses a high-linearity device with an input 1dB gain compression point greater than 0dBm to avoid saturation and blockage of the first-stage low-noise amplifier; at the same time, two inter-stage filters with a suppression of more than 40dB for the BeiDou-L transmitting band are cascaded to further attenuate interference and ensure that the BeiDou-S receiving link is unblocked throughout.

[0040] For the BeiDou B2b receiving channel: The front-end of the BeiDou B2b receiving channel is equipped with a pre-selection filter that suppresses the BeiDou L transmission band by more than 45dB, reducing the BeiDou L transmission interference power input to the first-stage low-noise amplifier to 20dBm. 45dB= The first-stage low-noise amplifier of the 25dBm BeiDou B2b receiving channel also uses a high-linearity device with an input 1dB gain compression point greater than 0dBm to avoid saturation and blockage of the first-stage low-noise amplifier; and two inter-stage filters with a suppression of more than 40dB for the BeiDou L transmitting frequency band are cascaded to ensure that the BeiDou B2b receiving link is unblocked throughout, and to achieve system-level compatibility between BeiDou L transmission and BeiDou S and B2b reception.

[0041] (3) Anti-interference design for Tiantong transmission to Beidou S and B2b reception (3.1) Anti-interference design for Tiantong transmission spectrum extension to Beidou S and B2b reception The maximum actual output power of the Tiantong transmission channel is 5W (corresponding to 37dBm), the signal bandwidth is 512kHz, and the corresponding carrier power spectral density is approximately -20dBm / Hz.

[0042] For the BeiDou B2b receiving band: This embodiment requires that the adjacent channel rejection of the Tiantong transmission channel in the BeiDou B2b receiving band be greater than 100dBc, the out-of-band rejection of the duplexer configured in the transmission link be greater than 40dB in the BeiDou B2b receiving band, and the polarization isolation between the Tiantong antenna and the BeiDou B2b antenna be no less than 30dB. The calculated spurious power spectral density of the Tiantong transmission signal in the BeiDou B2b receiving band is: 20dBm / Hz 100dB 40dB 30dB= 190dBm / Hz.

[0043] For the BeiDou-S receiving band: This embodiment requires that the adjacent channel rejection of the Tiantong transmitting channel in the BeiDou-S receiving band be greater than 100dBc, the out-of-band rejection of the duplexer in the BeiDou-S receiving band be greater than 45dB, and the polarization isolation between the Tiantong antenna and the BeiDou-S antenna be no less than 15dB. The calculated spurious power spectral density of the Tiantong transmitting signal in the BeiDou-S receiving band is: 20dBm / Hz 100dB 45dB 15dB= 180dBm / Hz. The spurious power spectral density of the two frequency bands mentioned above is much lower than the thermal noise floor of -174dBm / Hz, indicating that the spectrum spread when the Tiantong transmission channel is working will not interfere with the Beidou S and B2b receiving channels, thus achieving electromagnetic compatibility between Tiantong and the Beidou multi-system.

[0044] (3.2) Anti-blocking design for BeiDou S and B2b receivers to transmit signals to Tiantong The Tiantong transmission signal will be crosstalked to the Beidou S and B2b receiving channel interfaces through antenna spatial coupling.

[0045] For the BeiDou-S receiving channel: Based on a spatial isolation of 15dB between the Tiantong antenna and the BeiDou-S antenna, the interference power coupled to the BeiDou-S receiving channel interface is calculated to be 37dBm. 15dB = 22dBm. The BeiDou-S receiving channel front-end is configured with a pre-selection filter that suppresses the TianTong transmitting frequency band by more than 40dB, reducing the TianTong transmit interference power input to the first-stage low-noise amplifier to 22dBm. 40dB= 18dBm. The first-stage low-noise amplifier of the BeiDou-S receiving channel uses a high-linearity device with an input 1dB gain compression point greater than 0dBm to avoid saturation and blockage of the first-stage low-noise amplifier; at the same time, two inter-stage filters with a suppression of greater than 30dB for the Tiantong radio frequency band are cascaded to further attenuate interference and ensure that the BeiDou-S receiving link is unblocked throughout.

[0046] For the BeiDou B2b receiving channel: Based on a spatial isolation of 30dB between the Tiantong antenna and the BeiDou B2b antenna, the interference power coupled to the BeiDou B2b receiving channel interface is calculated to be 37dBm. 30dB = 7dBm. The BeiDou B2b receiving channel front-end is configured with a pre-selection filter that suppresses the TianTong transmitting frequency band by more than 20dB, reducing the TianTong transmit interference power input to the first-stage low-noise amplifier to 7dBm. 20dB= 13dBm. The first-stage low-noise amplifier of the Beidou B2b receiving channel uses a high-linearity device with an input 1dB gain compression point greater than 0dBm to avoid saturation and blockage of the first-stage low-noise amplifier; and two inter-stage filters with a suppression of more than 30dB for the Tiantong transmitting radio frequency band are cascaded to ensure that the Beidou B2b receiving link is unblocked throughout, and to achieve reliable coexistence of Tiantong transmission and Beidou S and B2b reception.

[0047] (4) Anti-interference design for Tiantong transmitter to Tiantong receiver (4.1) Anti-interference design for Tiantong receiver based on Tiantong transmit spectrum spread The maximum actual output power of the Tiantong transmitting channel is 5W (corresponding to 37dBm), with a signal bandwidth of 512kHz, corresponding to a carrier power spectral density of approximately -20dBm / Hz. This embodiment requires that the adjacent channel rejection of the Tiantong transmitting channel in the Tiantong receiving band be greater than 100dBc, and that the duplexer configured in the transmitting link provide out-of-band rejection of greater than 55dB in the Tiantong receiving band. Calculations show that the spurious power spectral density of the Tiantong transmitted signal in the Tiantong receiving band, after adjacent channel rejection and duplexer filtering, is: 20dBm / Hz 100dB 55dB= 175dBm / Hz. This value is lower than the thermal noise floor of -174dBm / Hz, indicating that the spectrum spread of the Tiantong transmitting channel will not interfere with the Tiantong receiving channel, ensuring electromagnetic compatibility within the same frequency band of Tiantong transmission and reception.

[0048] (4.2) Anti-blocking design of Tiantong receiver against Tiantong transmission signal The Tiantong transmitting and receiving channels share an antenna interface, and the transmitted signal will crosstalk to the Tiantong receiving channel through a duplexer. In this embodiment, a duplexer with a suppression of the Tiantong transmitting frequency band greater than 55dB is configured on the input side of the Tiantong receiving channel, resulting in a Tiantong transmit interference power of 37dBm at the input of the first-stage low-noise amplifier of the Tiantong receiving channel. 55dB= 18dBm. The first-stage low-noise amplifier of the Tiantong receiving channel uses a high-linearity device with an input 1dB gain compression point greater than 0dBm to avoid saturation and blockage of the first-stage low-noise amplifier; at the same time, two inter-stage filters with a suppression of more than 30dB for the Tiantong transmitting frequency band are cascaded in the receiving link to further attenuate residual interference, ensuring that the Tiantong receiving link is unblocked throughout and realizing reliable coexistence of the Tiantong transceiver channels.

[0049] The anti-interference integrated phased array microwave component of this invention, through the integrated layout of the Tiantong transmitting unit, Tiantong receiving unit, Beidou transmitting unit, and Beidou receiving unit on the same circuit board, effectively reduces the overall space occupied by the component compared to the traditional solution of designing separate circuit boards and separate packaging structures for the Tiantong and Beidou systems. This achieves miniaturization and weight reduction of the component. Furthermore, to address the mutual interference and blocking issues between the transmitting and receiving units, the component specifically configures the transmitting channel devices of the Tiantong and Beidou transmitting units to respectively suppress the frequency bands of the Tiantong and Beidou receiving signals, effectively blocking interference. The signal from the transmitting unit intrudes into the corresponding operating frequency band of the receiving unit, preventing the receiving unit from being affected by interference from the transmitted signal and thus achieving anti-interference between the transmitting unit and the receiving unit. In addition, the receiving channel devices of the Tiantong receiving unit and the Beidou receiving unit are also configured to form preset suppression for the Tiantong transmission signal frequency band and the Beidou transmission signal frequency band, respectively. This can effectively suppress the impact of the high power of the transmitted signal on the receiving channel, preventing the receiving unit from being blocked, experiencing performance degradation, or even being damaged due to excessive transmitted signals. This achieves anti-blocking between the receiving unit and the transmitting unit, ultimately giving the components excellent anti-interference and anti-blocking capabilities, ensuring stable and reliable communication and navigation functions.

[0050] This invention also provides an antenna, including an anti-interference integrated phased array microwave component as described in any of the above embodiments.

[0051] In this embodiment, the anti-interference integrated phased array microwave component consists of eight units: power supply unit, control unit, clock unit, Tiantong transmitting unit, Tiantong receiving unit, Beidou-S receiving unit, Beidou-B2b receiving unit, and Beidou-L transmitting unit.

[0052] The functions of each unit are described below: Control unit: Receives external commands, controls the gain and phase of each unit, and reports the operating status information of the microwave components.

[0053] Clock Unit: Provides the externally input clock signal to the local oscillator circuits of both the Tiantong and Beidou-S receiver units to generate local oscillators. It also features an internal clock backup function; when there is no external clock input, the internal clock is activated to ensure the microwave components continue to operate normally.

[0054] The Tiantong transmitting unit amplifies and filters the Tiantong transmitted signal, and also features phase shifting and gain control functions, with a maximum power output of 5W. For specific link details, please refer to [link / reference needed]. Figure 9 .

[0055] The Tiantong receiving unit filters and amplifies the received Tiantong signal, then down-converts it to an intermediate frequency (IF) output for the digital processing module. Conversely, it up-converts the IF signal from the digital processing module back to the Tiantong receiving signal, amplifies and filters it, and then outputs it. It also features gain control. For detailed link specifications, please refer to [link to documentation]. Figure 10 .

[0056] The BeiDou-S receiving unit filters and amplifies the received BeiDou-S signal, down-converts it to an intermediate frequency (IF) signal, and outputs it to the digital processing module. It then up-converts the IF signal output from the digital processing module back to the BeiDou-S signal, filters and amplifies it, and outputs it. It also features gain control. For detailed link specifications, please refer to [link / reference needed]. Figure 11 .

[0057] BeiDou B2b receiver unit: Filters and amplifies the received BeiDou B2b signal before outputting it. For specific link details, please refer to [link / reference needed]. Figure 12 .

[0058] BeiDou-L transmitting unit: amplifies and filters the BeiDou-L signal before outputting it, with a power output of 10W. For specific link details, please refer to [link / reference needed]. Figure 13 .

[0059] In the Tiantong section, the Tiantong receiving signal input port of the Tiantong receiving unit and the Tiantong transmitting signal output port of the Tiantong transmitting unit share the same port.

[0060] For the BeiDou component, the BeiDou L signal input port, BeiDou B2b signal output port, and BeiDou S signal output port are connected via a single cable, sharing one port.

[0061] Power supply unit: Converts external power supply while simultaneously supplying power to all other units. See the attached diagram for specific details. Figure 14 .

[0062] The remaining input / output ports are independent.

[0063] In the above embodiments, the descriptions of each embodiment have their own emphasis. Parts not detailed or described in a particular embodiment can be referred to in the relevant descriptions of other embodiments. Unless otherwise specified or in conflict with logic, the terminology and / or descriptions between different embodiments are consistent and can be referenced interchangeably. Technical features in different embodiments can be combined to form new embodiments based on their inherent logical relationships.

[0064] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included within the protection scope of the present invention.

Claims

1. An anti-interference integrated phased array microwave component for communication and conduction, characterized in that, include: The Tiantong transmitting unit, Tiantong receiving unit, Beidou transmitting unit, and Beidou receiving unit are integrated on the circuit board. The Tiantong transmitting unit includes: multiple Tiantong transmitting channels; each of the Tiantong transmitting channels includes a phase-shifting attenuation multi-functional chip and a Tiantong power amplifier circuit, the input terminal of the phase-shifting attenuation multi-functional chip is connected to the power divider circuit, and the output terminal of the phase-shifting attenuation multi-functional chip is connected to the Tiantong transceiver duplexer through the Tiantong power amplifier circuit; The Tiantong receiving unit includes: multiple Tiantong receiving channels; each of the Tiantong receiving channels includes a Tiantong low-noise amplifier circuit, the input of the Tiantong low-noise amplifier circuit is connected to a Tiantong transceiver duplexer, and the output of the multiple Tiantong low-noise amplifier circuits is connected to the intermediate frequency processing circuit of the Tiantong receiving unit through the same multi-channel anti-interference radio frequency chip. The BeiDou receiving unit includes: multiple BeiDou S receiving channels and a BeiDou B2b receiving channel; the BeiDou transmitting unit includes: a BeiDou L transmitting channel; the multiple BeiDou S receiving channels are connected to the input terminal of the intermediate frequency processing circuit of the BeiDou receiving unit; the output terminal of the intermediate frequency processing circuit of the BeiDou receiving unit, the output terminal of the BeiDou B2b receiving channel, and the input terminal of the BeiDou L transmitting channel are connected to the BeiDou tripling device; The transmission channel devices of the Tiantong transmission unit and the Beidou transmission unit are configured to make the power spectral density of the Tiantong transmission signal and the Beidou transmission signal in the Tiantong receiving signal frequency band and the Beidou receiving signal frequency band less than a preset power spectral density threshold, so as to achieve anti-interference. The receiving channel devices of the Tiantong receiving unit and the Beidou receiving unit are configured to form a preset attenuation for the Tiantong transmission signal frequency band and the Beidou transmission signal frequency band, so that the power of the interference signal coupled to the receiving channel is lower than a preset blocking threshold, thereby achieving anti-blocking.

2. The anti-interference integrated phased array microwave component for communication and conduction as described in claim 1, characterized in that, Each of the aforementioned BeiDou-S receiving channels includes: a BeiDou-S low-noise amplifier circuit; The input terminal of the Beidou-S low-noise amplifier circuit is used to receive Beidou-S signals. The output of the multi-channel Beidou-S low-noise amplifier circuit is connected to the input of the intermediate frequency processing circuit through the same multi-channel anti-interference RF chip.

3. The anti-interference integrated phased array microwave component for communication and conduction as described in claim 1, characterized in that, The BeiDou B2b receiving channel includes a BeiDou B2b low-noise amplifier circuit; the input of the BeiDou B2b low-noise amplifier circuit is used to receive BeiDou B2b signals, and the output is connected to a BeiDou tripod.

4. The anti-interference integrated phased array microwave component for communication and conduction as described in claim 1, characterized in that, The BeiDou-L transmission channel includes: a BeiDou-L power amplifier circuit; the output of the BeiDou-L power amplifier circuit is used to transmit BeiDou-L signals, and the input is connected to a BeiDou triode.

5. An antenna, characterized in that, Includes the anti-interference integrated phased array microwave component as described in any one of claims 1 to 4.

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