A phased array weather radar and its transceiver module

Abstract

The present application provides a phased array weather radar and a transceiver module thereof, wherein the transceiver module comprises: according to the signal transmission direction, the transmitting channel comprises: a plurality of isolation elements, a first single-stage power amplifier, a phase shifter, a multi-stage power amplifier and a first filter connected in sequence; the receiving channel comprises: a limiter, a low noise amplifier, a second filter, a second single-stage power amplifier, a first mixing element, a low-pass filter and a third single-stage power amplifier connected in sequence; through the above structure, RF input and intermediate frequency output are realized; the RF signal has the characteristics of particularly low phase noise and less spurious. The output intermediate frequency signal can be directly sampled by an ADC, so there is no need to set analog signal mixing elements, filtering units and other units that are bulky and expensive after the transceiver module, so that the transceiver module is miniaturized, and the phased array weather radar is smaller in size and lower in cost.

Description

Technical Field

[0001] The present invention relates to the field of electromagnetic wave technology, and in particular to a phased array weather radar and a transceiver module thereof. Background Art

[0002] The transceiver module refers to the part between the transmitting and receiving signals and the antenna in a wireless transceiver system, that is, one end of the transceiver module is connected to the antenna, and the other end is connected to the transmitting excitation signal and the signal processing unit. Phased array radars usually have dozens to hundreds or even more transmitting and receiving channels, while traditional radars only have one transmitting channel and one receiving channel.

[0003] In addition, traditional radars are composed of transmitters and receivers, and have high transmission power, so the size of the transceiver channel is relatively large. Phased array radars have too many transceiver channels. If they are still designed according to the concept of traditional radars, the size of the phased array radar will be extremely large. Although the performance is good, its huge cost and large size are unacceptable. Generally, the energy of a single transmission channel of a phased array is much lower than the transmission energy of a traditional radar, so a miniaturized and intensive transceiver channel, i.e., a transceiver module, can be designed.

[0004] The functions to be completed by the transceiver module of the phased array radar can be explained in detail as follows: providing the antenna with a radio frequency carrier signal with sufficient power for transmission (the antenna radiates energy into space), receiving the radio frequency echo signal from the antenna, amplifying it, and then providing it to the back-end signal processing unit for processing.

[0005] However, after the transceiver module receives the RF echo signal, it still needs to be processed by the back-end signal processing unit. Also, since the phased array radar has many transceiver channels, the back-end signal processing unit is large in size and expensive. Summary of the invention

[0006] In view of this, the present invention provides a phased array weather radar and a transceiver module thereof to solve the problem in the prior art that the phased array radar has more transceiver channels, resulting in a larger volume and higher cost of the back-end signal processing unit.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A phased array weather radar transceiver module, comprising:

[0009] Transmitting channels and receiving channels, and port connection elements;

[0010] The port connection element comprises at least a first end, a second end and a third end;

[0011] Wherein, according to the signal transmission direction, the transmission channel includes: a plurality of isolation elements, a first single-stage power amplifier, a phase shifter, a multi-stage power amplifier and a first filter connected in sequence;

[0012] The receiving channel includes: a limiter, a low noise amplifier, a second filter, a second single-stage power amplifier, a first mixing element, a low-pass filter and a third single-stage power amplifier connected in sequence;

[0013] The first filter is connected to a first end of the port connection element; the limiter is connected to a second end of the port connection element; and a third end of the port connection element is used to be connected to an antenna.

[0014] Preferably, the isolation element is a single-pole single-throw switch.

[0015] Preferably, the number of the single-pole single-throw switches is three.

[0016] Preferably, the following may be further included between the first frequency mixing element and the low-pass filter:

[0017] Along the signal transmission direction, the third filter, the fourth single-stage power amplifier and the second mixing element are connected in sequence.

[0018] Preferably, the first frequency mixing element and the second frequency mixing element are both mixers.

[0019] Preferably, the port connection element is a circulator.

[0020] Preferably, it further comprises a coupling detector, which is connected to the circulator and is used to detect whether the power of the transmission signal on the transmission path is abnormal.

[0021] The present invention also provides a phased array weather radar, comprising a plurality of transceiver modules arranged in an array, wherein the transceiver module is any one of the phased array weather radar transceiver modules described above.

[0022] Preferably, each of the transceiver modules is individually manufactured on an external structure.

[0023] Preferably, a plurality of the transceiver modules are manufactured on one external structure.

[0024] It can be known from the above technical solution that the transceiver module provided by the present invention includes: a transmitting channel and a receiving channel, and a port connecting element; the port connecting element includes at least a first end, a second end and a third end; wherein, according to the signal transmission direction, the transmitting channel includes: a plurality of isolation elements, a first single-stage power amplifier, a phase shifter, a multi-stage power amplifier and a first filter connected in sequence; the receiving channel includes: a limiter, a low-noise amplifier, a second filter, a second single-stage power amplifier, a first mixing element, a low-pass filter and a third single-stage power amplifier connected in sequence; the first filter is connected to the first end of the port connecting element; the limiter is connected to the second end of the port connecting element, and the third end of the port connecting element is used to connect to the antenna.

[0025] Through the above structure, the RF input RFin and the intermediate frequency output IFout are realized; the RF signal generated by the crystal oscillator and analog means is used as the input signal, and the RF signal has the characteristics of extremely low phase noise and less spurious. The output intermediate frequency signal can be directly sampled by the ADC, so there is no need to set analog signal mixing elements, filtering units and other units after the transceiver module. These units are bulky and expensive. That is, the transceiver module provided by the present invention has the characteristics of miniaturization, and the phased array weather radar provided has the advantages of small size and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0027] Figure 1 There are four theoretical implementation schemes for the transceiver module proposed in the present invention;

[0028] Figure 2 This is a schematic diagram of the transceiver module in the theoretical solution 1 of the transceiver module proposed by the present invention;

[0029] Figure 3 A schematic diagram of the structure of a phased array weather radar transceiver module provided in an embodiment of the present invention;

[0030] Figure 4 This is a schematic diagram of the structure of another phased array weather radar transceiver module provided in an embodiment of the present invention;

[0031] Figure 5 A schematic top view of the integrated structure of a 4-way transceiver module provided in an embodiment of the present invention;

[0032] Figure 6A schematic side view of the integrated structure of a 4-way transceiver module provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0033] As described in the background technology section, after the transceiver module of the phased array weather radar in the prior art receives the RF echo signal, it still needs a back-end signal processing unit to process it, which makes the back-end signal processing unit larger in size and more expensive.

[0034] The inventor has proposed that the transceiver module of the S-band phased array weather radar has the following advantages in terms of macroscopic theory: Figure 1 The four design schemes shown in the figure are as follows. However, the radar crystal oscillator (signal source) under the current technical bottleneck is an intermediate frequency signal, and the signal sampled by the ADC (Analog-to-digital converter) is also an intermediate frequency signal; and the signals transmitted and received by the antenna are both radio frequency signals (the antenna is bidirectional, which can transmit and receive signals) RFin / out. The current level of technology cannot achieve that the radio frequency signal with a frequency above 2.7GHz is directly converted into a digital signal by an ADC with a quantization capability of more than 16-bit!

[0035] As far as the existing technology is concerned, the source of the transmission signal is a digital signal, which is generally an intermediate frequency signal generated by direct digital frequency synthesis (DDS) or a digital-to-analog converter (DAC); in the receiving link, the analog-to-digital converter (ADC) also samples and processes the intermediate frequency signal. Therefore, it can be seen that it is more direct and convenient to use intermediate frequency signals for both transmission and reception. Therefore, the ideal transceiver module is the intermediate frequency input IFin and the intermediate frequency output IFout.

[0036] However, due to technical reasons, the transceiver module using intermediate frequency input IFin needs to go through intermediate frequency conversion, phase shifting, filtering and other processing. After processing, the quality of the RF signal transmitted to the antenna is not good, such as high phase noise, many frequency spurs, etc., which cannot meet the weather radar's requirements for high-performance transmission signals. Therefore, the RF signal is usually provided to the transceiver module as input RFin, and then amplified and phase shifted to the antenna, and the antenna radiates the signal into space.

[0037] However, weather radar has high requirements for the quality of transmitted RF signals: the targets measured by weather radar are clouds, rain, sky, wind, etc., while other radars measure moving targets such as airplanes in the sky. Therefore, the observation objects measured by weather radar are targets that other radars regard as background, which means that weather radar needs to extract useful signals from the background of other radars. Therefore, weather radar has higher requirements for the quality of transmitted signals. Therefore, although schemes 2 and 4 may be applicable to other radars, they are still not applicable to weather radars at present.

[0038] In the field of weather radar, after excluding options 2 and 4, with current technology, the transceiver modules of general phased array radars all use radio frequency signals for transmission, that is, the radio frequency input signal RFin (Radio Frequency input) is transmitted to the antenna, and the echo radio frequency signal received by the receiving antenna is amplified and output as the output signal RFout (Radio Frequency output) for the back-end to mix, down-convert, amplify and convert to digital signals through ADC (analog-to-digital converter).

[0039] That is, the prior art generally adopts solution 1, and the specific implementation function block diagram of solution 1 is as follows: Figure 2 , the RF signal is used as the input of the transceiver module, the input signal is first phase-shifted by the phase shifter, the amplitude of the input signal is adjusted by the attenuator, and then the transceiver switch is selected. Figure 2 The uplink in the receiver enters the power amplifier for amplification, and finally passes through the circulator to the antenna, which radiates into space. When receiving, the antenna sends the echo signal through the circulator into the receiver. Figure 2 In the middle and lower paths, the amplitude is limited for protection, and then it enters the low-noise amplifier for amplification, and then it is selected by the transceiver switch, and then passes through the attenuator and phase shifter to finally obtain the signal that needs to be processed, thus completing the reception of the transceiver module.

[0040] However, for radar systems, the receiving output of the transceiver module is not the end point. Only the signal that reaches the ADC can be processed is the signal form expected by the receiving path. Therefore, in solution one, the output received by the transceiver module needs analog signal mixing and filtering to reduce it to an intermediate frequency signal - the intermediate frequency signal is a signal that can be directly sampled by the ADC.

[0041] Then, based on Solution 1, the signal received by the transceiver module is processed and converted into an intermediate frequency signal that can be sampled by the ADC, which is Solution 3. In this way, a phased array weather radar with hundreds of transceiver channels does not need to adopt Solution 1, which can reduce the analog signal mixing components and filtering units after the transceiver module of Solution 1 - and these units are bulky and expensive.

[0042] Based on this, the present invention provides a phased array weather radar transceiver module, comprising:

[0043] Transmitting channels and receiving channels, and port connection elements;

[0044] The port connection element comprises at least a first end, a second end and a third end;

[0045] Wherein, according to the signal transmission direction, the transmission channel includes: a plurality of isolation elements, a first single-stage power amplifier, a phase shifter, a multi-stage power amplifier and a first filter connected in sequence;

[0046] The receiving channel includes: a limiter, a low noise amplifier, a second filter, a second single-stage power amplifier, a first mixing element, a low-pass filter and a third single-stage power amplifier connected in sequence;

[0047] The first filter is connected to a first end of the port connection element; the limiter is connected to a second end of the port connection element; and a third end of the port connection element is used to be connected to an antenna.

[0048] Due to the transceiver module provided by the present invention, the radio frequency input RFin and the intermediate frequency output IFout are realized; the radio frequency signal generated by the crystal oscillator and analog means is used as the input signal, and the radio frequency signal has the characteristics of extremely low phase noise and less spurious. The output intermediate frequency signal can be directly sampled by the ADC, so there is no need to set analog signal mixing elements, filtering units and other units after the transceiver module. These units are bulky and expensive. That is, the transceiver module provided by the present invention has the characteristics of miniaturization, and the phased array weather radar provided has the advantages of small size and low cost.

[0049] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0050] The present invention provides a phased array weather radar transceiver module, which operates in the S band. The S band frequency range described in the embodiment of the present invention is 2.0GHz to 4.0GHz, and the operating frequency of the phased array weather radar described in the present invention is 2.7GHz to 3.0GHz. It should be noted that a single channel of the phased array transceiver module provided in the embodiment of the present invention has only tens to more than one hundred watts, but the phased array has hundreds of transmitting channels and receiving channels. Therefore, the total power of the phased array weather radar is tens of kilowatts. The structure is explained below using a single phased array transceiver module as an example.

[0051] See also Figure 3 , Figure 3The present invention provides a schematic diagram of the structure of a phased array weather radar transceiver module. The transceiver module includes: a transmitting channel T and a receiving channel R, and a port connection element O; the port connection element O includes at least a first end, a second end and a third end; wherein, according to the signal transmission direction, the transmitting channel T includes: a plurality of isolation elements T1, a first single-stage power amplifier T2, a phase shifter T3, a multi-stage power amplifier T4 and a first filter T5 connected in sequence; the receiving channel R includes: a limiter R1, a low noise amplifier R2, a second filter R3, a second single-stage power amplifier R4, a first mixing element R5, a low-pass filter R6 and a third single-stage power amplifier R7 connected in sequence; the first filter T5 is connected to the first end of the port connection element O; the limiter R1 is connected to the second end of the port connection element O, and the third end of the port connection element O is used to connect to the antenna.

[0052] In this embodiment, the specific implementation method of the isolation element is not limited. Optionally, the isolation element can be a single-pole single-throw switch or an isolator. It should be noted that the isolation degree of a single-pole single-throw switch is usually above 40dB, while the isolation degree of the isolator is less than 20dB, and the single-pole single-throw switch will basically not cause the deterioration of other index parameters relative to the isolator, such as increasing the insertion loss and the standing wave ratio. Therefore, in this embodiment, the isolation element is optionally a single-pole single-throw switch. The specific number of single-pole single-throw switches is not limited in this embodiment, and can be set according to actual needs. Optionally, in this embodiment, in order to make the isolation degree reach more than 100dB, the number of single-pole single-throw switches can be 3.

[0053] When multiple single-pole single-throw switches are connected in series in the transmission path, they can isolate the transmission channel and the receiving channel of the transceiver module, as well as isolate multiple transceiver modules from each other when they are integrated into one structure, achieving an isolation of at least 80dB or even more than 100dB. The first single-stage power amplifier realizes single-stage amplification of the power signal; the multi-stage power amplifier amplifies the power signal in multiple stages, both of which play an amplification role; the phase shifter is used to shift the phase of the RF signal; the first filter is used to filter out frequencies other than the target frequency and reduce clutter.

[0054] The limiter of the receiving path is used to limit the power of the echo signal. When the power of the echo signal received by the transceiver module is large, the limiter protects the subsequent circuit. Since the echo signal received by the antenna is very weak, an amplifier with very low noise is required to amplify and extract the echo signal. If an ordinary amplifier is used, the noise and signal are amplified at the same time, and the weak echo signal cannot be extracted. The noise coefficient of the low-noise amplifier described in this embodiment is less than 0.6dB. The second filter and the third filter use bandpass filters to filter out frequency signals other than useful signals. The second single-stage power amplifier, the third single-stage power amplifier, and the fourth single-stage power amplifier are also used to amplify the lower signal amplitude to a usable amplitude.

[0055] It should be noted that the receiving channel in the above embodiment only includes a structure consisting of a mixing element and a filter, which implements a single down-conversion. In order to ensure that the intermediate frequency signal finally obtained can be sampled and processed by the ADC, the present embodiment may also include a two-stage mixing structure, thereby controlling the intermediate frequency signal to be below 400MHz, which is convenient for 16-bit ADC sampling. Figure 4 FIG. 1 is a schematic diagram of another phased array weather radar transceiver module structure provided by an embodiment of the present invention. Figure 3 The difference is that, in this embodiment, between the first frequency mixing element and the low-pass filter, there may further be included: a third filter R8, a fourth single-stage power amplifier R9 and a second frequency mixing element R10 which are sequentially connected along the signal transmission direction.

[0056] The specific structures of the first frequency mixing element and the second frequency mixing element are not limited in this embodiment. Optionally, in this embodiment, the first frequency mixing element and the second frequency mixing element are both implemented by a mixer. The functions of the first frequency mixing element and the second frequency mixing element are: multiplying the radio frequency signal with the local oscillator signal to obtain multiple frequency components, and then filtering out unnecessary frequency components through a filter to obtain the frequency signal required by the system. Since the intermediate frequency signal frequency is about 100MHz, which is much lower than the radio frequency signal frequency, a low-pass filter is used to filter out relatively high-frequency radio frequency signals and achieve better frequency characteristics.

[0057] The receiving path provided in the embodiment of the present invention adopts a method of secondary down-conversion and multiple filtering to finally obtain an intermediate frequency output signal.

[0058] Combine the following Figure 4The structure shown illustrates the working principle of the transceiver module provided in an embodiment of the present invention, wherein the input radio frequency signal RFin (2.7GHz~3.0GHz) passes through at least two single-pole single-throw switches, then passes through a single-stage power amplifier, is amplified, and then is phase-shifted by a phase shifter, then is amplified in multiple stages, then passes through a first filter, and finally passes through a circulator to output the radio frequency signal (2.7GHz~3.0GHz), which is finally radiated into space by an antenna (the transceiver module does not include an antenna).

[0059] The echo signal received by the antenna is a radio frequency signal (2.7GHz~3.0GHz), which first passes through a circulator, then passes through a limiter, a low-noise amplifier, a second filter, a second single-stage power amplifier, and then is mixed with the local oscillator LO1 (Local Oscillator). After filtering, a first down-conversion signal is obtained, which is then amplified and mixed with the local oscillator LO2 for a second time, and low-pass filtered to obtain a second down-conversion signal, which is the intermediate frequency signal IFout at this time, with a frequency range of 80MHz~120MHz, and finally output after amplification.

[0060] Weather radar operates at a certain frequency between 2.7GHz and 3.0GHz, and the receiving signal bandwidth is within 40MHz. That is, weather radar is a narrowband signal receiving system. Therefore, the filter bandwidth in the transceiver path does not need to be particularly wide, making it easy to filter out interference signals.

[0061] In addition, it should be noted that the transceiver module in the embodiment of the present invention may also include a coupled detector J, which couples and detects at the circulator to obtain a transmission power signal monitoring, that is, the coupled detector J is used to detect whether the power of the transmission signal is abnormal, that is, when the transmission path is damaged or the power drops due to performance degradation, this part can make an alarm monitoring. The transceiver module provided by the embodiment of the present invention has a transmission path input signal power of 0dBm and a minimum output signal power of 100W, which is a high-power transceiver module with a small size.

[0062] Description of the radio frequency signal and the mixing and frequency conversion to the intermediate frequency signal in the embodiment of the present invention:

[0063] For example, the RF signal 2.7GHz~3.0GHz is converted to the intermediate frequency, such as LO1: 3.51GHz~3.81GHz, LO2: 900MHz, then the intermediate frequency signal is 90MHz. The calculation method is as follows:

[0064] When an echo signal with a frequency of 2.7 GHz is received, the 2.7 GHz RF signal is mixed with the local oscillator signal LO1 with a frequency of 3.51 GHz of the first mixing element, and only 3.51 GHz-2.7 GHz=0.81 GHz=810 MHz is retained after filtering, and then mixed again, that is, the filtered signal 810 MHz is mixed with the local oscillator signal LO2 with a frequency of 900 MHz of the second mixing element, and only 900 MHz-810 MHz=90 MHz is retained after filtering, thus obtaining an intermediate frequency signal of 90 MHz.

[0065] Similarly, when an echo signal with a frequency of 3.0 GHz is received, the 3.0 GHz RF signal is mixed with the local oscillator signal LO1 of the first mixing element with a frequency of 3.81 GHz. After filtering, only 3.81 GHz-3.0 GHz=0.81 GHz=810 MHz is retained. Then, mixing is performed again, that is, the filtered signal 810 MHz is mixed with the 900 MHz of the local oscillator signal LO2 of the second mixing element. After filtering, only 900 MHz-810 MHz=90 MHz is retained to obtain an intermediate frequency 90 MHz signal.

[0066] The weather radar operates at a certain frequency between 2.7 and 3.0 GHz. After the radar frequency is determined, the LO1 frequency value is also determined. The corresponding frequency difference between LO1 and the RF signal (2.7 to 3.0 GHz) of the weather radar is 810 MHz.

[0067] The transceiver module provided in the embodiment of the present invention has the following characteristics:

[0068] 1) The transmitting path of the transceiver module uses multiple single-pole single-throw switches connected in series to increase the isolation. Usually, a single-pole single-throw switch can achieve an isolation of more than 40dB. In the embodiment of the present invention, multiple single-pole single-throw switches are used to achieve the addition of multiple cascaded isolations.

[0069] 2) The receiving path of the transceiver module uses two-stage mixing and multi-stage filters in series to convert the RF signal amplified by the low-noise amplifier into an intermediate frequency signal, and the multi-stage filter filters out the frequency components outside the signal bandwidth. When other components that can achieve the mixing function are used, the mixer in this solution can be replaced. The combination of mixing and filtering in the solution will generate many frequency components, and only filtering can select a part of the many frequency components. Therefore, it can be seen that the filter in the receiving path cannot be removed.

[0070] Due to the transceiver module provided by the present invention, the radio frequency input RFin and the intermediate frequency output IFout are realized; the radio frequency signal generated by the crystal oscillator and analog means is used as the input signal, and the radio frequency signal has the characteristics of extremely low phase noise and less spurious. The output intermediate frequency signal can be directly sampled by the ADC, so there is no need to set analog signal mixing elements, filtering units and other units after the transceiver module. These units are bulky and expensive. That is, the transceiver module provided by the present invention has the characteristics of miniaturization, and the phased array weather radar provided has the advantages of small size and low cost.

[0071] Based on the same inventive concept, another embodiment of the present invention further provides a phased array weather radar, comprising a plurality of transceiver modules arranged in an array, wherein the transceiver module is the phased array weather radar transceiver module described in the above embodiment.

[0072] In the embodiment of the present invention, the manufacturing shape of the transceiver module is not limited. Each transceiver module can be manufactured on a separate shape structure, or 2, 4 or more transceiver modules can be manufactured on a shape structure to integrate multiple transceiver modules. Figure 5 and Figure 6 FIG. 1 is a schematic diagram of the appearance structure of a 4-way transceiver module integrated with an embodiment of the present invention, wherein: Figure 5 A schematic top view of the integrated structure of a 4-way transceiver module provided in an embodiment of the present invention; Figure 6 A schematic side view of the integrated external structure of a 4-way transceiver module provided in an embodiment of the present invention. The dimensions of the external structure are 157mm×130mm×32mm. There are 4 RFin / out interfaces and 4 IFout interfaces in the external structure, representing 4 transceiver channels; 1 RFin, there is a power divider inside the component, and the equal power is divided into 1 and 4, thereby satisfying a four-way transceiver channel: 4 RFin, 4 IFout and 4 RFin / out.

[0073] By using the phased array weather radar transceiver module provided by the embodiment of the present invention, the phased array weather radar does not need various units for converting subsequent radio frequency signals into intermediate frequency signals, thereby reducing the size and cost of the phased array weather radar.

[0074] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0075] It should also be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprises", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, so that an article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such article or device. In the absence of further restrictions, the elements defined by the sentence "comprising a ..." do not exclude the existence of other identical elements in the article or device including the above elements.

[0076] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A phased array weather radar transceiver module, characterized in that: include: Transmitting channels and receiving channels, and port connection elements; The port connection element comprises at least a first end, a second end and a third end; Wherein, according to the signal transmission direction, the transmission channel includes: a plurality of isolation elements, a first single-stage power amplifier, a phase shifter, a multi-stage power amplifier and a first filter connected in sequence; The receiving channel includes: a limiter, a low noise amplifier, a second filter, a second single-stage power amplifier, a first mixing element, a low-pass filter and a third single-stage power amplifier connected in sequence; The first filter is connected to a first end of the port connection element; the limiter is connected to a second end of the port connection element, and a third end of the port connection element is used to connect to an antenna; Also included between the first frequency mixing element and the low-pass filter: a third filter, a fourth single-stage power amplifier and a second frequency mixing element connected in sequence along the signal transmission direction, the first frequency mixing element and the second frequency mixing element are both mixers; A coupled detector is connected to the circulator and is used to detect whether the power of the transmission signal on the transmission path is abnormal.

2. The phased array weather radar transceiver module according to claim 1, characterized in that: The isolation element is a single-pole single-throw switch.

3. The phased array weather radar transceiver module according to claim 2, characterized in that: The number of the single-pole single-throw switches is three.

4. The phased array weather radar transceiver module according to claim 1, characterized in that: The port connection element is a circulator.

5. A phased array weather radar, characterized in that: It comprises a plurality of transceiver modules arranged in an array, wherein the transceiver module is the phased array weather radar transceiver module according to any one of claims 1 to 4.

6. The phased array weather radar according to claim 5, characterized in that: Each of the transceiver modules is individually manufactured on an external structure.

7. The phased array weather radar according to claim 5, characterized in that: A plurality of the transceiver modules are manufactured on one outer structure.

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