C wave band receiving module
By using 8-channel silicon-based amplitude chip segmentation and synthesis signals in the C-band receiving module, the problems of large number of chips, high cost and complex design in the existing technology are solved, and higher integration and reliability are achieved. Reduces cost and design time.
Patent Information
- Application Number
- CN202421161435.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-27
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-05-27
AI Technical Summary
In the existing C-band receiving module, the multi-beam scheme uses gallium arsenide single-channel amplitude channel chip or multi-channel silicon-based amplitude channel chip, resulting in large numbers, high costs, complex design and inconvenient cost for assembly, and silicon-based chips. The inconsistency requires long calibration.
Using an 8-channel silicon-based amplitude-phase chip, the 16-channel receiving channel signals are divided into 8 beams. The beam feeding network unit and amplitude-phase branch are used to realize the synthesis of 128 signals, which reduces the number of chips and product volume and improves the integration level. and reliability.
It effectively reduces product costs, reduces product size, improves integration and reliability, reduces design time and calibration time, and reduces costs.
Smart Images
Figure CN222301809U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of microwave communications, and in particular relates to a C-band receiving module. Background Art
[0002] The amplitude and phase channels of the multi-beam solution in the C band are mostly assembled using gallium arsenide single-channel amplitude channel chips. In the end, a large number of gallium arsenide chips are used, which is costly and inconvenient to assemble.
[0003] The few multi-channel silicon-based amplitude and phase channel chips that are used also face the problem of complex beam synthesis networks in the subsequent circuits. The synthesis network is implemented using integrated boards, which are costly and time-consuming to design. At the same time, if the boards cause inconsistencies, a lot of time will be sacrificed for calibration.
[0004] like Figure 3 As shown in the figure, it is the internal functional block diagram of the existing product. The product is equipped with 16 receiving channels. Each receiving channel forms 8 amplitude and phase channels based on two 4-channel silicon-based chips. Then the subsequent beam synthesis network realizes the synthesis of each amplitude and phase channel, that is, the beam synthesis network realizes 128 inputs and 8 outputs.
[0005] The above-mentioned existing products use traditional 4-channel silicon-based chips, which have the defects of having many internal devices, complex circuit structure and network synthesis, and are synthesized using integrated boards, which are estimated to have at least 20 layers of integrated boards. The product is large in size, high in cost, and low in fault tolerance. Summary of the invention
[0006] In view of the deficiencies in the above-mentioned prior art, this technical solution proposes a C-band receiving module that adopts a multi-beam chip to reduce the number of chips inside the product, and the cost decreases exponentially, effectively reducing product cost and competitiveness.
[0007] The above objectives are achieved specifically through the following technical solutions:
[0008] A C-band receiving module comprises a beam feeding network unit, 16 receiving channels respectively connected to the beam feeding network unit in communication, and 8 output channels respectively connected to the beam feeding network unit in communication; the receiving channel comprises an input connector, a limiter, an input low noise amplifier LNA1, an attenuator and an 8-channel amplitude and phase chip which are connected in sequence in communication; the output channel comprises an output low noise amplifier LNA2 and an output connector which are connected in sequence in communication.
[0009] Preferably, the 8-channel amplitude-phase chip comprises a 1-to-8 signal circuit and 8 amplitude-phase branches, and the 8 amplitude-phase branches are respectively connected to 8 output ends of the 1-to-8 signal circuit.
[0010] Preferably, the signal 1-to-8 circuit includes a 2-way power divider and two 4-way power dividers, the input port of the 2-way power divider is connected to the attenuator, and the two output ports of the 2-way power divider are respectively connected to the two 4-way power dividers.
[0011] Preferably, the amplitude-phase branch comprises a digitally controlled attenuator, a digitally controlled phase shifter and a single-pole single switch which are communicatively connected in sequence.
[0012] Preferably, the 8-channel amplitude and phase chip is also provided with a signal input pad for connecting an external control signal.
[0013] Preferably, the 8-channel amplitude and phase chip is also provided with a power supply module for connecting to an external power supply.
[0014] Compared with the prior art, this technical solution has the following advantages:
[0015] In this technical solution, an 8-channel amplitude-phase chip is used. Compared with a 4-channel silicon-based chip, the 8-channel silicon-based chip has doubled the amplitude-phase channels, but the volume has only increased by 34.2%. As a result, the product size can be reduced by 30%, greatly reducing the number of amplitude-phase chips, improving product integration and reliability, and saving product costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a principle block diagram of a C-band receiving module of this technical solution;
[0017] Figure 2 This is the principle block diagram of the 8-channel amplitude and phase chip of this technical solution;
[0018] Figure 3 It is the principle block diagram of the existing C-band receiving module. DETAILED DESCRIPTION
[0019] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution of the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings of the embodiments of the utility model. It should not be understood that the utility model is limited to the following examples. Without departing from the concept of the utility model, the deformation and improvement of the utility model in this field should be included in the protection scope of the claims of the utility model.
[0020] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure should be understood by people with ordinary skills in the field to which the present disclosure belongs. The words "or", "comprising" and the like used in the present disclosure mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects.
[0021] Example 1
[0022] This embodiment discloses a C-band receiving module as a basic implementation scheme of this technical solution. Figure 1 As shown, it includes a beam feeding network unit, 16 receiving channels respectively connected to the beam feeding network unit in communication, and 8 output channels respectively connected to the beam feeding network unit in communication; the receiving channel includes an input connector, a limiter, an input low noise amplifier LNA1, an attenuator and an 8-channel amplitude and phase chip which are connected in sequence in communication; the output channel includes an output low noise amplifier LNA2 and an output connector which are connected in sequence in communication.
[0023] Based on the above C-band receiving module structure, this technical solution receives C-band signals through 16 receiving channels. In each receiving channel, the C-band signal passes through the connector, limiter, input low noise amplifier LNA1 and attenuator in sequence, and is divided into eight beams by the 8-channel amplitude and phase chip. Based on the above principle, the 16 receiving channels input 128 beam signals to the beam feeding network unit together, and the beam feeding network unit synthesizes the 128 beam signals into 8 beam signals. The 8 beam signals pass through the low noise amplifier LNA2 and the output connector in the 8 output channels respectively, and are output to the back-end link for processing.
[0024] In this technical solution, the 8-channel amplitude and phase chip is a highly integrated C-band 8-channel phased array T / R multifunctional chip based on silicon-based technology. The chip controls the internal integrated registers through the parallel port communication module to achieve amplitude and phase configuration. The chip size is 4.64 mm × 5.24 mm and the operating temperature range is -55~+85℃.
[0025] The traditional 4-channel amplitude and phase chip size is 4mm × 4mm and the operating temperature range is -55~+85℃.
[0026] In this technical solution, an 8-channel amplitude and phase chip is used, which can reduce the number of amplitude and phase chips by half compared with the existing C-band receiving module products, greatly reducing the product size and improving the product integration. Among them, the 8-channel silicon-based chip has doubled the amplitude and phase channels compared with the 4-channel silicon-based chip, but the volume has only increased by 34.2%, so the product size can be reduced by 30%. The number of amplitude and phase chips is greatly reduced, and one 8-channel silicon-based chip can replace two 4-channel silicon-based chips, which improves the product integration and reliability and saves product costs.
[0027] Example 2
[0028] This embodiment discloses a C-band receiving module as a preferred implementation scheme of this technical solution. Figure 1As shown, it includes a beam feeding network unit, 16 receiving channels respectively connected to the beam feeding network unit in communication, and 8 output channels respectively connected to the beam feeding network unit in communication; the receiving channel includes an input connector, a limiter, an input low noise amplifier LNA1, an attenuator and an 8-channel amplitude and phase chip which are connected in sequence in communication; the output channel includes an output low noise amplifier LNA2 and an output connector which are connected in sequence in communication.
[0029] Furthermore, the 8-channel amplitude-phase chip includes a signal 1-to-8 circuit and 8 amplitude-phase branches, and the 8 amplitude-phase branches are respectively connected to 8 output terminals of the signal 1-to-8 circuit.
[0030] Furthermore, the signal 1-to-8 circuit includes a 2-way power divider and two 4-way power dividers, the input port of the 2-way power divider is connected to the attenuator, and the two output ports of the 2-way power divider are respectively connected to the two 4-way power dividers.
[0031] Furthermore, the amplitude-phase branch includes a digitally controlled attenuator, a digitally controlled phase shifter and a single-pole single switch which are communicatively connected in sequence.
[0032] This technical solution is based on an 8-channel silicon-based chip product, that is, each receiving channel includes an 8-channel silicon-based chip, and also includes a limiter, a low noise amplifier and an attenuator. The C-band signal entering each receiving channel is divided into 1 and 8, and 16*8=128 signals are obtained and enter the 16*8 amplitude and phase channels respectively; in the beam feeding network unit, the signals of each 16 amplitude and phase channels are synthesized into 1 beam, and a total of 8 beams are output. Among them, the beam feeding network unit adopts the Wilkinson power divider principle.
[0033] In the 8-channel silicon-based chip: RFC stands for the RF signal input terminal, which is used to receive the input signal from the outside world (attenuator) to the chip; RITO1 stands for the RF signal output terminal 1, which is used to divide the input signal from the outside world to the chip into eight output signals after being processed by the chip, one of which is output through the port RITO1. Correspondingly, RITO2, RITO3, RITO4, RITO5, RITO6, RITO7 and RITO8 are similar to RITO1; the function of the 2-way power divider is to divide the input signal equally into two output signals; the function of the 4-way power divider is to divide the input signal equally into four output signals; the function of the digitally controlled attenuator is to control the amplitude of the input signal by steps (0.5dB); the function of the digitally controlled phase shifter is to control the phase of the input signal by steps (5.625°); the function of the single-pole single switch is to open or close the signal path.
[0034] Example 3
[0035] This embodiment discloses a C-band receiving module as a preferred implementation scheme of this technical solution. Figure 1 As shown, it includes a beam feeding network unit, 16 receiving channels respectively connected to the beam feeding network unit in communication, and 8 output channels respectively connected to the beam feeding network unit in communication; the receiving channel includes an input connector, a limiter, an input low noise amplifier LNA1, an attenuator and an 8-channel amplitude and phase chip which are connected in sequence in communication; the output channel includes an output low noise amplifier LNA2 and an output connector which are connected in sequence in communication.
[0036] Furthermore, the 8-channel amplitude-phase chip includes a signal 1-to-8 circuit and 8 amplitude-phase branches, and the 8 amplitude-phase branches are respectively connected to 8 output terminals of the signal 1-to-8 circuit.
[0037] Furthermore, the signal 1-to-8 circuit includes a 2-way power divider and two 4-way power dividers, the input port of the 2-way power divider is connected to the attenuator, and the two output ports of the 2-way power divider are respectively connected to the two 4-way power dividers.
[0038] Furthermore, the amplitude-phase branch includes a digitally controlled attenuator, a digitally controlled phase shifter and a single-pole single switch which are communicatively connected in sequence.
[0039] Furthermore, the 8-channel amplitude and phase chip is also provided with a signal input pad for connecting an external control signal.
[0040] Furthermore, the 8-channel amplitude and phase chip is also provided with a power supply module for connecting to an external power supply.
[0041] Among them, the signal input pad serves as the external control signal input terminal; the power supply pad serves as the external power input terminal.
Claims
1. A C-band receiving module, characterized in that: It includes a beam feeding network unit, 16 receiving channels respectively connected to the beam feeding network unit in communication, and 8 output channels respectively connected to the beam feeding network unit in communication; the receiving channel includes an input connector, a limiter, an input low noise amplifier LNA1, an attenuator and an 8-channel amplitude and phase chip which are connected in sequence in communication; the output channel includes an output low noise amplifier LNA2 and an output connector which are connected in sequence in communication.
2. A C-band receiving module as claimed in claim 1, characterized in that: The 8-channel amplitude-phase chip comprises a 1-to-8 signal circuit and 8 amplitude-phase branches, and the 8 amplitude-phase branches are respectively connected to 8 output ends of the 1-to-8 signal circuit.
3. A C-band receiving module as claimed in claim 2, characterized in that: The signal 1-to-8 circuit includes a 2-way power divider and two 4-way power dividers, the input port of the 2-way power divider is connected to the attenuator, and the two output ports of the 2-way power divider are respectively connected to the two 4-way power dividers.
4. A C-band receiving module as claimed in claim 2, characterized in that: The amplitude-phase branch includes a digitally controlled attenuator, a digitally controlled phase shifter and a single-pole single switch which are sequentially connected in communication.
5. A C-band receiving module as claimed in claim 2, characterized in that: The 8-channel amplitude and phase chip is also provided with a signal input pad for connecting an external control signal.
6. A C-band receiving module as claimed in claim 2, characterized in that: The 8-channel amplitude and phase chip is also provided with a power supply module for connecting to an external power supply.