Multi-channel receiving module for P-Ku wave band rapid detection

Abstract

The invention discloses a multi-channel receiving module for P-Ku wave band rapid detection, which comprises an amplitude limiting detection unit, a switch phase shift numerical control attenuation unit and a power amplifier switch unit which are connected in sequence, a control unit for controlling each unit, and a power supply unit for supplying power, the number of the amplitude limiting detection units is six, the amplitude limiting detection units are provided with six radio frequency signal input ports, each amplitude limiting detection unit comprises an amplitude limiter, a low noise amplifier, a temperature compensation device, an amplifier and a power divider which are connected in sequence, and the power divider is further connected with a detector and an AD. According to the scheme, the functions of selecting the maximum signal channel through high-speed detection and amplifying channel signals are achieved, and the advantages of being high in detection speed, high in high-power channel switching output speed, high in module circuit integration degree, small in size and the like are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of wireless communications, and in particular to a multi-channel receiving module for rapid detection in the P-Ku band. Background Art

[0002] A receiver module is a circuit module that receives external signals from input ports such as antennas and optical fibers. It controls the power, phase, and amplitude of weak signals received by the antenna, providing signal input for subsequent circuit processing. It is widely used in wireless communications, satellite communications, optical fiber communications, radar, and remote sensing. In these applications, the receiver module plays a critical role, determining the performance of the entire system.

[0003] A receiver module typically has many parameters, such as sensitivity, bandwidth, and noise figure. Sensitivity refers to how well the receiver module responds to input signal strength, while bandwidth determines the frequency range the receiver module can receive.

[0004] Existing receiving modules have low output power and slow detection speed. They cannot quickly detect and select the maximum signal channel, and are unable to quickly provide high-quality useful signals to the backend. Summary of the Invention

[0005] In order to solve the above technical problems, the present invention provides a multi-channel receiving module with fast detection in the P-Ku band, which realizes the function of high-speed detection and selection of the maximum signal channel of the multi-channel receiving module in the P-Ku band.

[0006] The present invention is achieved by adopting the following technical solutions: A multi-channel receiving module with fast detection in the P-Ku band comprises a limiting detection unit, a switch phase shift digitally controlled attenuation unit and a power amplifier switch unit connected in sequence, as well as a control unit for controlling each unit and a power supply unit for supplying power. The limiting detection units comprise six groups and are provided with six radio frequency signal input ports. Each group of limiting detection units comprises a limiter, a low-noise amplifier, a temperature compensation, an amplifier and a power divider connected in sequence, wherein the power divider is further connected to a detector and an AD.

[0007] Specifically, each group of the limiting detection units simultaneously receives external signals, limits the input signals, power-amplifies the small signals through two-stage amplification and temperature-compensated attenuation, and outputs two signals to the power divider. One signal is processed by the detector and outputs a DC signal to the AD for voltage acquisition, and the other signal is input to the post-stage unit link; the detector adopts a ns-level fast detector, and the AD adopts a high-speed AD; the ns-level fast detector is combined with the high-speed AD to ultimately achieve fast detection and comparison to select the channel with the largest signal.

[0008] Specifically, the switch phase-shifting digitally controlled attenuation unit includes a multi-channel switch, a digitally controlled phase shifter, a temperature-compensated attenuator, a low-noise amplifier, a digitally controlled attenuator, an equalizer, and multiple amplifiers. After the multi-channel switch is switched to the channel with the maximum signal, the phase and amplitude of the signal are controlled by the digitally controlled phase shifter and the digitally controlled attenuator.

[0009] Specifically, the power amplifier switch unit includes a driving amplifier, a power amplifier and a high-power switch. The high-power switch adopts a ns-level high-power switch to switch the signal to a required channel output.

[0010] Specifically, the control unit includes a programmable gate array (FPGA), voltage and current monitoring, and temperature monitoring; the programmable gate array (FPGA) controls the ns-level high-power switch and ns-level fast detector to perform fast detection and multi-channel switching in the P~Ku band; wherein, the control of the programmable gate array (FPGA) also includes: controlling the digitally controlled attenuator and digitally controlled phase shifter to ensure the accuracy of the output signal power and phase; realizing channel switching recording and feedback data, and controlling the enable function of the control switching power supply.

[0011] Specifically, the power supply unit includes a switching power supply DCDC chip and a low-dropout linear regulator LDO. The switching power supply DCDC chip converts the input voltage into the internally required voltages at each level, and then the low-dropout linear regulator LDO suppresses the ripple and power supply stray signals on the power supply to achieve voltage stabilization; Among them, the input voltage is 28V, and the internal voltage levels required include +5.5V, -5.5V, +2.5V, -2.5V, -40V and other voltages; the low-dropout linear regulator LDO voltage regulation includes 5V, -5V, -2V and so on.

[0012] The beneficial effects of the present invention are: it realizes the high-speed detection and selection of the maximum signal channel of the P-Ku band multi-channel receiving module; its main components include a limiter, a temperature-compensated attenuator, a low-noise amplifier, a digitally controlled attenuator, a digital phase shifter, a power amplifier, a detector, a power supply, and a control system, etc., and has the advantages of fast detection speed, fast switching output of high-power channels, high module circuit integration, and small size. The detector uses step-by-step approximation compression technology to achieve fast nanosecond-level detection and uses a super-GaN power amplifier to amplify the maximum received signal, realizing the high-speed detection, selecting the maximum signal channel, and amplifying the channel signal. At the same time, the present invention has the following main functions: (1) Remote power on and off function; (2) Module channel switching record and return function data; (3) Select the maximum signal channel through high-speed detection; (4) Module temperature monitoring and feedback function; (5) Small signal power amplification function; (6) Output power adjustable function; (7) Phase shift adjustment function. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0014] Figure 1 This is a functional block diagram of the multi-channel receiving module of the present invention; Figure 2 This is a principle block diagram of the amplitude limiting detection unit in an embodiment of the present invention; Figure 3 This is a principle block diagram of a switch phase-shift digitally controlled attenuation unit according to an embodiment of the present invention; Figure 4 This is a principle block diagram of a power amplifier switch unit in an embodiment of the present invention; Figure 5 This is a principle block diagram of a control unit in an embodiment of the present invention; Figure 6 This is a principle block diagram of a power supply unit in an embodiment of the present invention. DETAILED DESCRIPTION

[0015] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of 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. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0016] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0017] The following is combined with Figures 1 to 6 , some embodiments of the present invention are described in detail. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0018] The present invention proposes a multi-channel receiving module for fast detection in the P-Ku band. Figure 1As shown, it includes a limiting detection unit, a switch phase shift digitally controlled attenuation unit and a power amplifier switch unit connected in sequence, as well as a control unit for controlling each unit and a power supply unit for powering the units; the limiting detection unit includes six groups and is provided with six RF signal input ports, and each group of limiting detection units includes a limiter, a low noise amplifier, a temperature compensation, an amplifier and a power divider connected in sequence, wherein the power divider is also connected to a detector and AD.

[0019] The limiter detection unit includes: limiter, low noise amplifier, temperature compensated attenuator, power divider, detector and AD, etc. It can amplify the input small signal and monitor the power of the input signal of the channel.

[0020] The switch phase shift digital controlled attenuation unit includes: multi-channel switch, phase shifter, temperature compensated attenuator, low noise amplifier, digital controlled attenuator, equalizer, etc. It can control the power and phase of the maximum input signal.

[0021] The power amplifier switch unit includes: driver amplifier, power amplifier, high-power switch, etc. It can amplify low-power signals into high-power signals and control the switch to switch to the specified channel to output high-power signals according to demand.

[0022] The control unit includes: programmable gate array, voltage and current monitoring, temperature monitoring, etc. Real-time monitoring of the module's voltage, current, and temperature ensures the normal operation of the module.

[0023] The power supply unit includes a switching power supply and a linear voltage regulator. These two types of devices convert the input 28V voltage into the internally required voltage levels and suppress ripple and stray signals on the power supply.

[0024] In a specific embodiment, Figure 1 As shown, the module consists of six RF signal input ports, six RF signal output ports, a control interface and a power interface.

[0025] like Figure 2 As shown, the limiting detection unit consists of six main components: a limiter, a low-noise amplifier, and a detector. These six channel units simultaneously receive external signals, each limiting the input signal to prevent excessive input signals from damaging downstream components. A two-stage amplification and temperature-compensated attenuation process amplifies the small signal. Two output signals are sent to the power divider: one channel undergoes nanosecond-level detection and then outputs a DC signal for high-speed analog-to-analog (ADC) voltage acquisition, while the other channel is sent to downstream components.

[0026] like Figure 3 As shown in the figure, the switched phase-shifted digitally controlled attenuator unit primarily consists of a switch, a digitally controlled attenuator, and a phase shifter. After the multi-channel switch is switched to the channel with the highest signal, the signal is controlled by the digitally controlled phase shifter and digitally controlled attenuator. An equalizer and temperature-compensated attenuator are added to the link to ensure the stability of the output signal power.

[0027] like Figure 4 As shown in the figure, the power amplifier switch unit is composed of a driver amplifier, a power amplifier, and a high-power switch. The small signal is converted into a large signal by the driver amplifier and the power amplifier, and then switched to the required channel output by the nanosecond-level high-power switch.

[0028] like Figure 5 As shown, the control unit consists of a field-programmable gate array (FPGA), voltage and current monitoring, and temperature monitoring. Real-time monitoring of the module's voltage, current, and temperature ensures proper operation. The FPGA controls two nanosecond-level switches and nanosecond-level detection and comparison, enabling fast detection and multi-channel switching in the P- to Ku-bands. Control of the digitally controlled attenuator and phase shifter ensures output signal power and phase accuracy. The FPGA implements channel switching, recording, and data transmission. The FPGA controls the switching power supply enable function, ensuring remote power-on and power-off capabilities for the module.

[0029] like Figure 6 As shown in the figure, the power supply unit includes a switching power supply DCDC chip and a low-dropout linear regulator (LDO). The DCDC converts the input 28V voltage into the required internal voltages of +5.5V, -5.5V, +2.5V, -2.5V, and -40V. The LDO then suppresses power ripple and stray signals and stabilizes the voltages to 5V, -5V, and -2V, respectively.

[0030] For the sake of simplicity, the aforementioned embodiments are described as a series of actions. However, those skilled in the art should be aware that this application is not limited by the order of the actions described, because according to this application, some steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in this specification are preferred embodiments, and the actions involved are not necessarily required by this application.

[0031] The above embodiments describe the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Without departing from the spirit and scope of the present invention, modifications and variations made by those skilled in the art without departing from the spirit and scope of the present invention should be within the scope of protection of the appended claims.

Claims

1. A multi-channel receiving module with fast detection in the P-Ku band, characterized in that: It includes a limiting detection unit, a switch phase shift digitally controlled attenuation unit and a power amplifier switch unit connected in sequence, as well as a control unit for controlling each unit and a power supply unit for supplying power; the limiting detection unit includes six groups and is provided with six RF signal input ports. Each group of limiting detection units includes a limiter, a low-noise amplifier, a temperature compensation, an amplifier and a power divider connected in sequence, wherein the power divider is also connected to a detector and AD.

2. A multi-channel receiving module for rapid detection in the P-Ku band according to claim 1, characterized in that: Each group of the limiting detection units simultaneously receives external signals, limits the input signals, amplifies the power of small signals through two-stage amplification and temperature-compensated attenuation, and outputs two signals to the power divider. One signal is processed by the detector and outputs a DC signal to the AD for voltage acquisition, and the other signal is input to the subsequent unit link.

3. The multi-channel receiving module for fast detection in the P-Ku band according to claim 2, characterized in that: The detector adopts a fast ns-level fast detector, and the AD adopts a high-speed AD. The ns-level fast detector cooperates with the high-speed AD to perform fast detection and comparison to select the channel with the maximum signal.

4. The multi-channel receiving module for rapid detection in the P-Ku band according to claim 3, characterized in that: The switch phase-shifting digitally controlled attenuation unit includes a multi-channel switch, a digitally controlled phase shifter, a temperature-compensated attenuator, a low-noise amplifier, a digitally controlled attenuator, an equalizer, and multiple amplifiers. After the multi-channel switch is switched to the channel with the maximum signal, the phase and amplitude of the signal are controlled by the digitally controlled phase shifter and the digitally controlled attenuator.

5. The multi-channel receiving module for fast detection in the P-Ku band according to claim 4, characterized in that: The power amplifier switch unit includes a driving amplifier, a power amplifier and a high-power switch. The high-power switch adopts a ns-level high-power switch to switch the signal to the required channel output.

6. The multi-channel receiving module for rapid detection in the P-Ku band according to claim 5, characterized in that: The control unit includes a programmable gate array (FPGA), voltage and current monitoring, and temperature monitoring; the programmable gate array (FPGA) controls the ns-level high-power switch and ns-level fast detector to perform fast detection and multi-channel switching in the P-Ku band.

7. The multi-channel receiving module for rapid detection in the P-Ku band according to claim 6, characterized in that: The control of the programmable gate array FPGA also includes: controlling the digitally controlled attenuator and digitally controlled phase shifter to ensure the accuracy of the output signal power and phase; realizing channel switching recording and returning data, and controlling the enabling function of the switching power supply.

8. The multi-channel receiving module for rapid detection in the P-Ku band according to claim 7, characterized in that: The power supply unit includes a switching power supply DCDC chip and a low-voltage dropout linear regulator LDO. The switching power supply DCDC chip converts the input voltage into the internally required voltage levels, and then the low-voltage dropout linear regulator LDO suppresses the ripple and power supply stray signals on the power supply to achieve voltage stabilization.

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