CN212875811U - Portable radio frequency analysis device and system - Google Patents

Abstract

The utility model provides a portable radio frequency analysis system and a device, wherein the system comprises an antenna module, an SDR receiver module and a mobile client device; the output end of the antenna module is connected with the input end of the SDR receiver module, and the output end of the SDR receiver module is connected with the mobile client device; the SDR receiver module comprises an anti-aliasing filtering submodule, a mixer submodule, a radio frequency broadband receiver submodule, a broadband digital-to-analog conversion submodule and an SOC submodule which are sequentially connected, and the SOC submodule is respectively connected with the anti-aliasing filtering submodule, the mixer submodule, the radio frequency broadband receiver submodule, the broadband digital-to-analog conversion submodule and the antenna module. The utility model discloses circuit structure is simple, and stability is high, and is with low costs, and the facilitate promotion is implemented.

Description

Portable radio frequency analysis device and system

Technical Field

The utility model belongs to the technical field of communication, concretely relates to portable radio frequency analysis device and system.

Background

With the development of the communication field, the use of radio frequency is more and more, the spectrum space is more and more complex, and the spectrum resource is more and more precious. Therefore, in network planning, a radio frequency analyzer capable of testing different standards is very urgent.

The general rf analyzer requires flexible configuration to meet test requirements, software control to adapt to different communication standards, broadband characteristics, and the receiver should be an open system. Radio frequency analyzers in the current market are various in types and powerful in functions, but often have the defects of high price, large size, inconvenience in carrying, complex operation, poor software interface friendliness and the like. However, some of the "handheld" and "portable" rf analyzers are often unsatisfactory in practical portability and have certain limitations in functionality. How to improve the portability and usability of the apparatus while ensuring a measurable frequency bandwidth, and to keep the product cost within a range that customers prefer to accept, is an important focus of the development of radio frequency analyzers today.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to prior art defect, provided a portable radio frequency analysis device, it has the characteristics that frequency resolution is high, the portability is good, the frequency bandwidth.

In order to achieve the above purpose, the technical scheme adopted by the device of the utility model is a portable radio frequency analysis system, which comprises an antenna module, an SDR receiver module and a mobile client device; the output end of the antenna module is connected with the input end of the SDR receiver module, and the output end of the SDR receiver module is connected with the mobile client device;

the SDR receiver module comprises an anti-aliasing filtering submodule, a mixer submodule, a radio frequency broadband receiver submodule, a broadband digital-to-analog conversion submodule and an SOC submodule which are sequentially connected, and the SOC submodule is respectively connected with the anti-aliasing filtering submodule, the mixer submodule, the radio frequency broadband receiver submodule, the broadband digital-to-analog conversion submodule and the antenna module.

And the output of the antenna module is subjected to low-pass filtering by the anti-aliasing filtering submodule, and the obtained signal is input into the mixer submodule.

And after the frequency mixer submodule carries out frequency mixing, the obtained signal enters a radio frequency broadband receiver submodule.

And after the radio frequency broadband receiver submodule converts the radio frequency signal into the broadband, the obtained signal enters a broadband digital-to-analog conversion submodule.

And after the broadband digital-to-analog conversion submodule carries out broadband AD conversion, the obtained signal is transmitted into the SOC submodule.

And the frequency spectrum data obtained after the processing of the SOC submodule is transmitted to the mobile client equipment through a USB data line, and the mobile client equipment outputs and displays the obtained radio frequency analysis result.

And the output end of the SDR receiver module is connected with the mobile client equipment through a USB3.0 data line.

Moreover, the mobile client device outputs a reception or stop reception command, which is input to the antenna module via the SOC sub-module.

Moreover, the mobile client device adopts a mobile phone.

The utility model also provides a portable radio frequency analysis device, which comprises an antenna module and an SDR receiver module, wherein the output end of the antenna module is connected with the input end of the SDR receiver module;

the SDR receiver module comprises an anti-aliasing filtering submodule, a mixer submodule, a radio frequency broadband receiver submodule, a broadband digital-to-analog conversion submodule and an SOC submodule which are sequentially connected, and the SOC submodule is respectively connected with the anti-aliasing filtering submodule, the mixer submodule, the radio frequency broadband receiver submodule, the broadband digital-to-analog conversion submodule and the antenna module.

The utility model has the advantages of it is following:

(1) the portable radio frequency analysis device can support discrete spectrum correction, has the characteristic of high frequency resolution, can be widely used for experiment teaching and amateurs, can be used for users to transmit radio frequency signals with different frequency bands and carry out detection and analysis on the radio frequency signals, and can be used for detecting complex radio frequency spaces by the users; when the device provided by the utility model is used, the flexibility and the openness are very strong;

(2) the broadband characteristic is strong in universality and small in error;

(3) when in use, the mobile terminal supports interaction, so that the operation is simple and the carrying is convenient;

(4) the circuit structure is simple, and the stability is high;

(5) the cost is low, so the price is low, the popularization and the implementation are convenient, and the market value is important.

Drawings

Fig. 1 is a general structural diagram of a first embodiment of the present invention.

Detailed Description

To facilitate understanding and practice of the present invention for those of ordinary skill in the art, the present invention will be described in further detail with reference to the accompanying drawings and examples, it being understood that the embodiments described herein are merely illustrative and explanatory of the device of the present invention and are not restrictive of the only configuration of the device of the present invention.

As shown in fig. 1, a portable radio frequency analysis system according to an embodiment of the present invention includes an antenna module, an SDR receiver module, and a mobile client device; the output end of the antenna module is connected with the input end of the SDR receiver module, and the output end of the SDR receiver module is connected with the mobile client device. Preferably, the SDR receiver module output is connected to the mobile client device bi-directional input/output via a USB3.0 data line.

The antenna module provides a radio frequency receiving antenna to receive signals. Namely, the antenna module is used for receiving electric wave signals in the space.

The SDR receiver module comprises an anti-aliasing filtering submodule (which can be realized by adopting a high-low-pass/bypass filter), a mixer submodule, a radio frequency broadband receiver submodule, a broadband digital-to-analog conversion submodule and an SOC submodule. The high-low-pass/bypass filtering submodule, the mixer submodule, the radio frequency broadband receiver submodule, the broadband digital-to-analog conversion submodule and the SOC submodule are connected in sequence. The SOC submodule is respectively connected to the high-low-pass/bypass filtering submodule, the mixer submodule, the radio frequency broadband receiver submodule, the broadband digital-to-analog conversion submodule and the antenna module, and can send out corresponding control signals or forward control signals from the mobile client according to requirements in specific implementation.

The SDR receiver module is used for performing digital signal conversion and basic processing on digital signals, SDR represents a software radio, and is a circuit module for processing software radio signals (such as GPS signals), wherein each sub-module functions as follows:

(1) an anti-aliasing filtering sub-module: in order to prevent the occurrence of spectrum aliasing when the analog signal is discretized, a low-pass filter is used for limiting the signal bandwidth before sampling;

(2) a mixer submodule: the frequency mixing device is used for mixing frequency so that the obtained intermediate frequency signal has a lower frequency than the original signal;

(3) radio frequency broadband receiver submodule: the conversion of the radio frequency signal to the broadband is realized;

(4) a broadband digital-to-analog conversion submodule: realizing the digital conversion of the broadband;

(5) SOC submodule: the noise in the received data is filtered, and the signals are processed into data and presented to the radio frequency analysis module. Where SOC denotes a system on chip.

The preferred implementation of each sub-module in the SDR receiver module suggests the following:

in the sub-module of the frequency mixer, an RFFC5072 frequency mixer is selected to provide a local oscillator from 80MHz to 4200 MHz;

in the anti-aliasing filtering submodule, MAX7414 is selected as an anti-aliasing filter;

in the radio frequency broadband receiver submodule, a MAX2837 wireless broadband radio frequency receiver is selected, and the working frequency band is between 2.3GHz and 2.7 GHz;

in the broadband digital-to-analog conversion sub-module, MAX5864 ADC/DAC is selected, and the 22MHz sampling rate is 8 bits;

in the SOC submodule, an LPC4330 ARM Cortex M4 processor is selected as a digital signal processor to realize FIR filtering, and the main frequency is 204 MHz.

The mobile client device may employ existing devices such as a cell phone to implement radio frequency analysis.

During specific implementation, the mobile client device can support parameter setting, operation instruction sending, analysis result output and display, data uploading to the cloud and the like.

Specifically, a radio frequency receiving antenna in the antenna module is connected to an anti-aliasing filtering submodule, and the SOC submodule is connected with a bidirectional input/output end of the mobile client device through a USB3.0 data line.

In the first embodiment, the mobile client device adopts an charming MX3 smart phone based on an Android 4.2 operating system. The CPU model of the charm MX3 is a Samsung Exynos 5410 which is a double quad-core CPU; the CPU model is Imagination SGX544 and supports OpenCL; the memory is 2GB, and the ROM capacity of the user machine is 128 GB.

During concrete implementation, can adopt current video analysis technique, set up parameter and show result etc. and also belong to conventional customer end support, do not belong to the utility model discloses a protection scope. The utility model discloses only require protection hardware device.

The second embodiment provides a portable radio frequency analysis device, which comprises an antenna module and an SDR receiver module. Specific implementation can be seen in example one. In particular, the portable radio frequency analysis device may be manufactured and sold separately, and the user may prepare the mobile client device by himself.

For ease of reference, the proposed workflow using the system provided by the present invention is provided as follows:

when the signal is received, a receiving instruction is sent from the mobile client device, the antenna module is set to be in a receiving state through the SOC submodule, and the set parameter data are transmitted to the SOC submodule. In specific implementation, the SOC submodule parameters that can be set according to needs include center frequency, cut-off frequency, amplitude (including reference level and amplitude unit), peak value, resolution bandwidth, and the like.

The antenna module acquires signals from an external space, the output of the antenna module is subjected to high-low pass/bypass filtering through the anti-aliasing filtering submodule, the input of the anti-aliasing filtering submodule enters the frequency mixer submodule to perform frequency mixing, the output of the frequency mixer submodule enters the radio frequency broadband receiver submodule to perform conversion of radio frequency signals to broadband, the output of the radio frequency broadband receiver submodule enters the broadband digital-to-analog conversion submodule to perform broadband AD conversion, the signals output by the broadband digital-to-analog conversion submodule are transmitted into the SOC submodule to be processed, the processed frequency spectrum data is transmitted to the mobile client device through the USB data line, radio frequency analysis and display are performed by the mobile client device, and data generated in the process are uploaded to the cloud. After the spectrum analysis is finished, a receiving finishing signal can be sent from the mobile client device, the receiving finishing signal is sent to the antenna module through the SOC sub-module, and the device stops working.

The portable radio frequency analysis device provided by the embodiment has the characteristics of flexibility and openness and a modular structure, and when the portable radio frequency analysis device is specifically implemented, a user can utilize the device to perform software programming or software upgrading to expand different functions. But still be within the scope of the present invention.

It should be understood that the above-mentioned embodiments are only used for describing the present invention, and are not intended to limit the scope of the present invention, and those skilled in the art can substitute or modify the above-mentioned embodiments without departing from the scope of the present invention.

Claims (10)

1. A portable radio frequency analysis system, characterized by: the system comprises an antenna module, an SDR receiver module and mobile client equipment; the output end of the antenna module is connected with the input end of the SDR receiver module, and the output end of the SDR receiver module is connected with the mobile client device;

the SDR receiver module comprises an anti-aliasing filtering submodule, a mixer submodule, a radio frequency broadband receiver submodule, a broadband digital-to-analog conversion submodule and an SOC submodule which are sequentially connected, and the SOC submodule is respectively connected with the anti-aliasing filtering submodule, the mixer submodule, the radio frequency broadband receiver submodule, the broadband digital-to-analog conversion submodule and the antenna module.

2. A portable radio frequency analysis system according to claim 1, wherein: and the output of the antenna module is subjected to low-pass filtering by the anti-aliasing filtering submodule, and the obtained signal is input into the frequency mixer submodule.

3. A portable radio frequency analysis system according to claim 1, wherein: and after the frequency mixer submodule carries out frequency mixing, the obtained signal enters a radio frequency broadband receiver submodule.

4. A portable radio frequency analysis system according to claim 1, wherein: and after the radio frequency broadband receiver submodule converts the radio frequency signal into the broadband, the obtained signal enters a broadband digital-to-analog conversion submodule.

5. A portable radio frequency analysis system according to claim 1, wherein: after the broadband digital-to-analog conversion submodule carries out broadband AD conversion, the obtained signal is transmitted into the SOC submodule.

6. A portable radio frequency analysis system according to claim 1, wherein: and transmitting the frequency spectrum data processed by the SOC submodule to the mobile client equipment through a USB data line, and outputting and displaying the obtained radio frequency analysis result by the mobile client equipment.

7. A portable radio frequency analysis system according to claim 6, wherein: the output end of the SDR receiver module is connected with the mobile client device through a USB3.0 data line.

8. A portable radio frequency analysis system according to claim 1, wherein: the mobile client device outputs a receiving or stopping receiving command, and the receiving or stopping receiving command is input to the antenna module through the SOC sub-module.

9. A portable radio frequency analysis system according to claim 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8, wherein: the mobile client device adopts a mobile phone.

10. A portable radio frequency analysis device, characterized by: the antenna comprises an antenna module and an SDR receiver module, wherein the output end of the antenna module is connected with the input end of the SDR receiver module;

the SDR receiver module comprises an anti-aliasing filtering submodule, a mixer submodule, a radio frequency broadband receiver submodule, a broadband digital-to-analog conversion submodule and an SOC submodule which are sequentially connected, and the SOC submodule is respectively connected with the anti-aliasing filtering submodule, the mixer submodule, the radio frequency broadband receiver submodule, the broadband digital-to-analog conversion submodule and the antenna module.

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