Ultra-wideband radio frequency signal source and use method thereof
By designing an ultra-wideband RF signal source that combines signal generation module, switch, amplification filter module and variable gain module, the problem of high cost of broadband RF signal source in the prior art is solved, and the frequency output of 10MHz to 19GHz is achieved Stable, economical and simple design.
Patent Information
- Application Number
- CN202411400159.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-09
- Publication Date
- 2025-02-11
AI Technical Summary
The existing broadband RF signal sources are costly and it is difficult to meet the needs of electronic warfare in modern warfare.
An ultra-wideband radio frequency signal source is designed, using a combination of signal generation module, a first-stage switch, several amplification and filtering modules, a second-stage switch, a variable gain module and a control module to achieve control signal generation and output through the control module. 10MHz to 19GHz frequency output.
It realizes a simple design, low cost, stable and reliable ultra-wideband RF signal source, which can output broadband RF signals, with a frequency range covering 10MHz to 19GHz, stable signal quality, and simple structure for design.
Smart Images
Figure CN119420294A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of radio frequency technology, and in particular to an ultra-wideband radio frequency signal source and a use method thereof. Background Art
[0002] The current modern war is mainly conducted around electronic warfare. Electronic warfare refers to the military struggle between hostile parties for the right to use and control the electromagnetic spectrum, including electronic reconnaissance and counter-reconnaissance, electronic interference and counter-interference, electronic deception and counter-deception, electronic stealth and counter-stealth, electronic destruction and counter-destruction, etc. The innovation of these technologies is basically inseparable from the support of related instruments and meters, and the RF signal source is a relatively common instrument. However, the common broadband RF signal sources on the market are relatively expensive. Summary of the invention
[0003] The purpose of the present invention is to provide an ultra-wideband radio frequency signal source and a method of using the same. The radio frequency signal source can provide a broadband radio frequency signal output with an output frequency of up to 10MHz to 19GHz, and has a simple structure, is easy to design, and has low cost.
[0004] In order to achieve the above object, the technical solution provided by the present invention is as follows:
[0005] According to a first aspect of the present invention, there is provided an ultra-wideband radio frequency signal source, comprising: a signal generation module, a first-stage switch, a plurality of amplification and filtering modules, a second-stage switch, a variable gain module and a control module;
[0006] The signal generation module is connected to the input ends of the amplifying and filtering modules through the first-stage switch, the output ends of the amplifying and filtering modules are connected to the variable gain module through the second-stage switch, and the control module is connected to the signal generation module, the first-stage switch, the second-stage switch and the variable gain module;
[0007] The control module controls the signal generation module to generate a 10MHz to 19GHz RF signal, and then selects the corresponding amplification and filtering module through the first-stage switch according to the required signal frequency to obtain a stable, reliable RF signal without spurious harmonics. Similarly, the second-stage switch is controlled to switch to the corresponding amplification and filtering module to output the RF signal to the variable gain module. Finally, the variable gain module is controlled to control the output RF signal power amplitude to obtain the required RF signal.
[0008] Furthermore, the signal generation module generates a frequency modulated continuous wave and a linear frequency modulated pulse wave.
[0009] Furthermore, the signal generation module includes a reference clock with high precision and high stability and a phase-locked loop with broadband signal output capability.
[0010] Furthermore, the first-stage switch and the second-stage switch are single-pole multi-throw electronic switches.
[0011] Furthermore, the amplification and filtering module includes an amplifier and a filter.
[0012] Furthermore, the variable gain module is a digitally controlled attenuator chip.
[0013] Furthermore, the control module is a combination of an MCU, a liquid crystal display and a key switch.
[0014] Furthermore, the control module is a single chip microcomputer, and a control module plus a host computer software control mode is adopted to control the required output of the ultra-wideband radio frequency signal source.
[0015] Furthermore, the signal generating module, the first stage switch, several amplifying and filtering modules, the second stage switch and the variable gain module are connected via a radio frequency cable, and the control module is electrically connected to the signal generating module, the first stage switch, the second stage switch and the variable gain module.
[0016] According to a second aspect of the present invention, there is provided a method for using the ultra-wideband radio frequency signal source as described in any one of the above, comprising the following steps:
[0017] The control module controls the signal generation module to generate a 10MHz to 19GHz RF signal, and then selects the corresponding amplification and filtering module through the first-stage switch according to the required signal frequency to obtain a stable, reliable RF signal without spurious harmonics. Similarly, the second-stage switch is controlled to switch to the corresponding amplification and filtering module to output the RF signal to the variable gain module. Finally, the variable gain module is controlled to control the output RF signal power amplitude to obtain the required RF signal.
[0018] Compared with the prior art, the present invention has the following advantages and beneficial effects:
[0019] The present invention can form an ultra-wideband radio frequency signal source with simple design, low cost, stability and reliability by combining some low-cost chips. The radio frequency signal source can provide broadband radio frequency signal output, and the output frequency can reach 10MHz~19GHz. The output signal includes but is not limited to the output of frequency-modulated continuous wave and frequency-modulated pulse wave, and has a simple structure, is easy to design and has low cost. The control module can select the corresponding amplification and filtering module through the first-stage switch and the second-stage switch according to the required signal frequency, so as to obtain a stable, reliable radio frequency signal without stray harmonics, and then control the variable gain module to control the output radio frequency signal power amplitude to obtain the required radio frequency signal. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a schematic diagram of the composition of an ultra-wideband radio frequency signal source of an example of the present invention;
[0021] Figure 2 It is a schematic diagram of the composition of a second ultra-wideband radio frequency signal source of an example of the present invention;
[0022] Figure 3 It is a control mode schematic diagram of an example of the present invention;
[0023] Figure 4 Schematic diagram of the second control mode of the present invention. DETAILED DESCRIPTION
[0024] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
[0025] The present invention discloses an ultra-wideband radio frequency signal source, and the signal source in the ultra-wideband frequency range includes: a signal generating module A, a first-stage switch B, an amplifying and filtering module C, D, E, F, a second-stage switch G, a variable gain module H and a control module I. The control module I controls the signal generating module A to generate a stable and reliable radio frequency signal, and then selects the amplifying and filtering modules C, D, E, F through the first-stage switch B according to the required signal frequency to obtain a stable and reliable radio frequency signal without stray harmonics. Similarly, the second-stage switch G is controlled to switch to the corresponding amplifying and filtering module channel to output a stable and reliable radio frequency signal, and finally the control module I controls the variable gain module H to control the output radio frequency signal power amplitude to obtain the required radio frequency signal. In summary, a simple-design, low-cost, stable and reliable ultra-wideband radio frequency signal source can be completed, and the output frequency of the signal source can reach 10MHz to 19GHz.
[0026] Embodiment 1
[0027] This embodiment provides an ultra-wideband radio frequency signal source, such as Figure 1 As shown, it includes: a signal generating module A, a first-stage switch B, an amplifying and filtering module C, D, E, F, a second-stage switch G, a variable gain module H and a control module I. Among them, the control module I controls the signal generating module A to generate a stable and reliable radio frequency signal, and then selects the amplifying and filtering modules C, D, E, F through the first-stage switch B according to the required signal frequency to obtain a stable and reliable radio frequency signal without stray harmonics. Similarly, the second-stage switch G is controlled to switch to the corresponding amplifying and filtering module channel to output a stable and reliable radio frequency signal. Finally, the control module I controls the variable gain amplifier H to control the output radio frequency signal power amplitude to obtain the required output frequency of 10MHz to 19GHz radio frequency signal.
[0028] In this embodiment, the signal generation module A can generate a corresponding RF signal according to the RF signal required by the control module I, and is connected to the first-stage switch B through a microstrip line. The signal generation module A, the first-stage switch B, the amplification and filtering modules C, D, E, F, the second-stage switch G, and the variable gain module H are also connected through RF cables.
[0029] The signal generation module can output stable and reliable frequency modulated continuous wave and linear frequency modulated pulse wave. The signal generation module has a high-precision, high-stability reference clock and a phase-locked loop with broadband signal output capability. Optionally, the signal generation module A is a low-frequency constant temperature crystal oscillator and a phase-locked loop.
[0030] The first-stage switch B is a single-pole multi-throw electronic switch, and the second-stage switch G is also a single-pole multi-throw electronic switch, or a mechanical switch. The first-stage switch B and the second-stage switch G are controlled by the control module I at the same time, and the corresponding amplification and filtering module is selected according to the RF signal frequency required by the control module I. The amplification and filtering modules C, D, E, and F are composed of amplifiers and filters of corresponding frequencies.
[0031] The variable gain module is an adjustable gain chip, such as a digitally controlled attenuator chip. The variable gain module H is controlled by the control module I, adjusts the gain according to the RF signal amplitude required by the control module I, and outputs the RF signal through the connector.
[0032] The control module is a single chip microcomputer. The control module I is used to control the entire ultra-wideband radio frequency signal source, and the control module I is electrically connected to the signal generation module A, the first stage switch B, the second stage switch G, and the variable gain module H.
[0033] Embodiment 2
[0034] This embodiment provides another ultra-wideband radio frequency signal source, such as Figure 2 As shown, it includes: a signal generating module A, a first-stage switch B, a plurality of amplifying and filtering modules C, D, E, F, a second-stage switch G, a variable gain module H and a control module I. Among them, the control module I controls the signal generating module A to generate a stable and reliable RF signal, and then selects a corresponding one of the amplifying and filtering modules C, D, E, and F through the first-stage switch B according to the required signal frequency to obtain a stable and reliable RF signal without spurious harmonics. Similarly, the second-stage switch G is controlled to switch to the corresponding amplifying and filtering module channel to output a stable and reliable RF signal. Finally, the control module I controls the variable gain module H to control the output RF signal power amplitude to obtain the required RF signal.
[0035] In this embodiment, the signal generation module A uses a low-frequency constant temperature crystal oscillator and a broadband frequency synthesizer, which can synthesize any frequency in the range of 10MHz to 19GHz. The output signal in such a wide frequency range can also control the gain adjustment of the chip through the control module I. At the same time, the device has an excellent quality factor, and has a high phase detector and does not require pre-division, so that the output signal has very low noise in the band and extremely low spurious amplitude. The frequency synthesizer can synchronize the output of multiple devices and can be used in situations where a delay is required between the input and output. The frequency ramp generator can synthesize up to 2 ramps in the automatic ramp generation option or the manual option to achieve maximum flexibility.
[0036] After the signal generation module A generates the required signal, it can select the corresponding amplification and filtering channel according to its frequency range by switching the first-stage switch B. After amplification and filtering, the clean signal without spurious harmonics is switched through the second-stage switch G through the microstrip line and enters the variable gain module H. The control module I can control the variable gain module H to adjust the power of the final output signal to obtain the required signal power. The control module I can also control the signal generation module A according to the needs to generate the required frequency-modulated continuous wave and single-frequency pulse wave.
[0037] like Figure 2 As shown, based on the first embodiment, the number of filter channels can be designed according to the specific required frequency band, and the filter channels are not limited to the amplifier plus filter mode. The filter channel can use an amplifier cascade plus an attenuator to eliminate the self-excitation phenomenon in the circuit, and the filter can add low-pass, high-pass, band-pass, sound surface, etc. filters according to actual needs to eliminate harmonics and spurious.
[0038] like Figure 3 As shown, the control module I can select a combination of MCU plus a liquid crystal display and a key switch to achieve the signal output required by the radio frequency signal source. The step of changing the MCU program in the previous example is omitted, which greatly facilitates the use of the radio frequency signal source.
[0039] like Figure 4 As shown, the desired output of the RF signal source can be controlled by using a control module I plus a host computer software J control mode, and the desired output of the signal source can be controlled by a simple host computer control command.
[0040] In the embodiment of the present invention, the first-stage switch B and the second-stage switch G are not limited to single-pole four-throw switches. The amplification and filtering modules are not limited to the four modules C, D, E, and F. The modules are not limited to being connected by microstrip lines on a printed circuit board, but can also be connected by radio frequency cables through each individual module.
[0041] The present invention allows technicians familiar with the field to easily design a radio frequency signal source. The radio frequency signal source of the present invention is simple in design, low in cost, easy to obtain, and has a wide output frequency range. It can output frequency-modulated continuous waves and single-frequency pulse waves by rationally utilizing chip resources, which can bring great convenience.
[0042] It should be noted that the order of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.
[0043] It should be pointed out that, according to the needs of implementation, the various steps / components described in this application can be split into more steps / components, and two or more steps / components or partial operations of steps / components can be combined into new steps / components to achieve the purpose of the present invention.
[0044] It will be easily understood by those skilled in the art that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. An ultra-wideband radio frequency signal source, characterized in that: include: A signal generation module, a first-stage switch, a number of amplification and filtering modules, a second-stage switch, a variable gain module and a control module; The signal generation module is connected to the input ends of the amplifying and filtering modules through the first-stage switch, the output ends of the amplifying and filtering modules are connected to the variable gain module through the second-stage switch, and the control module is connected to the signal generation module, the first-stage switch, the second-stage switch and the variable gain module; The control module controls the signal generation module to generate a 10MHz to 19GHz RF signal, and then selects the corresponding amplification and filtering module through the first-stage switch according to the required signal frequency to obtain a stable, reliable RF signal without spurious harmonics. Similarly, the second-stage switch is controlled to switch to the corresponding amplification and filtering module to output the RF signal to the variable gain module. Finally, the variable gain module is controlled to control the output RF signal power amplitude to obtain the required RF signal.
2. The ultra-wideband radio frequency signal source according to claim 1, characterized in that: The signal generation module generates frequency modulated continuous waves and linear frequency modulated pulse waves.
3. The ultra-wideband radio frequency signal source according to claim 1, characterized in that: The signal generation module includes a reference clock with high precision and high stability and a phase-locked loop with broadband signal output capability.
4. The ultra-wideband radio frequency signal source according to claim 1, characterized in that: The first-stage switch and the second-stage switch are single-pole multi-throw electronic switches.
5. The ultra-wideband radio frequency signal source according to claim 1, characterized in that: The amplification and filtering module includes an amplifier and a filter.
6. The ultra-wideband radio frequency signal source according to claim 1, characterized in that: The variable gain module is a digitally controlled attenuator chip.
7. The ultra-wideband radio frequency signal source according to claim 1, characterized in that: The control module is a combination of MCU, LCD and key switches.
8. The ultra-wideband radio frequency signal source according to claim 1, characterized in that: The control module is a single chip microcomputer, and the required output of the ultra-wideband radio frequency signal source is controlled by a control module plus a host computer software control mode.
9. The ultra-wideband radio frequency signal source according to claim 1, characterized in that: The signal generation module, the first stage switch, several amplification and filtering modules, the second stage switch and the variable gain module are connected through a radio frequency cable, and the control module is electrically connected to the signal generation module, the first stage switch, the second stage switch and the variable gain module.
10. A method for using the ultra-wideband radio frequency signal source according to any one of claims 1 to 9, characterized in that: The following steps are involved: The control module controls the signal generation module to generate a 10MHz to 19GHz RF signal, and then selects the corresponding amplification and filtering module through the first-stage switch according to the required signal frequency to obtain a stable, reliable RF signal without spurious harmonics. Similarly, the second-stage switch is controlled to switch to the corresponding amplification and filtering module to output the RF signal to the variable gain module. Finally, the variable gain module is controlled to control the output RF signal power amplitude to obtain the required RF signal.