Radio frequency pulse signal source generation circuit

A technology for generating circuits and radio frequency pulses, which is applied in the field of radio frequency pulse signal source generation circuits, can solve problems such as insufficient modulation depth and complex circuits, and achieve the effect of controllable power and high suppression

CN114679162APending Publication Date: 2022-06-28FUJIAN XINGHAI COMM TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2022-06-28

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Abstract

The invention relates to the technical field of radio frequency pulse signal source generation circuits, in particular to a radio frequency pulse signal source generation circuit, which comprises a frequency source module, a radio frequency switch module, a voltage-controlled gain adjustable module, a numerical control attenuation module and a main control module, the voltage-controlled gain adjustable module is electrically connected with the radio frequency switch module and the numerical control attenuation module, the frequency source module communicates with the main control module to obtain a corresponding frequency setting code, and the frequency source module sets a register corresponding to the frequency source module according to data obtained from the main control module; the radio frequency switch module and the voltage-controlled gain adjustable module are arranged to realize pulse modulation of signals, the signals modulated by the radio frequency switch module are continuously sent to the voltage-controlled gain adjustable module, and finally the modulated radio frequency signals are sent to the numerical control attenuation module, so that the purpose of controllable power sent to a receiver is realized. And thus, high suppression degree on continuous waves is realized.
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Description

technical field

[0001] The invention relates to the technical field of a radio frequency pulse signal source generating circuit, in particular to a radio frequency pulse signal source generating circuit. Background technique

[0002] In the prior art, pulse modulation is performed by using a variable gain amplifier controlled by a three-stage negative pressure. In this way, the pulse needs to be modulated in reverse phase first, which not only has a complicated circuit, but also has insufficient modulation depth. SUMMARY OF THE INVENTION

[0003] The technical problem to be solved by the present invention is to provide a radio frequency pulse signal source generating circuit to achieve a high degree of suppression of continuous waves.

[0004] In order to solve the above-mentioned technical problems, the technical scheme adopted in the present invention is:

[0005] A radio frequency pulse signal source generating circuit includes a frequency source module, a radio freque...

Examples

Embodiment 1

[0031] Please refer to Figure 1 to Figure 4 , the first embodiment of the present invention is:

[0032] Please refer to figure 1 , a radio frequency pulse signal source generating circuit, comprising a frequency source module 1, a radio frequency switch module 2, a voltage-controlled gain adjustable module 3, a numerical control attenuation module 4 and a main control module 5, the main control module 5 and the frequency source module 5 respectively. The 1 is electrically connected to the digitally controlled attenuation module 4 , the voltage-controlled gain adjustable module 3 is electrically connected to the radio frequency switch module 2 and the digitally controlled attenuation module 4 respectively, and the radio frequency switch module 2 is electrically connected to the frequency source module 1 .

[0033] Please refer to figure 2 The frequency source module 1 includes a chip N3, the model of the chip N3 is ADF4350, the twelfth pin of the chip N3 and the thirteenth...