Multi-frequency-point broadband signal generator and signal processing method

Abstract

The invention provides a multi-frequency-point broadband signal generator which mainly comprises a digital circuit module, and a local oscillation source module and a channel module which are connected with digital circuit module, wherein the local oscillation source module is also connected with the communication module. The invention has the beneficial effects that: the multi-frequency-point broadband signal generator is implemented by phase locking and frequency mixing, and can work normally in a bandwidth of 1GHz; furthermore, stray deterioration possibly occurred in a circuit is well suppressed; high stray performance and high phase noise performance are realized; and a good technical foundation is laid for synchronously outputting a plurality of frequency points.

Description

technical field [0001] The invention belongs to the technical field of electronic information, and specifically refers to a multi-frequency broadband signal generator. The multi-frequency wideband signal generator works in the ultrashort wave band (bandwidth 1GHz) and generates a variety of digital or analog modulated signals. Background technique [0002] Signal generators are used to generate modulation or carrier signals. According to the number of output frequencies of the signal generator, it can be divided into point frequency signal generator and multi-frequency point signal generator. Point-frequency signal generators output a single frequency point. Generally, this type of signal generator has high performance requirements such as phase noise and spurious suppression, and is often used as a high-performance single-frequency point local oscillator. The multi-frequency point signal generator works within a certain bandwidth, and can select frequency output (output a...

AI Technical Summary

Problems solved by technology

[0004] Multi-channel synthesis technology uses multiple signal generators, so the hardware system is relatively large, and the electromagnetic compatibility problem is not easy to solve when the signal generators are put together

In addition, due to the large amount of hardware, the power consumption is also large, the amount of debugging is increased, and the structure is also complicated

[0005] Controlling the PLL through the MCU and then frequency multiplication and frequency division synthesis technology has the advantage of using less hardware, but the reference frequency of the PLL is not high, making it difficult to achieve high key indicators such as phase noise and spurious signals.

Moreover, when a separate phase-locking + frequency multiplication + frequency division synthesis is applied to an ultra-wideband system, the frequency hopping time will be very slow

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