CN205377832U

CN205377832U - Novel frequency source

Info

Publication number: CN205377832U
Application number: CN201521090143.2U
Authority: CN
Inventors: 吴杰; 胡明武
Original assignee: Chengdu Renjian Microwave Technology Co Ltd
Current assignee: Chengdu Renjian Microwave Technology Co Ltd
Priority date: 2015-12-24
Filing date: 2015-12-24
Publication date: 2016-07-06
Anticipated expiration: 2025-12-24

Abstract

The utility model discloses a novel frequency source, including constant temperature crystal oscillator, PFD, loop filter, supplementary phase lock circuitry, voltage controlled oscillator module, amplitude equalizer, wave filter, N frequency divider and control section, PFD is connected in the constant temperature competition, and PFD still connects loop filter and N frequency divider respectively, and the voltage controlled oscillator module is connected to loop filter's output, and supplementary phase lock circuitry, N frequency divider and amplitude equalizer are still connected respectively to the voltage controlled oscillator module, and the N frequency divider is the connection control part still, and the wave filter is still connected to the amplitude equalizer. The utility model discloses novel frequency source has the low power dissipation, and it is low to make an uproar mutually, and the power swing is little, and spurious suppression is high, small advantage.

Description

A kind of novel frequency source

Technical field

This utility model relates to a kind of signal processing circuit, specifically a kind of novel frequency source.

Background technology

This utility model frequency source is answer customer requirement and the novel frequency product-derived developed, the system that is mainly provides local oscillation signal, but it also apply be applicable in other electronic system, in the equipment such as radar, navigation, space flight, provide local oscillation signal, carrier signal and self-test signal for these electronic systems.

This utility model frequency source is single port input reference frequency, single port output 12G～18G frequency combine signal frequency source product (with traditional frequency source product on export structure in form identical), but it successfully passes analog form and realizes product and fluctuate less than ± 1.5dB in operating temperature (-40 DEG C～+70 DEG C), working frequency range (12G～18G), full frequency band power swing less than ± that 2.0dB(has power than traditional digital form is more reliable, provides relatively reliable signal power degree of stability for rear class system).

Utility model content

The purpose of this utility model is in that to provide a kind of novel frequency source, with the problem solving to propose in above-mentioned background technology.

For achieving the above object, this utility model provides following technical scheme:

A kind of novel frequency source, including constant-temperature crystal oscillator, PFD, loop filter, auxiliary lock circuitry phase, VCO module, amplitude equalizer, wave filter, Fractional-N frequency device and control part, described constant-temperature crystal oscillator connects PFD, PFD is also respectively connected with loop filter and Fractional-N frequency device, the outfan of loop filter connects VCO module, VCO module is also respectively connected with auxiliary lock circuitry phase, Fractional-N frequency device and amplitude equalizer, Fractional-N frequency device is also connected with control part, and amplitude equalizer is also connected with wave filter.

As preferred version of the present utility model: the frequency of described constant-temperature crystal oscillator is 100MHZ.

Compared with prior art, the beneficial effects of the utility model are: this utility model novel frequency source has low in energy consumption, makes an uproar mutually low, and power swing is little, and spurious reduction is high, the advantage that volume is little.

Accompanying drawing explanation

Fig. 1 is the structured flowchart in novel frequency source.

Detailed description of the invention

Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of this utility model, rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of this utility model protection.

Refer to Fig. 1, a kind of novel frequency source, including constant-temperature crystal oscillator, PFD, loop filter, auxiliary lock circuitry phase, VCO module, amplitude equalizer, wave filter, Fractional-N frequency device and control part, described constant-temperature crystal oscillator connects PFD, PFD is also respectively connected with loop filter and Fractional-N frequency device, the outfan of loop filter connects VCO module, VCO module is also respectively connected with auxiliary lock circuitry phase, Fractional-N frequency device and amplitude equalizer, Fractional-N frequency device is also connected with control part, and amplitude equalizer is also connected with wave filter.

The frequency of constant-temperature crystal oscillator is 100MHZ.

Operation principle of the present utility model is: the frequency signal in the design frequency source is realized by PLL technology, major part is: PFD, crystal oscillator, frequency divider, loop filter, voltage controlled oscillator control, secondary locking circuit, these circuit energy co-ordinations, the rate-adaptive pacemaker of 12G～18G is made by control part；Then recycling monolithic equalizer, microwave diode, the amplitude equalizer that circuit impedance coupling is formed realizes the steady of power.

Frequency source, in the system of user, uses mainly as local oscillation frequency signal, also standby for self-inspection source signal.

Claims

1. a novel frequency source, including constant-temperature crystal oscillator, PFD, loop filter, auxiliary lock circuitry phase, VCO module, amplitude equalizer, wave filter, Fractional-N frequency device and control part, it is characterized in that, described constant-temperature crystal oscillator connects PFD, PFD is also respectively connected with loop filter and Fractional-N frequency device, the outfan of loop filter connects VCO module, VCO module is also respectively connected with auxiliary lock circuitry phase, Fractional-N frequency device and amplitude equalizer, Fractional-N frequency device is also connected with control part, and amplitude equalizer is also connected with wave filter.

2. according to a kind of novel frequency source described in claim 1, it is characterised in that the frequency of described constant-temperature crystal oscillator is 100MHZ.