CN208272952U

CN208272952U - Universal broadband Low phase noise is mixed frequency of phase locking source

Info

Publication number: CN208272952U
Application number: CN201821564031.XU
Authority: CN
Inventors: 史跃跃; 张琼月
Original assignee: Dfine Technology Co Ltd
Current assignee: Dfine Technology Co Ltd
Priority date: 2018-09-25
Filing date: 2018-09-25
Publication date: 2018-12-21
Anticipated expiration: 2028-09-25

Abstract

The utility model discloses universal broadband Low phase noises to be mixed frequency of phase locking source, comprising: phase discriminator, low-pass filter A, broadband VCO, coupler, amplifier, frequency divider, frequency mixer and low-pass filter B；The input terminal of broadband VCO is connected to after the low-pass filtered device A of the output end of phase discriminator, the output end of broadband VCO connects coupler, the straight-through end of the coupler is the output of frequency source signal, its coupled end is connected to frequency divider after amplifier, the output end of the frequency divider is connected to frequency mixer, and the input terminal of phase discriminator is connected to after the low-pass filtered device B of the output end of the frequency mixer；The input terminal of the frequency mixer is also connected with local oscillation signal；The input terminal of the phase discriminator is further connected with reference signal；The connection of the broadband VCO and frequency divider and adjacent devices is on-fixed connection, and the replacement for carrying out homologous series can be exported according to different frequency.The utility model finally realizes universal, modularized production, improves working efficiency, reduces job costs.

Description

Universal broadband Low phase noise is mixed frequency of phase locking source

Technical field

The utility model relates to electronic circuit fields more particularly to universal broadband Low phase noise to be mixed frequency of phase locking source.

Background technique

In frequency source design, to obtain broadband, Low phase noise output signal, generally using the scheme of mixing locking phase.? In existing module design, frequency source part is always individually designed according to the requirement of complete machine progress, and circuit is fixed design, often Secondary design requires to carry out topology layout again, draws schematic diagram, draws PCB figure, performance adjustment, software optimization.This fixation is set Meter mode has the shortcomings that repetitive operation amount is big, working efficiency is low, at high cost.

Utility model content

To solve the above-mentioned problems, the utility model proposes universal broadband Low phase noises to be mixed frequency of phase locking source.This is practical It is novel by way of replaceable module, the additional different local oscillation signal locking phase after mixing can be exported and be suited the requirements Low phase noise signal.

Specifically, universal broadband Low phase noise is mixed frequency of phase locking source, comprising: phase discriminator, low-pass filter A, broadband VCO, coupler, amplifier, frequency divider, frequency mixer and low-pass filter B,

The input terminal of broadband VCO, the output of broadband VCO are connected to after the low-pass filtered device A of the output end of the phase discriminator The straight-through end of end connection coupler, the coupler is the output of frequency source signal, and coupled end is connected to frequency dividing after amplifier Device, the output end of the frequency divider are connected to frequency mixer, are connected to phase demodulation after the low-pass filtered device B of the output end of the frequency mixer The input terminal of device；The input terminal of the frequency mixer is also connected with local oscillation signal；The input terminal of the phase discriminator is further connected with reference to letter Number；Its difference from prior art is that the connection of the broadband VCO and frequency divider and adjacent devices is on-fixed connection, The replacement for carrying out homologous series can be exported according to different frequency.

Preferably, the phase discriminator model HMC704, the Amplifier Model are HMC565, the frequency mixer model HMC220。

Preferably, the interchangeable homologous series of broadband VCO include: HMC586LC4B, HMC587LC4B, HMC732LC4B, HMC588LC4BH, MC6380LC4B and HMC733LC4B.

Preferably, the interchangeable homologous series of the frequency divider include: HMC492LP3E and HMC493LP3E.

Preferably, attenuator A is also connected between the broadband VCO and coupler.

It is preferred: attenuator B is also connected between the coupler and amplifier.

It is preferred: attenuator C is also connected between the amplifier and frequency divider.

The utility model has the beneficial effects that: need of the utility model for broadband Low phase noise mixing frequency of phase locking source It wants, the wideband frequency source module of a kind of generalization, low phase noise is provided.Working frequency can cover 4-20GHz；It is miscellaneous in full frequency band It dissipates and inhibits to be greater than 70dBc；Phase noise be less than -105dBc/Hz@10kHz (20GHz), full frequency band output power not less than - 5dBm, operating voltage are+5.5V and+20V, and built-in voltage-stablizer, power consumption is less than 1.6W.The utility model finally realize it is universal, Modularized production improves working efficiency, reduces job costs.

Detailed description of the invention

Fig. 1 is the system diagram of the utility model；

Fig. 2 is the application implementation figure of the utility model.

Specific embodiment

For a clearer understanding of the technical features, objectives and effects of the utility model, now compareing Detailed description of the invention Specific embodiment of the present utility model.

As shown in Figure 1, phase discriminator uses HMC704.HMC704 is a Low phase noise, fractional frequency-division phase-locked loop chip, most High working frequency has integral mode and fractional mode up to 8GHz.VCO selects the broadband VCO series of AD company, output frequency It see the table below.Series VCO encapsulation is consistent with power supply, can be directly replaced according to different needs.

When output frequency is less than 16GHz, frequency divider uses HMC492LP3E；When output frequency is greater than 16GHz, frequency divider Using HMC493LP3E.Two kinds of frequency divider encapsulation are consistent with power supply, can directly be replaced as needed.

Table 1: module uses broadband VCO series

Table 2: module uses frequency divider series

Frequency divider model	Frequency dividing ratio	Supply voltage (V)	Packing forms
				HMC492LP3E	2	5	LP3E
HMC493LP3E	4	5	LP3E

Amplifier uses broad band amplifier HMC565, can cover required frequency.Coupler uses wideband microband coupling Clutch, the spurious signal generated for frequency divider and phase discriminator have very high isolation.

Frequency mixer uses broadband mixer HMC220；Working frequency are as follows: 5-12GHz, intermediate frequency output: DC-4GHz.

Additional Low phase noise local oscillation signal is obtained by Direct frequency synthesizer or directly by high-performance PLL integral frequency divisioil locking phase It obtains.2GHz or less intermediate-freuqncy signal is generated after mixing enters HMC704 progress phase demodulation, final output Low phase noise broadband signal.

Attached drawing 2 is briefly described below:

The utility model is realized in this way: Ka wave band Up/Down Conversion component needs 24-26GHz Low phase noise local oscillation signal, 12-13GHz signal is directly exported by being mixed locking phase using this patent module, output signal obtains 24-26GHz after frequency multiplication Signal exports two-way local oscillation signal and all the way local oscillator rectified signal after filtering-function point.

This patent module VCO exports 12-13GHz signal, 6-6.5GHz is obtained after 2 distribution, with the additional Low phase noise of 7.6GHz 1.1-1.6GHz signal is obtained after local oscillation signal mixing enters HMC704 progress phase demodulation.

The additional Low phase noise local oscillation signal of 7.6GHz is amplified through comb spectrum generator frequency multiplication to 7.6GHz post filtering by reference signal After generate.

The VCO and frequency divider configured in product is respectively HMC733LC4B and HMC492LP3E.

It should be noted that for simple description, therefore, it is stated as a systems for each embodiment of the method above-mentioned The combination of actions of column, but those skilled in the art should understand that, the application is not limited by the described action sequence, because For according to the application, certain some step be can be performed in other orders or simultaneously.Secondly, those skilled in the art also should Know, the embodiments described in the specification are all preferred embodiments, related movement and unit not necessarily this Shen It please be necessary.

In the above-described embodiments, it all emphasizes particularly on different fields to the description of each embodiment, is not described in some embodiment Part, reference can be made to the related descriptions of other embodiments.

Those of ordinary skill in the art will appreciate that realizing all or part of the process in above-described embodiment method, being can be with Relevant hardware is instructed to complete by computer program, the program can be stored in computer-readable storage medium In, the program is when being executed, it may include such as the process of the embodiment of above-mentioned each method.Wherein, the storage medium can be magnetic Dish, CD, ROM, RAM etc..

Above disclosures are merely preferred embodiments of the utility model, the utility model cannot be limited with this certainly Interest field, therefore equivalent variations made according to the claim of the utility model still fall within the scope of the utility model.

Claims

1. universal broadband Low phase noise is mixed frequency of phase locking source, comprising: phase discriminator, low-pass filter A, broadband VCO, coupler, Amplifier, frequency divider, frequency mixer and low-pass filter B,

The input terminal of broadband VCO is connected to after the low-pass filtered device A of the output end of the phase discriminator, the output end of broadband VCO connects Coupler is connect, the straight-through end of the coupler is the output of frequency source signal, and coupled end is connected to frequency divider after amplifier, institute The output end for stating frequency divider is connected to frequency mixer, is connected to phase discriminator after the low-pass filtered device B of the output end of the frequency mixer Input terminal；The input terminal of the frequency mixer is also connected with local oscillation signal；The input terminal of the phase discriminator is further connected with reference signal；Its Be characterized in that, the connections of the broadband VCO and frequency divider and adjacent devices is on-fixed connection, can be exported according to different frequency into The replacement of row homologous series.

2. universal broadband Low phase noise according to claim 1 is mixed frequency of phase locking source, which is characterized in that the phase discriminator Model HMC704, the Amplifier Model are HMC565, the frequency mixer model HMC220.

3. universal broadband Low phase noise according to claim 2 is mixed frequency of phase locking source, which is characterized in that the broadband The interchangeable homologous series of VCO include: HMC586LC4B, HMC587LC4B, HMC732LC4B, HMC588LC4BH, MC6380LC4B And HMC733LC4B.

4. universal broadband Low phase noise according to claim 3 is mixed frequency of phase locking source, which is characterized in that the frequency divider Interchangeable homologous series include: HMC492LP3E and HMC493LP3E.

5. universal broadband Low phase noise according to claim 4 is mixed frequency of phase locking source, which is characterized in that the broadband Attenuator A is also connected between VCO and coupler.

6. universal broadband Low phase noise according to claim 5 is mixed frequency of phase locking source, it is characterised in that: the coupler Attenuator B is also connected between amplifier.

7. universal broadband Low phase noise according to claim 6 is mixed frequency of phase locking source, it is characterised in that: the amplifier Attenuator C is also connected between frequency divider.