CN205377836U

CN205377836U - Frequency converter

Info

Publication number: CN205377836U
Application number: CN201521090128.8U
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 frequency converter, divide the module including radiofrequency signal input module, filter module A, enlarged decay module A, mixing module A, local oscillator module A, MCU control module and merit, the merit divides the signal input part of module to connect reference signal, and the merit divides the output of module to connect local oscillator module A and local oscillator module B, and local oscillator module A still connects mixing module A and MCU control module, and local oscillator module B still connects mixing module B and MCU control module. The utility model discloses frequency converter has low power dissipation, the advantage low, that the power swing is little, spurious suppression is high, small, the distinguishable rate of frequency conversion high, noise coefficient is low of making an uproar mutually.

Description

A kind of converter

Technical field

This utility model relates to signal processing field, specifically a kind of converter.

Background technology

Converter is the Novel variable-frequency product answered customer requirement and develop, and it is mainly system and provides frequency variation signal, is about to the radiofrequency signal received, is converted to intermediate-freuqncy signal by this product, then carries out data signal process.This product applies also for communication, electronic countermeasure, receive-transmit system isoelectronic series system.

Converter is the input of single port radiofrequency signal, (road is used for rear class Digital Signal Processing to the output of dual-port intermediate-freuqncy signal, one tunnel be used for signal detection) frequency conversion product (identical with traditional frequency conversion device), this product arbitrarily changes (namely frequency conversion stepping is up to 1Hz) in the frequency conversion stepping that is simultaneously achieved of frequency conversion, high spurious reduction, altofrequency accuracy, the breakthrough of high-output power flatness etc. (frequency conversion stepping, spurious reduction, frequency accurately, frequency conversion output flatness all relatively traditional frequency conversion device be greatly improved) critical index and lifting.

Utility model content

The purpose of this utility model is in that to provide a kind of converter, 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 converter, including radiofrequency signal input module, filtration module A, amplifies attenuation module A, frequency mixing module A, local oscillator modules A, MCU control module and merit sub-module；The signal input part of described merit sub-module connects reference signal, the outfan of merit sub-module connects local oscillator modules A and local oscillator module B, local oscillator modules A is also connected with frequency mixing module A and MCU control module, local oscillator module B is also connected with frequency mixing module B and MCU control module, MCU control module is also distributed connection and amplifies attenuation module A, amplify attenuation module B and IF switch, amplify attenuation module A and be also connected with filtration module A and frequency mixing module A, filtration module A is also connected with radiofrequency signal input module, frequency mixing module A is also connected with filtration module B, filtration module B is also connected with amplifying attenuation module B, amplify attenuation module B and be also connected with frequency mixing module B, frequency mixing module B is also connected with amplifying filtration module, amplify filtration module and be also connected with IF switch, IF switch is also connected with impedance matching output module.

As preferred version of the present utility model: the L-band IF signal frequency that described radiofrequency signal input module receives is 1200M ~ 1900M.

Compared with prior art, the beneficial effects of the utility model are: this utility model converter have low in energy consumption, make an uproar advantage low, that power swing is little, spurious reduction is high, volume is little, the distinguishable rate of frequency conversion is high, noise factor is low mutually.

Accompanying drawing explanation

Fig. 1 is the structured flowchart of converter.

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 converter, including radiofrequency signal input module, filtration module A, amplify attenuation module A, frequency mixing module A, local oscillator modules A, MCU control module and merit sub-module；The signal input part of described merit sub-module connects reference signal, the outfan of merit sub-module connects local oscillator modules A and local oscillator module B, local oscillator modules A is also connected with frequency mixing module A and MCU control module, local oscillator module B is also connected with frequency mixing module B and MCU control module, MCU control module is also distributed connection and amplifies attenuation module A, amplify attenuation module B and IF switch, amplify attenuation module A and be also connected with filtration module A and frequency mixing module A, filtration module A is also connected with radiofrequency signal input module, frequency mixing module A is also connected with filtration module B, filtration module B is also connected with amplifying attenuation module B, amplify attenuation module B and be also connected with frequency mixing module B, frequency mixing module B is also connected with amplifying filtration module, amplify filtration module and be also connected with IF switch, IF switch is also connected with impedance matching output module.

The L-band IF signal frequency that radiofrequency signal input module receives is 1200M ~ 1900M.

Operation principle of the present utility model is: converter is to be realized by double conversion, and the realization of local oscillator A and local oscillator B all have employed PLL technology and realizes.The major part of PLL technology is PFD, crystal oscillator, frequency divider, loop filter, voltage controlled oscillator control, secondary locking circuit, makes these circuit energy co-ordinations by control part, thus the local oscillation signal needed for synthesizing frequency conversion；Converter technique major part is wave filter, amplifies decay, frequency mixer etc., is realized by the mode simulated.The intermediate-freuqncy signal produced after frequency conversion is then through amplifying filtering, IF switch and impedance matching output to reach to meet the frequency conversion output that system index requires.

Converter, in the system of user, mainly as being that the L-band signal (1200M～1900M) received is downconverted to intermediate-freuqncy signal (60M～80M), plays frequency conversion effect, it is possible to the transceiver channel doing also system uses.

Claims

1. a converter, including radiofrequency signal input module, filtration module A, amplifies attenuation module A, frequency mixing module A, local oscillator modules A, MCU control module and merit sub-module；It is characterized in that, the signal input part of described merit sub-module connects reference signal, the outfan of merit sub-module connects local oscillator modules A and local oscillator module B, local oscillator modules A is also connected with frequency mixing module A and MCU control module, local oscillator module B is also connected with frequency mixing module B and MCU control module, MCU control module is also distributed connection and amplifies attenuation module A, amplify attenuation module B and IF switch, amplify attenuation module A and be also connected with filtration module A and frequency mixing module A, filtration module A is also connected with radiofrequency signal input module, frequency mixing module A is also connected with filtration module B, filtration module B is also connected with amplifying attenuation module B, amplify attenuation module B and be also connected with frequency mixing module B, frequency mixing module B is also connected with amplifying filtration module, amplify filtration module and be also connected with IF switch, IF switch is also connected with impedance matching output module.

2. according to a kind of converter described in claim 1, it is characterised in that the L-band IF signal frequency that described radiofrequency signal input module receives is 1200M ~ 1900M.