CN214480551U

CN214480551U - Frequency synthesis module

Info

Publication number: CN214480551U
Application number: CN202121760041.2U
Authority: CN
Inventors: 张小阳
Original assignee: CHENGDU LIANBANG MICROWAVE COMMUNICATION ENGINEERING CO LTD
Current assignee: CHENGDU LIANBANG MICROWAVE COMMUNICATION ENGINEERING CO LTD
Priority date: 2021-07-30
Filing date: 2021-07-30
Publication date: 2021-10-22
Anticipated expiration: 2031-07-30

Abstract

The utility model provides a frequency synthesis module, through adopting the frequency synthesis mode that direct analog frequency synthesis mode and direct digital frequency synthesis technique joined, guarantee that the product is good of making an uproar mutually, frequency hopping time is fast. The utility model discloses a DDS phase control technique realizes that the frequency is in the same frequency phase place when agile continuous, moreover the utility model discloses the technique of making an uproar realizes low additional phase noise doubling of frequency and low noise amplification still adopting low additional phase. The utility model discloses an output signal and control signal keep strict phase-coherent with the crystal oscillator signal on the phase place, and the utility model discloses a spare part realizes 100% localization, can accomplish the protection of forceful electric magnetic pulse.

Description

Frequency synthesis module

Technical Field

The utility model relates to the field of communication technology, especially, relate to a module is combined frequently.

Background

The frequency synthesizer module, also called frequency synthesizer, is made up of reference crystal oscillator, phase frequency detector, loop filter, voltage controlled oscillator and frequency divider, the reference frequency of the phase detector in the phase locked loop is got by crystal oscillator through M frequency division, the voltage controlled oscillator feedback signal is sent to the phase detector through the variable frequency divider and is compared the phase, the phase detector outputs the error signal and sends to the control end of the voltage controlled oscillator through the loop low-pass filter, when designing the frequency synthesizer module, except paying attention to the principle design, should also fully consider measures such as shielding, isolation, filtering and earthing of circuit and system architecture, improve the performance of the frequency synthesizer module.

However, the conventional frequency synthesizer module cannot perform frequency synthesis on analog frequency and digital frequency, and the conventional frequency synthesizer module has a slow frequency hopping time.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a frequency synthesizer module for solving the problems existing in the prior art.

In order to achieve the above and other related objects, the present invention provides a frequency synthesizing module, which comprises: the power divider comprises a first power divider, a first harmonic generator, a filter, a frequency divider, a two-out-of-one switch filtering component, a first power division amplifying component, a first four-out-of-one switch filtering component, a second power divider, a second power division amplifying component, a third four-out-of-one switch filtering component, a signal generator DDS, a second harmonic generator, a fourth four-out-of-one switch filtering component, a fifth four-out-of-one switch filtering component, a sixth four-out-of-one switch filtering component and a third power division amplifying component;

the first power divider is respectively connected with the first harmonic generator and the second harmonic generator;

the first harmonic generator is respectively connected with the filter and the first one-out-of-four switch filtering component, the filter is also connected with a frequency divider, the frequency divider is also connected with the second power divider and the one-out-of-two switch filtering component, and the one-out-of-two switch filtering component is also connected with the first power divider amplifying component;

the first one-out-of-four switch filtering component is further connected with a second one-out-of-four switch filtering component and a third one-out-of-four switch filtering component, the second one-out-of-four switch filtering component is further connected with a second power divider, and the second power divider is further connected with a second power division amplifying component;

the second harmonic generator is also connected with a signal generator DDS, and the signal generator DDS is also connected with a third one-out-of-four switch filtering component and a fourth one-out-of-four switch filtering component; the fourth one-out-of-four switch filtering component is further connected with a fifth one-out-of-four switch filtering component and a sixth one-out-of-four switch filtering component, and the sixth one-out-of-four switch filtering component is further connected with a third power division amplifying component.

Optionally, the first power divider is sequentially connected to the first harmonic generator, the filter, the frequency divider, the one-of-two switch filtering component, and the first power dividing amplifying component, and the second power divider is further connected to the one-of-two switch filtering component, so as to form a wideband local oscillation and pump frequency module.

Optionally, the first power divider is sequentially connected to the first harmonic generator, the first one-out-of-four switch filter component, the second power divider and the second power divider amplification component, and the signal generator DDS is sequentially connected to the third one-out-of-four switch filter component and the second one-out-of-four switch filter component, so as to form a first narrow-band local oscillator and pump frequency module.

Optionally, the first power divider is sequentially connected to the second harmonic generator, the fourth one-by-four switch filter assembly, the fifth one-by-four switch filter assembly, and the third power divider amplification assembly, and the signal generator DDS is sequentially connected to the fourth one-by-four switch filter assembly and the sixth one-by-four switch filter assembly, so as to form a second narrowband local oscillation and pump frequency module.

As above, the utility model provides a module is combined frequently has following beneficial effect: the utility model discloses a frequency synthesis mode that direct analog frequency synthesis mode and direct digital frequency synthesis technique joined, it is good to guarantee that the product is made an uproar mutually, and frequency hopping time is fast. The utility model discloses a DDS phase control technique realizes that the frequency is in the same frequency phase place when agile continuous, moreover the utility model discloses the technique of making an uproar realizes low additional phase noise doubling of frequency and low noise amplification still adopting low additional phase. The utility model discloses an output signal and control signal keep strict phase-coherent with the crystal oscillator signal on the phase place, and the utility model discloses a spare part realizes 100% localization, can accomplish the protection of forceful electric magnetic pulse.

Drawings

Fig. 1 is a schematic block diagram of an frequency synthesizer module according to an embodiment.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.

It should be noted that the drawings provided in the following embodiments are only for illustrating the basic concept of the present invention, and the components related to the present invention are only shown in the drawings rather than drawn according to the number, shape and size of the components in actual implementation, and the form, amount and ratio of the components in actual implementation may be changed at will, and the layout of the components may be more complicated.

Referring to fig. 1, the present invention provides a frequency synthesizer module, which includes: the power divider comprises a first power divider, a first harmonic generator, a filter, a frequency divider, a two-out-of-one switch filtering component, a first power dividing amplifying component, a first four-out-of-one switch filtering component, a second power divider, a second power dividing amplifying component, a third four-out-of-one switch filtering component, a signal generator DDS, a second harmonic generator, a fourth four-out-of-one switch filtering component, a fifth four-out-of-one switch filtering component, a sixth four-out-of-one switch filtering component and a third power dividing amplifying component.

the first harmonic generator is respectively connected with the filter and the first one-out-of-four switch filtering component, the filter is also connected with the frequency divider, the frequency divider is also connected with the first power divider and the one-out-of-two switch filtering component, and the one-out-of-two switch filtering component is also connected with the second power divider amplifying component;

the first one-out-of-four switch filtering component is also connected with a second one-out-of-four switch filtering component and a third one-out-of-four switch filtering component, the second one-out-of-four switch filtering component is also connected with a second power divider, and the second power divider is also connected with a second power division amplifying component;

the second harmonic generator is also connected with a signal generator DDS, and the signal generator DDS is also connected with a third one-out-of-four switch filtering component and a fourth one-out-of-four switch filtering component; the fourth one-out-of-four switch filtering component is further connected with the fifth one-out-of-four switch filtering component and the sixth one-out-of-four switch filtering component, and the sixth one-out-of-four switch filtering component is further connected with the third power division amplifying component.

According to the above descriptions, in an exemplary embodiment, the first power divider is sequentially connected to the first harmonic generator, the filter, the frequency divider, the one-of-two switch filtering component and the first power division amplifying component, and the second power divider is further connected to the one-of-two switch filtering component to form a wideband local oscillation and pump frequency module.

According to the above descriptions, in an exemplary embodiment, the first power divider is sequentially connected to the first harmonic generator, the first one-out-of-four switching filter assembly, the second power divider and the second power dividing amplification assembly, and the signal generator DDS is sequentially connected to the third one-out-of-four switching filter assembly and the second one-out-of-four switching filter assembly, so as to form the first narrowband local oscillation and pumping module.

According to the above description, in an exemplary embodiment, the first power divider is sequentially connected to the second harmonic generator, the fourth one-by-four switching filter module, the fifth one-by-four switching filter module and the third power dividing amplifying module, and the signal generator DDS is sequentially connected to the fourth one-by-four switching filter module and the sixth one-by-four switching filter module to form the second narrowband local oscillation and pumping module.

According to the above description, the frequency synthesizer module is composed of a first narrow-band local oscillator and pump frequency module, a second narrow-band local oscillator and pump frequency module, and a wide-band local oscillator and pump frequency module. The frequency synthesis module has the main function of providing electronic equipment with a stable high-frequency spectrum full-coherent local oscillator and a pumping frequency signal required by the electronic equipment. The working principle of the utility model is as follows, using 120MHz input signal as the clock control signal of the utility model, inputting 120MHz input signal to the duplexer, generating 1560MHz signal, inputting the generated 1560MHz signal to the first harmonic generator and the second harmonic generator; and the signal generator DDS takes the 1560MHz signal generated by the duplexer as a reference signal. The broadband local oscillator and pump frequency module can output broadband local oscillator signals within the range of 3495-3895 MHz under the input signals of 120 MHz.

The second narrow-band local oscillator and pump frequency module can output a narrow-band local oscillator signal within the range of 3195-3595 MHz under the input signal of 120 MHz. And local oscillation signals of the broadband local oscillation and pump frequency module and the second narrowband local oscillation and pump frequency module are stepped to 1 MHz.

To sum up, the utility model provides a frequency synthesis module adopts the frequency synthesis mode that direct analog frequency synthesis mode and direct digital frequency synthesis technique joined, guarantees that the product is made an uproar mutually, and frequency hopping time is fast. The utility model discloses a DDS phase control technique realizes that the frequency is in the same frequency phase place when agile continuous, moreover the utility model discloses the technique of making an uproar realizes low additional phase noise doubling of frequency and low noise amplification still adopting low additional phase. The utility model discloses an output signal and control signal keep strict phase-coherent with the crystal oscillator signal on the phase place, and the utility model discloses a spare part realizes 100% localization, can accomplish the protection of forceful electric magnetic pulse.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. A frequency synthesizer module, comprising: the power divider comprises a first power divider, a first harmonic generator, a filter, a frequency divider, a two-out-of-one switch filtering component, a first power division amplifying component, a first four-out-of-one switch filtering component, a second power divider, a second power division amplifying component, a third four-out-of-one switch filtering component, a signal generator DDS, a second harmonic generator, a fourth four-out-of-one switch filtering component, a fifth four-out-of-one switch filtering component, a sixth four-out-of-one switch filtering component and a third power division amplifying component;

2. The frequency synthesizer module of claim 1, wherein the first power divider is sequentially connected to the first harmonic generator, the filter, the frequency divider, the one-of-two switch filter module, and the first power dividing amplifier module, and the second power divider is further connected to the one-of-two switch filter module to form a wideband local oscillator and pump module.

3. The frequency synthesizer module of claim 1, wherein the first power divider is sequentially connected to the first harmonic generator, the first one-out-of-four switch filter module, the second power divider and the second power divider amplifier module, and the signal generator DDS is sequentially connected to the third one-out-of-four switch filter module and the second one-out-of-four switch filter module to form a first narrowband local oscillator and pump module.

4. The frequency synthesizer module of claim 1, wherein the first power divider is sequentially connected to the second harmonic generator, the fourth one-out-of-four switch filter module, the fifth one-out-of-four switch filter module, and the third power divider amplifier module, and the signal generator DDS is sequentially connected to the fourth one-out-of-four switch filter module and the sixth one-out-of-four switch filter module, thereby forming a second narrowband local oscillator and pump frequency module.