CN215498936U

CN215498936U - Frequency conversion receiving device

Info

Publication number: CN215498936U
Application number: CN202121805789.XU
Authority: CN
Inventors: 陈大龙; 王亮
Original assignee: Nanjing Maiqiang Electronic Technology Co ltd
Current assignee: Nanjing Maiqiang Electronic Technology Co ltd
Priority date: 2021-08-04
Filing date: 2021-08-04
Publication date: 2022-01-11
Anticipated expiration: 2031-08-04

Abstract

The utility model provides a variable frequency receiving device, which comprises a shell, wherein four radio frequency input ports are arranged on the shell; each path of radio frequency signal and the calibration signal are synthesized into a path of signal through a single-pole double-throw switch, the signal is amplified by an amplifier, enters a left attenuation amplifier group through a left switch filter group, then enters a left mixer to be mixed with a path of first local oscillator signal, then the mixed signal is mixed with a path of second local oscillator A or a path of second local oscillator B signal through a right mixer through a filter, enters a right switch filter group through a right amplification attenuator group, is amplified by an amplifying circuit, and then is output through an output port of one path through an output circuit; by arranging the multi-channel frequency conversion circuit, the problem that the existing frequency conversion receiving equipment is suitable for application scenes with a large number of channels, complex functions and high integration level is solved.

Description

Frequency conversion receiving device

Technical Field

The present invention relates to a receiving device, and more particularly, to a variable frequency receiving device.

Background

The frequency conversion receiving device is used as an important component of equipment such as radar, communication, navigation and the like, and has the main functions of amplifying, frequency converting, filtering and AGC (automatic gain control) input broadband radio frequency signals, outputting intermediate frequency signals with lower frequency and narrower bandwidth, and sending the intermediate frequency signals to an AD (analog-to-digital) converter for sampling. Each functional module of the traditional frequency conversion receiving device generally adopts a microwave monolithic circuit or a hybrid integrated module, and has single function; anti-aliasing filters typically employ an LC filter module consisting of discrete components inside. The traditional variable frequency receiving device is large in size and cannot adapt to application scenes with a large number of channels, complex functions and high integration level.

SUMMERY OF THE UTILITY MODEL

The utility model provides a variable frequency receiving device, which solves the problems that each functional module of the existing variable frequency receiving device generally adopts a microwave monolithic circuit or a hybrid integrated module, and has single function; anti-aliasing filters typically employ an LC filter module consisting of discrete components inside. The traditional variable frequency receiving device is large in size and cannot adapt to application scenes with a large number of channels, complex functions and high integration level.

In order to solve the technical problems, the utility model provides the following technical scheme:

the utility model provides a frequency conversion receiving device, which comprises a shell, wherein the shell is provided with four paths of radio frequency input ports, a calibration input port, a first local oscillator input port, a second local oscillator A input port, a second local oscillator B input port, four paths of output ports, a telecommunication power interface and a telecommunication control interface; each path of radio frequency signal and the calibration signal are synthesized into a path of signal through a single-pole double-throw switch, and the signal enters a left attenuation amplifier group through a left switch filter group after being amplified by an amplifier, then enters a left mixer to be mixed with a path of first local oscillator signal, then the mixed signal passes through a filter, is mixed with a path of second local oscillator A or a path of second local oscillator B signal through a right mixer, enters a right switch filter group through a right amplification attenuator group, then is amplified by an amplifying circuit, and then is output through an output port of the path through an output circuit.

Preferably, the power dividing circuit includes a filter, the filter divides power through the power divider and outputs through the amplifier, the left attenuation amplifier group includes a 4Bit numerical control attenuator and outputs through the LNA, and the right attenuation amplifier group includes an amplifier and outputs through the 4Bit numerical control attenuator.

Preferably, the left switch filter bank comprises a two-stage single-pole six-throw switch and six filters, the signal is output by 6 paths through the single-pole four-throw switch, is divided into 6 sections of frequency through the 6 filters, and is output as a 1-path signal through the single-pole six-throw switch, the right switch filter bank comprises a two-stage single-pole two-throw switch and six filters, the signal is output by 2 paths through the single-pole two-throw switch, is divided into 2 sections of frequency through the 2 filters, and is output as a 1-path signal through the single-pole two-throw switch.

Preferably, the amplifying circuit comprises three amplifiers, an adjustable temperature compensation resistor is arranged between the amplifiers, the output circuit comprises a filter and a coupler, and the output circuit is output by the coupler.

Preferably, the housing is provided with a first path of monitoring port, the first path of monitoring port is connected with a coupler of one output circuit, and couplers of the other output circuits are connected with a grounding circuit.

Preferably, the telecommunication power interface and the telecommunication control interface are respectively connected by J30J-31ZKP and J30J-25ZKP type electric appliances.

Through the technical scheme, the utility model has the beneficial effects that: by arranging the multi-channel frequency conversion circuit, the problem that the existing frequency conversion receiving equipment is suitable for application scenes with a large number of channels, complex functions and high integration level is solved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic diagram of the circuit of the present invention.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.

According to the frequency conversion receiving device shown in the figure, the frequency conversion receiving device comprises a shell, wherein four paths of radio frequency input ports 6, a calibration input port 7, a first local oscillator input port 3, a second local oscillator A input port 4, a second local oscillator B input port 5, four paths of output ports 1, a telecommunication power supply interface 9 and a telecommunication control interface 10 are arranged on the shell, the calibration input port 7 is divided into four paths through a power dividing circuit, the first local oscillator input port 3 is divided into four paths through the power dividing circuit, and the second local oscillator A input port 4 and the second local oscillator B input port 5 are divided into two paths through the power dividing circuit; each path of radio frequency signal and a calibration signal are synthesized into a path of signal through a single-pole double-throw switch, the signal is amplified by an amplifier, enters a left attenuation amplifier group through a left switch filter group, then enters a left mixer to be mixed with a path of first local oscillator signal, then the mixed signal passes through a filter, is mixed with a path of second local oscillator A or a path of second local oscillator B signal through a right mixer, enters a right switch filter group through a right amplification attenuator group, is amplified by an amplifying circuit and then is output through an output port through an output circuit, the power dividing circuit comprises a filter, the filter performs power division through a power divider and outputs through the amplifier, the left attenuation amplifier group comprises a 4Bit numerical control attenuator and outputs through an LNA, the right amplification attenuator group comprises an amplifier and outputs through the 4Bit numerical control attenuator, the left switch filter group comprises a two-stage single-pole six-throw switch and six filters, the signal is output by 6 paths through the single-pole four-throw switch, then is divided into 6 sections of frequency through the 6 filters, and then is combined into 1 path of signal output through the single-pole six-throw switch, the right switch filter group comprises a two-stage single-pole two-throw switch and six filters, the signal is output by 2 paths through the single-pole two-throw switch, then is divided into 2 sections of frequency through 2 filters, and then is combined into 1 path of signal output through the single-pole two-throw switch, the amplifying circuit comprises three amplifiers, an adjustable temperature compensation resistor is arranged between the amplifiers, the output circuit comprises a filter and a coupler, the output circuit is output by the coupler, a first path of monitoring port 5 is arranged on the shell, the first path of monitoring port 5 is connected with the coupler of one path of output circuit, and the couplers of the other output circuits are connected with a grounding circuit, the telecommunication power interface 9 and the telecommunication control interface 40 are respectively connected by J30J-31ZKP and J30J-25ZKP type electrical appliances.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the utility model.

Claims

1. A frequency conversion receiving arrangement, includes the shell, its characterized in that: the shell is provided with four paths of radio frequency input ports, a calibration input port, a first local oscillator input port, a second local oscillator A input port, a second local oscillator B input port, four paths of output ports, a telecommunication power supply interface and a telecommunication control interface, wherein the calibration input port is divided into four paths through a power dividing circuit, the first local oscillator input port is divided into four paths through the power dividing circuit, and the second local oscillator A input port and the second local oscillator B input port are divided into two paths through the power dividing circuit; each path of radio frequency signal and the calibration signal are synthesized into a path of signal through a single-pole double-throw switch, and the signal enters a left attenuation amplifier group through a left switch filter group after being amplified by an amplifier, then enters a left mixer to be mixed with a path of first local oscillator signal, then the mixed signal passes through a filter, is mixed with a path of second local oscillator A or a path of second local oscillator B signal through a right mixer, enters a right switch filter group through a right amplification attenuator group, then is amplified by an amplifying circuit, and then is output through an output port of the path through an output circuit.

2. The apparatus according to claim 1, wherein: the power division circuit comprises a filter, the filter performs power division through a power divider and outputs through an amplifier, the left attenuation amplifier group comprises a 4-Bit numerical control attenuator and outputs through an LNA, and the right amplification attenuator group comprises an amplifier and outputs through the 4-Bit numerical control attenuator.

3. The variable frequency receiving device according to claim 1 or 2, wherein: the left switch filter bank comprises a two-stage single-pole six-throw switch and six filters, the signals are output in 6 paths through the single-pole four-throw switch, are divided into 6 sections of frequencies through the 6 filters, are combined into 1 path of signal output through the single-pole six-throw switch, the right switch filter bank comprises a two-stage single-pole two-throw switch and six filters, the signals are output in 2 paths through the single-pole two-throw switch, are divided into 2 sections of frequencies through the 2 filters, and are combined into 1 path of signal output through the single-pole two-throw switch.

4. A variable frequency receiving apparatus according to claim 3, wherein: the amplifying circuit comprises three amplifiers, an adjustable temperature compensation resistor is arranged between the amplifiers, the output circuit comprises a filter and a coupler, and the output circuit is output by the coupler.

5. The apparatus according to claim 4, wherein: the shell is provided with a first path of monitoring port, the first path of monitoring port is connected with a coupler of one path of output circuit, and couplers of the other output circuits are connected with a grounding circuit.

6. The apparatus according to claim 1, wherein: the telecommunication power interface and the telecommunication control interface are respectively connected by J30J-31ZKP and J30J-25ZKP type electrical appliances.