CN214097618U

CN214097618U - Miniaturized broadband transient measurement frequency conversion channel

Info

Publication number: CN214097618U
Application number: CN202023198261.9U
Authority: CN
Inventors: 陈德平; 刘宝成
Original assignee: Nanjing Ruide Communication Technology Co ltd
Current assignee: Nanjing Ruide Communication Technology Co ltd
Priority date: 2020-12-25
Filing date: 2020-12-25
Publication date: 2021-08-31
Anticipated expiration: 2030-12-25

Abstract

The utility model discloses a miniaturized broadband transient measurement frequency conversion channel, wherein, a radio frequency signal is input through a first signal input port or a second signal input port and is divided into two paths with a self-checking source to carry out front-end amplification and frequency measurement; the first frequency measurement channel is divided into two paths through a second power divider: one path of input signals and the input signals of the sixth signal input port pass through a first mixer and then are subjected to filtering, amplification, attenuation and re-amplification to generate transient measurement signals, and the other path of input signals and the input signals of the fifth signal input port pass through a second mixer and then are subjected to down-conversion processing to generate intermediate frequency signals; the second frequency measurement channel is divided into two paths through a third power divider: one path of input signals and the seventh signal input port pass through the third mixer, are filtered, amplified, attenuated and re-amplified to generate transient measurement signals, and the other path of input signals and the fifth input port pass through the fourth mixer and are down-converted to generate intermediate frequency signals. The utility model provides a frequency conversion passageway is surveyed instantaneously to miniaturized broadband, signal cover frequency broad has multiple regulation and control function.

Description

Miniaturized broadband transient measurement frequency conversion channel

Technical Field

The utility model belongs to the technical field of instantaneous frequency measures, concretely relates to frequency conversion passageway is surveyed instantaneously to miniaturized broadband.

Background

The existing broadband frequency conversion system is usually composed of a plurality of modules, and each module is responsible for different functions. The disadvantage of such a system is that the space utilization is not high, and it cannot be satisfied for some applications that require a strict volume. The miniaturized broadband transient frequency conversion channel is developed for the application.

Disclosure of Invention

The purpose of the invention is as follows: the utility model aims to provide a frequency conversion passageway is surveyed instantaneously to miniaturized broadband to the not enough of prior art, and the signal covers the frequency broad, has multiple regulation and control function.

The technical scheme is as follows: the utility model discloses a miniaturized broadband transient test frequency conversion channel, including first signal input port, second signal input port, self-checking source, fifth signal input port, sixth signal input port, seventh signal input port; a radio frequency signal is input through a first signal input port or a second signal input port, a self-detection source is divided into two paths through a first power divider and is respectively connected with the first signal input port and the second signal input port through a single-pole double-throw switch, the first signal input port is connected with a first front-end amplification circuit, the first front-end amplification circuit is connected with a first frequency measurement channel, the second signal input port is connected with a second front-end amplification circuit, and the second front-end amplification circuit is connected with a second frequency measurement channel; the first frequency measurement channel is divided into two paths through a second power divider: one path of input signals and the input signals of the sixth signal input port pass through a first mixer and then are subjected to filtering, amplification, attenuation and re-amplification to generate transient measurement signals, and the other path of input signals and the input signals of the fifth signal input port pass through a second mixer and then are subjected to down-conversion processing to generate intermediate frequency signals; the second frequency measurement channel is divided into two paths through a third power divider: one path of input signals and the seventh signal input port pass through the third mixer, are filtered, amplified, attenuated and re-amplified to generate transient measurement signals, and the other path of input signals and the fifth input port pass through the fourth mixer and are down-converted to generate intermediate frequency signals.

Furthermore, the input signal of the first signal input port is 18-26.5 GHz, -60 dBm-0 dBm, and the input signal of the second signal input port is 26.5-40 GHz, -60 dBm-0 dBm.

Furthermore, the first signal input port and the second signal input port are both connected with limiters.

Further, the first front-end amplifying circuit comprises two single-pole double-throw switches, a filter connected between the single-pole double-throw switches and a direct-connection path.

Further, the input signal of the fifth signal input port is 9.4-18.8 GHz, +4dBm, and the input signal is divided into four paths by the single-pole four-throw switch: the first path of signal is output to the second mixer after frequency doubling and filtering, the second path of signal and the third path of signal are output to the single-pole three-throw switch after frequency doubling, filtering and ATT attenuation respectively and the fourth path of signal after amplification and filtering, and the output signal of the single-pole three-throw switch is output to the fourth mixer after amplification and ATT attenuation.

Further, the input signal of the sixth signal input port is 14.5GHz, +4dBm, and the input signal is subjected to frequency doubling and filtering and is output to the first mixer; the input signal of the seventh signal input port is 21GHz and +4dBm, and the input signal is output to the third mixer after frequency doubling, filtering, ATT attenuation, amplification and ATT attenuation.

Has the advantages that: compared with the prior art, the utility model has the advantages of: the utility model provides a miniaturized broadband transient measurement frequency conversion channel, the working frequency range is 18-40GHz, and the signal coverage frequency is wider; the instantaneous measurement frequency conversion channel integrates a plurality of functions such as front-end amplification, down conversion, instantaneous measurement pilot frequency, local oscillator switching, self-checking and the like, and has small volume and compact structure; meanwhile, the index requirements of low stray, large dynamic, fast response and the like are met.

Drawings

Fig. 1 is a schematic diagram of the circuit structure of the present invention.

Detailed Description

The technical solution of the present invention is described in detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the embodiments.

As shown in fig. 1, the utility model provides a miniaturized broadband transient test frequency conversion channel, including first signal input port XS1, second signal input port XS2, self-checking source, fifth signal input port XS5, sixth signal input port XS6, seventh signal input port XS 7.

The 18-40GHz radio frequency signals are input through the first signal input port or the second signal input port, the first signal input port is connected with the first amplitude limiter, the second signal input port is connected with the second amplitude limiter, the input signals of the first signal input port are 18-26.5 GHz, -60 dBm-0 dBm, and the input signals of the second signal input port are 26.5-40 GHz, -60 dBm-0 dBm. The self-detection source is divided into two paths through the first power divider: one path is connected with the first amplitude limiter through the single-pole double-throw switch and the first front-end amplifying circuit, the other path is connected with the second amplitude limiter through the single-pole double-throw switch and the second front-end amplifying circuit, the first front-end amplifying circuit is provided with two single-pole double-throw switches, an amplifier and a direct connection path which are connected between the single-pole double-throw switches in parallel, and the second front-end amplifying circuit is provided with two single-pole three-throw switches, two amplifiers and a direct connection path which are connected between the single-pole three-throw switches in parallel.

The output end of the first front-end amplifying circuit is sequentially connected with a filter, an attenuator, a switch and a second power divider, and the second power divider is divided into two paths: the two paths are respectively connected with a first mixer and a second mixer after being amplified and ATT attenuated. The output end of the second front-end amplifying circuit is sequentially connected with an attenuator, a switch, an ATT attenuator and a third power divider, and the third power divider is divided into two paths: the two paths are respectively connected with a third mixer and a fourth mixer after being amplified and ATT attenuated.

The input signal of the sixth signal input port is 14.5GHz, +4dBm, and the input signal is subjected to frequency doubling and filtering and is output to the first mixer. The input signal of the fifth signal input port is 9.4-18.8 GHz and +4dBm, and the input signal is divided into four paths through the single-pole four-throw switch: the first path of 14.35-18.8 GHz signals are subjected to frequency doubling and filtering and then output to a second mixer, the second path of 9.4-12 GHz signals and the third path of 12-14.65 GHz signals are subjected to frequency doubling, filtering and ATT attenuation respectively and then output to a single-pole three-throw switch together with the fourth path of 15.8-18.8 GHz signals subjected to amplification and filtering, and the output signals of the single-pole three-throw switch are amplified and ATT attenuated and then output to a fourth mixer. The input signal of the seventh signal input port is 21GHz, +4dBm, and the input signal is output to the third mixer after frequency doubling, filtering, ATT attenuation, amplification and ATT attenuation.

The output signal of the first mixer is filtered, amplified, attenuated and amplified again to generate a 2.5-11 GHz instantaneous measurement signal, and the output signal of the second mixer is filtered and amplified to generate a 10.2-11.2 GHz intermediate frequency signal; the third mixer outputs a signal, and then the signal is filtered, amplified, attenuated and re-amplified to generate a 2-15.5 GHz transient measurement signal; and filtering and amplifying the output signal of the fourth mixer to generate a 10.2-11.2 GHz intermediate frequency signal.

The 18-40GHz radio frequency signals enter a frequency measurement channel through an input port XS1 or XS2 and are mixed with a frequency measurement local oscillator, then the signals are sent to a single-bit receiver, and the single-bit receiver converts the received signals into frequency codes and then sends the frequency codes to an upper computer. And the upper computer sends the local oscillation control code of the corresponding channel according to the frequency code, so that the local oscillation of the channel is quickly switched to the corresponding working frequency.

As above, while the invention has been shown and described with reference to certain preferred embodiments, it is not to be construed as limiting the invention itself. Various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A miniaturized broadband transient measurement frequency conversion channel is characterized in that: the self-checking device comprises a first signal input port, a second signal input port, a self-checking source, a fifth signal input port, a sixth signal input port and a seventh signal input port; a radio frequency signal is input through a first signal input port or a second signal input port, a self-detection source is divided into two paths through a first power divider and is respectively connected with the first signal input port and the second signal input port through a single-pole double-throw switch, the first signal input port is connected with a first front-end amplification circuit, the first front-end amplification circuit is connected with a first frequency measurement channel, the second signal input port is connected with a second front-end amplification circuit, and the second front-end amplification circuit is connected with a second frequency measurement channel; the first frequency measurement channel is divided into two paths through a second power divider: one path of input signals and the input signals of the sixth signal input port pass through a first mixer and then are subjected to filtering, amplification, attenuation and re-amplification to generate transient measurement signals, and the other path of input signals and the input signals of the fifth signal input port pass through a second mixer and then are subjected to down-conversion processing to generate intermediate frequency signals; the second frequency measurement channel is divided into two paths through a third power divider: one path of input signals and the seventh signal input port pass through the third mixer, are filtered, amplified, attenuated and re-amplified to generate transient measurement signals, and the other path of input signals and the fifth input port pass through the fourth mixer and are down-converted to generate intermediate frequency signals.

2. The miniaturized broadband transient frequency conversion channel of claim 1, wherein: the input signal of the first signal input port is 18-26.5 GHz, -60 dBm-0 dBm, and the input signal of the second signal input port is 26.5-40 GHz, -60 dBm-0 dBm.

3. The miniaturized broadband transient frequency conversion channel of claim 2, wherein: the first signal input port and the second signal input port are both connected with amplitude limiters.

4. The miniaturized broadband transient frequency conversion channel of claim 1, wherein: the first front-end amplifying circuit comprises two single-pole double-throw switches, a filter connected between the single-pole double-throw switches and a direct connection path.

5. The miniaturized broadband transient frequency conversion channel of claim 1, wherein: the input signal of the fifth signal input port is 9.4-18.8 GHz and +4dBm, and the input signal is divided into four paths through the single-pole four-throw switch: the first path of signal is output to the second mixer after frequency doubling and filtering, the second path of signal and the third path of signal are output to the single-pole three-throw switch after frequency doubling, filtering and ATT attenuation respectively and the fourth path of signal after amplification and filtering, and the output signal of the single-pole three-throw switch is output to the fourth mixer after amplification and ATT attenuation.

6. The miniaturized broadband transient frequency conversion channel of claim 1, wherein: the input signal of the sixth signal input port is 14.5GHz and +4dBm, and the input signal is subjected to frequency doubling and filtering and is output to the first mixer; the input signal of the seventh signal input port is 21GHz and +4dBm, and the input signal is output to the third mixer after frequency doubling, filtering, ATT attenuation, amplification and ATT attenuation.