CN216122393U

CN216122393U - Receiving unit circuit for antenna control assembly

Info

Publication number: CN216122393U
Application number: CN202122711286.2U
Authority: CN
Inventors: 杜亚军
Original assignee: Chengdu Tiger Microelectronics Research Institute Co ltd
Current assignee: Chengdu Tiger Microelectronics Research Institute Co ltd
Priority date: 2021-11-08
Filing date: 2021-11-08
Publication date: 2022-03-22
Anticipated expiration: 2031-11-08

Abstract

The utility model relates to a receiving unit circuit for an antenna control assembly, which comprises a filter circuit, an amplitude limiter circuit and an amplification driving circuit; the filter circuit is connected with the amplitude limiter circuit in parallel, a radio frequency input end is connected with the filter circuit, and the amplitude limiter is connected with a radio frequency input end; a DC blocking capacitor is respectively connected between the radio frequency input end and the filter circuit, between the filter circuit and the amplitude limiter circuit and between the amplitude limiter circuit and the radio frequency output end; the amplifying driving circuit I is connected between the radio frequency input end and the filter circuit in a coupling mode, and the amplifying driving circuit and the filter circuit are both connected with a control power supply. The electromagnetic power resistance of the receiving link is improved to 5000W from the original 500W resistance, so that the performance of the high-power electromagnetic pulse power resistance of the receiving link is greatly improved; can effectively protect the rear-end device, can avoid having the big loss and leading to the big heat of product on the electric capacity.

Description

Receiving unit circuit for antenna control assembly

Technical Field

The utility model relates to the technical field of antenna control, in particular to a receiving unit circuit of an antenna control assembly.

Background

The importance of antenna control as an integral part of the antenna system, and the reception chain as a part of the antenna control components, is also self-evident; at present, the performance of resisting high-power electromagnetic pulse power of a receiving link controlled by an antenna is low, and kilowatt-level electromagnetic power resistance is difficult to realize, so how to improve the high-power electromagnetic pulse resistance of receiving connection is a problem to be considered at present.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to overcome the drawbacks of the prior art, and provides a receiving unit circuit for an antenna control module, which solves the problem of low performance of the receiving link against high-power electromagnetic pulse power.

The purpose of the utility model is realized by the following technical scheme: a receiving unit circuit for an antenna control assembly comprises a filter circuit, a limiter circuit and an amplification driving circuit; the filter circuit is connected with the amplitude limiter circuit in parallel, a radio frequency input end is connected with the filter circuit, and the amplitude limiter is connected with a radio frequency input end; a DC blocking capacitor is respectively connected between the radio frequency input end and the filter circuit, between the filter circuit and the amplitude limiter circuit and between the amplitude limiter circuit and the radio frequency output end; the amplifying driving circuit I is connected between the radio frequency input end and the filter circuit in a coupling mode, and the amplifying driving circuit and the filter circuit are both connected with a control power supply.

The filter circuit comprises inductors L1 and L2, and capacitors C4 and C5; the inductors L1 and L2 are connected in series, one end of the series inductor is connected with the amplitude limiter circuit in parallel, and the other end of the series inductor is connected with a control power supply; the capacitor C4 is connected in parallel with the inductor L1 and then grounded, and the capacitor C5 is connected in parallel with the inductor L2 and then grounded.

The limiter circuit includes limiter diodes B2, B3, B4, and B5; the amplitude limiting diodes B2, B3, B4 and B5 are connected in parallel, the input ends of the amplitude limiting diodes after being connected in parallel are respectively connected with the radio frequency input end and the radio frequency output end, and the output ends of the amplitude limiting diodes after being connected in parallel are grounded.

The radio frequency input end with be provided with blocking capacitance C1 between inductance L1, be provided with blocking capacitance C2 between inductance L1 and the limit diode B2, the radio frequency output end with be provided with blocking capacitance C3 between the limit diode B5.

The input end of the PIN diode B1 is connected with the DC blocking capacitor C1, and the other end of the PIN diode B1 is grounded; the amplifying driving circuit outputs a certain value of voltage, so that the PIN diode B1 is switched on, and at the moment, the input power is reflected to the input end, and then the rear-end device is protected.

The utility model has the following advantages: a receiving unit circuit for an antenna control assembly improves the electromagnetic resistance power of a receiving link from the original 500W resistance to 5000W, and greatly improves the performance of the high-power electromagnetic pulse resistance power of the receiving link; can effectively protect the rear-end device, can avoid having the big loss and leading to the big heat of product on the electric capacity.

Drawings

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

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the detailed description of the embodiments of the present application provided below in connection with the appended drawings is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application. The utility model is further described below with reference to the accompanying drawings.

As shown in fig. 1, the present invention specifically relates to a receiving unit circuit for an antenna control assembly, which comprises a filter circuit, a limiter circuit and an amplification driving circuit; the filter circuit is connected with the amplitude limiter circuit in parallel, a radio frequency input end is connected with the filter circuit, and the amplitude limiter is connected with a radio frequency input end; a DC blocking capacitor is respectively connected between the radio frequency input end and the filter circuit, between the filter circuit and the amplitude limiter circuit and between the amplitude limiter circuit and the radio frequency output end; the amplifying driving circuit I is connected between the radio frequency input end and the filter circuit in a coupling mode, and the amplifying driving circuit and the filter circuit are both connected with a control power supply.

Furthermore, the present invention adopts the mode of an active limiter, and the principle is to set a power value (which can be set according to actual requirements), amplify and compare the detected small signal through coupling detection, and output a certain voltage through a driver, so that the diode B1 is turned on. At the moment, the input power is reflected back to the input end, so that a rear-stage product can be effectively protected; and the ceramic substrate with high heat dissipation performance is adopted, so that overheating and burning-out can be prevented.

The capacitor C1 needs to bear the sum of the input power and the reflected power, so a large power capacity is needed, and in the radio frequency circuit, the capacitor needs to have small loss, so that the large heat of the product caused by large loss on the capacitor is avoided, so a high-Q capacitor of 500V is selected.

Also, since die B1 is subjected to large incident and reflected waves, the limiter die cannot meet the requirements, and a diode with an I-layer thickness is selected, and a PIN diode MA4P607-212 with an I-layer thickness of 127um is selected through experiments and experience.

In order to stably turn on the PIN diode B1 and prevent a later-stage product from being burnt due to unexpected pulses, a control power supply adopts bipolar filtering, so that the diode B1 can be well turned on in a set power range.

The utility model adopts amplitude limiting reception to control the received signal within 13dBm, so that the low-noise amplifier can work safely, the receiving sensitivity is high, and the selectivity is good. The output end of the low noise amplifier is a filter for filtering clutter and harmonic components, the ATF54143 of the Highua company is selected, and the noise coefficient can be below 1dB at the working frequency band.

The foregoing is illustrative of the preferred embodiments of this invention, and it is to be understood that the utility model is not limited to the precise form disclosed herein and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the concept as disclosed herein, either as described above or as apparent to those skilled in the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. A receive unit circuit for an antenna control assembly, comprising: the circuit comprises a filter circuit, an amplitude limiter circuit and an amplification driving circuit; the filter circuit is connected with the amplitude limiter circuit in parallel, a radio frequency input end is connected with the filter circuit, and the amplitude limiter is connected with a radio frequency input end; a DC blocking capacitor is respectively connected between the radio frequency input end and the filter circuit, between the filter circuit and the amplitude limiter circuit and between the amplitude limiter circuit and the radio frequency output end; the amplifying driving circuit I is connected between the radio frequency input end and the filter circuit in a coupling mode, and the amplifying driving circuit and the filter circuit are both connected with a control power supply.

2. A receiving unit circuit for an antenna control module according to claim 1, wherein: the filter circuit comprises inductors L1 and L2, and capacitors C4 and C5; the inductors L1 and L2 are connected in series, one end of the series inductor is connected with the amplitude limiter circuit in parallel, and the other end of the series inductor is connected with a control power supply; the capacitor C4 is connected in parallel with the inductor L1 and then grounded, and the capacitor C5 is connected in parallel with the inductor L2 and then grounded.

3. A receiving unit circuit for an antenna control module according to claim 2, wherein: the limiter circuit includes limiter diodes B2, B3, B4, and B5; the amplitude limiting diodes B2, B3, B4 and B5 are connected in parallel, the input ends of the amplitude limiting diodes after being connected in parallel are respectively connected with the radio frequency input end and the radio frequency output end, and the output ends of the amplitude limiting diodes after being connected in parallel are grounded.

4. A receiving unit circuit for an antenna control module according to claim 3, wherein: the radio frequency input end with be provided with blocking capacitance C1 between inductance L1, be provided with blocking capacitance C2 between inductance L1 and the limit diode B2, the radio frequency output end with be provided with blocking capacitance C3 between the limit diode B5.

5. A receiving unit circuit for an antenna control module according to claim 4, wherein: the input end of the PIN diode B1 is connected with the DC blocking capacitor C1, and the other end of the PIN diode B1 is grounded; the amplifying driving circuit outputs a certain value of voltage, so that the PIN diode B1 is switched on, and at the moment, the input power is reflected to the input end, and then the rear-end device is protected.