CN2294527Y

CN2294527Y - Antenna polarization control network

Info

Publication number: CN2294527Y
Application number: CN 96244464
Authority: CN
Inventors: 赵霖
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-12-12
Filing date: 1996-12-12
Publication date: 1998-10-14
Anticipated expiration: 2006-12-12

Abstract

The utility model discloses an antenna polarization control network, belong to antenna technical field. The antenna solves the problem of 3 dB polarization mismatch loss of the domestic known antenna equipment in processing electromagnetic signals with various polarizations, so that two antenna systems which are crossed at 90 degrees and coaxially configured can process horizontal and vertical linear polarization, left-hand and right-hand circularly polarized electromagnetic signals with polarization loss. The utility model is mainly technically characterized in that five single-pole double-throw switches S are adopted₁～S₅A 3 db quadrature coupler C and a method of feeder connection between components. The antenna has the advantages of small volume, compact structure and small insertion loss, and can be directly arranged at an antenna input port. The utility model discloses radio communication and direction finding, electromagnetic environment monitoring to and electronic countermeasure and opposition have extensive use value in resisting.

Description

The antenna polarization Control Network

The utility model belongs to antenna technical field.

The antenna system that the purpose of this utility model is to make two orthogonal antennas to form can be carried out level, vertical line polarization on request, the quick conversion between left-handed, the right-handed circular polarization.At present, domestic known antenna equipment mostly adopts 45 ° of inclined polarization modes or circular polarization mode when handling multiple polarity electromagnetic signal.Unfortunately all there are 3 decibels of polarization mismatch loss problems in they.Though the circular polarization mode can be to the circularly polarized signal of identical rotation direction coupling, to derotation to the then complete mismatch of circularly polarized signal.And the antenna system that the utility model utilizes two orthogonal antennas to form can not have the multiple polarity electromagnetic signal of processing of polarization loss, can realize quick conversion between the multiple polarization by remote control simultaneously.This utility model compact conformation, volume be little, it is little to insert loss, can directly be contained in the antenna output end mouth.In the work, stable and reliable for performance.

This utility model is applicable to the antenna of all kinds square crossing, and it has the ultrabroad band performance, is the device that has important use value during direction-finding station and electromagnetic environment monitor and even electronic countermeasures and opposition resist.It can be applied in emission or the receiving system.

In the logarithm periodic antenna system that is applied to 90 ° of intersections, coaxial configuration of this utility model success, and one nine nine six year July eight Nikkei China National Defence Science Technology Information Centre look into new proof ＂ and belong to leading domestic.＂＂ the research achievement has novelty at home.＂

This utility model contains five single-pole double throw coaxial switches, 3 decibels of orthocouplers and some interconnection rigid coaxial cables.2,3 contacts of each coaxial switch S link to each other with contact 1 respectively by remote control command.In the antenna system of square crossing, coaxial configuration, producing circular polarization needs two amplitudes to equate that the signal voltage that phase difference is 90 ° is controlled two antennas of square crossing respectively, and 3 decibels of orthocoupler C can realize this requirement.It is 8.34 decibels of networks that asymmetric coupler constitutes that are connected in series by two, and signal voltage is at port a and b, is mutual decoupling between c and the d, and port c and d are that constant power distributes and has 90 ° of phase differences with respect to port a or b.When signal voltage was imported by a port, d port output voltage phase lag was in 90 ° of c ports; When signal voltage was imported by the b port, the output of c port lagged behind 90 ° of d ports.

Method of attachment between antenna and each component port as shown in Figure 1.Antenna H is through feeder line L _HLink coaxial switch S ₄1 port, S ₄3 ports link the c port of coupler C, S ₄2 ports link coaxial switch S ₂2 ports.Antenna V is through feeder line L _vLink coaxial switch S ₃1 port, S ₃3 ports link the d port of coupler C, S ₃2 ports link S ₂3 ports, S ₂1 port link S ₁3 ports.The a of coupler C, b port are linked coaxial switch S respectively ₅2,3 ports, S ₅1 port link S ₁2 ports, coaxial switch S ₁1 port link the output port ANT of network.

When the polarization Control Network was in configuration shown in Figure 1, antenna was horizontal polarization.This moment, output port ANT was via coaxial switch S ₁Contact 1-3, S ₂Contact 1-2, S ₄Contact 2-1 be connected to horizontally-polarized antenna H.And vertical polarized antenna V is with S ₃The connecting point position difference ends at coaxial switch S ₃Or S ₅, do not participate in work.When the polarization Control Network was in configuration shown in Figure 2, antenna was perpendicular polarization.This moment, output port ANT was via coaxial switch S ₁Contact 1-3, S ₂Contact 1-3, S ₃Contact 2-1 be connected to vertical polarized antenna V.And horizontally-polarized antenna H, with coaxial switch S ₄The connecting point position difference ends at coaxial switch S ₄Or S ₅, do not participate in work.When these two kinds of configurations, coaxial switch S ₅With 3 decibels of orthocoupler C be inoperative.

When the polarization Control Network was in configuration shown in Figure 3, antenna was left-hand circular polarization.This moment, output port ANT was through coaxial switch S ₁Contact 1-2, S ₅The input port a of contact 1-2, coupler C be assigned to its output port c, d, the signal voltage constant amplitude of this two-port and d port phase lag are in 90 ° in c port phase place.C, d two-port voltage are respectively through coaxial switch S ₄Contact 3-1, S ₃Contact 3-1 arrive horizontally-polarized antenna H and vertical polarized antenna V, make antenna have the left-hand circular polarization characteristic.When configuration shown in Figure 4, signal voltage is because of S ₅Switching from the input of the b port of coupler C, thereby make c port phase lag in 90 ° in d port phase place, make antenna have the right-handed circular polarization characteristic.Mark ＂  ＂ among Fig. 3, Fig. 4 represents that the electromagnetic signal propagation direction is by in the outer sensing book.

Claims

1. one by single-pole double-throw switch (SPDT), the antenna polarization Control Network that directional coupler is formed, and it is characterised in that network has a coaxial output line mouth, two coaxle input end mouths, two switch (S in the circuit ₃, S ₄) be connected switch (S respectively with two input ports ₁) be connected switch (S with the coaxial output line mouth ₂) be connected two input port switch (S ₃, S ₄) and output port switch (S ₁) between, finish level, perpendicular polarization translation function, switch (S ₅) be connected directional coupler (C) and output port switch (S ₁) between, finish left-handed, right-handed circular polarization translation function, directional coupler (C) is positioned at input port switch (S ₃, S ₄) and switch (S ₅) between.

2. antenna polarization Control Network according to claim 1, its characteristic is single-pole double-throw switch (SPDT) S _i(i=1,2 ... 5) be to have a single channel input, the switch that two-way can automatically controlled gating.

3. antenna polarization Control Network according to claim 1, it is characterized in that directional coupler C has input port c, the d of two mutual decouplings, output port a, the b of two mutual decouplings, the signal voltage of a and b, c and d end is a constant amplitude, and 90 ° of phase differences.