CN2310392Y - Electromagnet wave transmission convertor with high partial polarization resistance - Google Patents

Abstract

The utility model relates to an electromagnetic wave transmission switching device with high partial polarization resistance. The utility model comprises a circular and an oblong waveguide pipes, a polarizer and a positioning plane of a printed circuit board, wherein the front opening of the circular waveguide pipe is connected with an angle feedback device in the shape of surrounding in multilayer and bulging from inside to outside; the inner part of the circular waveguide pipe is orderly provided with the polarizer, a first probe, a metal block and a conductive back plane on which the square opening is arranged, and the oblong waveguide pipe and the circular waveguide pipe are connected together. The first probe is arranged in the front of the conductive back plane, and forms an angle of 45 DEG with the polarizer. A second probe and a closed end face used as the conductive back plane are arranged in the oblong waveguide pipe; the second probe is vertical to the first probe, and forms an angle of 45 DEG with the polarizer. The positioning plane of the printed circuit board of the device can deal with the signals of both probes, and is cooperated with the transmission switching device. The utility model has high product quality and low product producing cost.

Description

The electromagnetic transmission conversion equipment of high polarization barrier

The utility model relates to a kind of electromagnetic transmission conversion equipment of high polarization barrier, is meant that especially a kind of electromagnetic transmission device that uses can reach high-quality and geometry that reduce cost.

In recent years, because popularizing of U.S.'s live telecast (Direct TX), the occupation rate of electromagnetic wave conversion equipment on market also increases fast, general bipolarity electromagnetic transmission conversion equipment, barrier is on duty mutually, and the electromagnetic transmission conversion equipment on the market, the polarization barrier property of some product is barely satisfactory, and in the electromagnetic transmission conversion equipment of higher polarization barrier, much be to reach simultaneously with certain metal column to use two probes that isolation far away can be arranged, and can be connected to the purpose of a slice simply with the perpendicular printed circuit board (PCB) of the waveguide pipe of introducing signal.But this metal column that utilizes is installed in the high polarization barrier electromagnetic transmission conversion equipment, and cost is increased.

The purpose of this utility model provides and a kind ofly both can keep high-quality, the electromagnetic transmission conversion equipment that can reduce production costs again.

The utility model is achieved in that the storing plane that includes circular waveguide, rectangle waveguide pipe, polarizer and printed circuit board (PCB), it is characterized in that: wherein the front openings of circular waveguide is connected to a feedback hornwork, the feedback hornwork be multilayer around and standing shape from inside to outside, inside is sequentially provided with polarizer, first probe, metal derby and is provided with the conduction tool back plane of square aperture, wherein first probe is arranged at conduction tool back plane the place ahead, its distance is then relevant with size, the shape of metal derby, and becomes miter angle with polarizer; Wherein the rectangle waveguide pipe is connected in the square aperture of conduction tool back plane, and there is an opening in its place ahead, in second probe is arranged and as the Closed End of conduction tool back plane, second probe is perpendicular to first probe, and becomes miter angle with polarizer; Wherein printed circuit board (PCB) storing plane then is that it can handle two signals from the plane that two probe signals extract; Take this appropriate combination of geometry and size, can reach high-quality and purpose low-cost production.

Wherein the actual range of first probe and conduction tool back plane is approximately between 3 λ _g ^(C)/ 8 and 3 λ _g ^(C)Between/8, λ _g ^(λ)Decide according to required frequency band; And in circular waveguide if no metal derby, this first probe with conduct electricity the distance of tool back plane and be about λ _g ^(C)/ 4.

Wherein second probe is about λ with the distance of conduction tool back plane _g ^(r)/ 4,

Wherein ${\mathrm{\λ}}_g^{\left(r\right)}=\mathrm{\λ}/\sqrt{1-{\mathrm{\λ}}^2/{\mathrm{\λ}}^2\mathrm{cr}}$ Wavelength for square waveguide pipe; λ _Cr=2a is its cut-off wavelength, and a is the width edge length in rectangle waveguide pipe cross section.

Wherein polarizer size, size, shape and material can be selected according to required frequency band.

When wherein polarizer reception signal was the linear polarization signal, such polarizer can take out of service.

The utility model includes the storing plane of circular waveguide, rectangle waveguide pipe, polarizer and printed circuit board (PCB), wherein the front openings of circular waveguide is connected to a feedback hornwork, the feedback hornwork be multilayer around and standing shape from inside to outside, inside is sequentially provided with polarizer, first probe, metal derby and is provided with the conduction tool back plane of square aperture, so that connecing with circular waveguide, the rectangle waveguide pipe is located at, first probe is arranged at conduction tool back plane the place ahead, distance is then relevant with size, the shape of metal derby, and becomes miter angle with polarizer; Wherein the rectangle waveguide pipe is connected in the square aperture of conduction tool back plane, and there is an opening in its place ahead, in second probe is arranged and as the Closed End of conduction tool back plane, second probe is perpendicular to first probe, and becomes miter angle with polarizer.Its geometry of nationality makes printed circuit board (PCB) put the signal that two probes can be handled in the plane, and cooperates the transmission conversion equipment, reaches the goal of the invention of product high-quality and low production cost.

Fig. 1 is a stereogram of the present utility model.

Fig. 2 is a cutaway view of the present utility model.

Fig. 3 is another cutaway view of the present utility model.

Fig. 4 is a front view of the present utility model.

Referring to Fig. 1～Fig. 4, the utility model includes circular waveguide 10, rectangle waveguide pipe 20, the storing plane 40 of polarizer 30 and printed circuit board (PCB), wherein the front openings of circular waveguide 10 is connected to a feedback hornwork 14, feedback hornwork 14 be multilayer around and standing shape from inside to outside, to reduce the noise that feedback hornwork 14 comes from the rear, circular waveguide 10 inside are sequentially provided with polarizer 30, first probe 11, metal derby 13 and one which is provided with the conduction tool back plane 12 of square aperture 121, so that can cooperating its size to connect, rectangle waveguide pipe 20 is located at together, the tool back plane 12 that wherein conducts electricity has the function of strengthening first probe, 11 receiving efficiency with metal derby 13, and its voltage standing wave(VSW) sheet was approached 1: 1, wherein first probe 11 is arranged at conduction tool back plane 12 the place aheads, its distance then with the size of metal derby 13, shape is relevant, and becomes miter angle with polarizer; Wherein the actual range of first probe 11 and conduction tool back plane 12 is approximately between 3 λ _g ^(C)/ 8 and 3 λ _g ^(C)Between/8, λ _g ^(λ)Decide according to required frequency band; And in circular waveguide if no metal derby, this first probe with conduct electricity the distance of tool back plane and be about λ _g ^(C)/ 4.Near adjacent openings 121, can not be applicable to the simple formula of circular waveguide 10, promptly ${\mathrm{\λ}}_g^{\left(c\right)}=\mathrm{\λ}/\sqrt{1-{\mathrm{\λ}}^2/{\mathrm{\λ}}^2\mathrm{cc}}.$ λ wherein _Cc=3.412r is the cut-off wavelength of circular waveguide 10, and r is the inside radius of waveguide pipe 10.

There is an opening 121 in rectangle waveguide pipe 20 the place aheads, in have second probe 21 and as the conduction tool back plane 22 Closed End, the tool back plane 22 that wherein conducts electricity has the function of strengthening second probe, 21 receiving efficiency, and make its voltage standing wave ratio near 1: 1 with metal derby 13, second probe 21 is perpendicular to first probe 11, receive the polarization signal vertical, and become miter angle with polarizer with first probe 11.Second probe 21 is about λ with the distance of conduction tool back plane 22 _g ^(C)/ 4, wherein ${\mathrm{\λ}}_g^{\left(r\right)}=\mathrm{\λ}/\sqrt{1-{\mathrm{\λ}}^2/{\mathrm{\λ}}^2\mathrm{cr}}$ Wavelength for square waveguide pipe 20; λ _Cr=2a is its cut-off wavelength, and a is the width edge length in rectangle waveguide pipe cross section.

The size of polarizer 30, shape and material can be selected decision according to required frequency band, only need meet function for its kind, also can use other polarizers, and when being the linear polarization signal as received signal, this type of polarizer can take out of service.

It is the plane that two probes, 11,21 signals extract that printed circuit board (PCB) is put plane 40, can handle two signals at this single plane, and cooperate high polarization barrier electromagnetic transmission conversion equipment, can reach high-quality and purpose low production cost.

Claims (5)

1, a kind of electromagnetic transmission conversion equipment of high polarization barrier, include the storing plane of circular waveguide, rectangle waveguide pipe, polarizer and printed circuit board (PCB), it is characterized in that: wherein the front openings of circular waveguide is connected to a feedback hornwork, the feedback hornwork be multilayer around and standing shape from inside to outside, inside is sequentially provided with polarizer, first probe, metal derby and is provided with the conduction tool back plane of square aperture, wherein first probe is arranged at conduction tool back plane the place ahead, its distance is then relevant with size, the shape of metal derby, and becomes miter angle with polarizer; Wherein the rectangle waveguide pipe is connected in the square aperture of conduction tool back plane, and there is an opening in its place ahead, in second probe is arranged and as the Closed End of conduction tool back plane, second probe is perpendicular to first probe, and becomes miter angle with polarizer; Wherein printed circuit board (PCB) storing plane then is the plane from two probe signals extract.

2, the electromagnetic transmission conversion equipment of high polarization barrier as claimed in claim 1 is characterized in that: wherein the actual range of first probe and conduction tool back plane is approximately between 3 λ _g ^(C)/ 8 and 3 λ _g ^(C)Between/8, λ _g ^(λ)Decide according to required frequency band; And in circular waveguide if no metal derby, this first probe with conduct electricity the distance of tool back plane and be about λ _g ^(C)/ 4.

3, the electromagnetic transmission conversion equipment of high polarization barrier as claimed in claim 1 is characterized in that: wherein second probe is about λ with the distance of conduction tool back plane _g ^(λ)/ 4;

Wherein ${\mathrm{\λ}}_g^{\left(\mathrm{\λ}\right)}=\mathrm{\λ}/\sqrt{1-{\mathrm{\λ}}^2/{\mathrm{\λ}}^2\mathrm{cr}}$ Wavelength for square waveguide pipe; λ _Cr=2a is its cut-off wavelength, and a is the width edge length in rectangle waveguide pipe cross section.

4, the electromagnetic transmission conversion equipment of high polarization barrier as claimed in claim 1 is characterized in that: wherein polarizer size, size, shape and material can be selected according to required frequency band.

5, the electromagnetic transmission conversion equipment of high polarization barrier as claimed in claim 1 is characterized in that: when wherein polarizer reception signal was the linear polarization signal, such polarizer can take out of service.

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