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VHF circularly polarized transmitting antenna

A technology of transmitting antenna and coaxial line, applied in the field of communication, can solve the problems of the easily damaged antenna itself and the signal source, the high power capacity of the reflected wave of the antenna, and the limited capacity, so as to reduce multipath fading, reduce the standing wave ratio, and ensure the signal Effect

Pending Publication Date: 2019-12-27
卞国荣 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the antenna itself and the signal source are easily damaged due to the large reflected wave of the antenna and the limited power capacity when the circularly polarized antenna in the prior art is applied to the transmission of high-power broadcast television signals. , so as to provide a circularly polarized radio and television multimedia transmitting antenna with a small standing wave ratio and suitable for high-power transmission

Method used

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  • VHF circularly polarized transmitting antenna
  • VHF circularly polarized transmitting antenna
  • VHF circularly polarized transmitting antenna

Examples

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Embodiment 1

[0032] This embodiment provides a VHF circularly polarized transmitting antenna, the structure of which is as follows figure 1 As shown, it includes a reflective component, a radiating component 200 and a feeding component 300 . The reflection component includes a flat reflection frame 100 on which a reflection net 110 is arranged. The radiation component 200 includes at least two groups of radiation components 210, each group of radiation components 210 includes a first radiation unit 211 arranged along a first direction, and a second radiation unit 212 arranged along a second direction, and each group of first radiation units 211 coincides with the center of the second radiation unit 212 . The feeder component 300 includes a first feeder circuit and a second feeder circuit. Both the first feeder assembly 310 and the second feeder assembly 320 have at least two output ends 332, and the output ends 332 of the two sets of feeder assemblies are respectively connected to The fi...

Embodiment 2

[0038] This embodiment provides a VHF circularly polarized transmitting antenna, which includes a reflective component, a radiating component 200 and a feeding component 300 . The reflection component includes a flat reflection frame 100, on which a reflection net 110 is arranged to reduce wind load. The radiation component 200 includes at least two groups of radiation components 210, each group of radiation components 210 includes a first radiation unit 211 arranged along a first direction, and a second radiation unit 212 arranged along a second direction, and each group of first radiation units 211 coincides with the center of the second radiation unit 212 . The feeder component 300 includes a first feeder circuit and a second feeder circuit, the first feeder assembly 310 and the second feeder assembly 320 each have at least two output ends 332, and the output ends 332 of the two sets of feeder assemblies are respectively connected The first radiating unit 211 and the secon...

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Abstract

The invention provides a VHF circularly polarized transmitting antenna. The VHF circularly polarized transmitting antenna comprises a reflection part, a radiation part and a feeding part; the reflection part comprises a flat reflection frame; a reflection net is arranged on the reflection frame; the radiation part comprises two sets of radiation assemblies; each radiation assembly comprises a first radiation unit arranged along a first direction and a second radiation unit arranged along a second direction; and the center of the first radiation unit in each set of radiation assembly is overlapped with the center of the second radiation unit in the corresponding radiation assembly; the feed part comprises a first feed circuit and a second feed circuit which are connected with the first radiation units and the second radiation units respectively; a first feed assembly and a second feed assembly are connected with an electric signal source through feed lines; the reflection net is arranged on the reflection frame, so that the rotation direction of reflected circularly polarized electromagnetic waves is reversed, and the reflected circularly polarized electromagnetic waves are receivedby the circularly polarized antenna again, and therefore, the influence of multipath fading caused by multipath reflection is reduced, and the VHF circularly polarized antenna can work in a severe environment, and well ensure the smoothness of signals.

Description

technical field [0001] The invention relates to the technical field of communication, in particular, to a VHF circularly polarized transmitting antenna. Background technique [0002] The radio station or TV station uses stable propagation signals to complete the transmission and propagation with short-wave signals. After internal processing, it uses electromagnetic waves to complete the secondary transmission. The terminal receiving equipment processes the received signals, and then presents video and sound to users. and images etc. At present, broadcast and TV antennas mostly use horizontal polarization or vertical polarization to transmit, and the coverage effect is not ideal, and there are situations where users cannot receive signals or the signals are unstable. The signal transmitted by the circularly polarized antenna has the characteristic that the signal is uniformly distributed in all directions in the plane perpendicular to the propagation direction, and the signa...

Claims

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Application Information

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IPC IPC(8): H01Q1/36H01Q1/50H01Q15/14H01Q15/24H01Q21/00
CPCH01Q1/36H01Q1/50H01Q15/24H01Q21/00H01Q15/14
Inventor 卞国荣
Owner 卞国荣