Antenna device for receiving radio broadcasting signal

A technology of radio broadcasting and antenna device, applied in the fields of video broadcasting and radio audio, can solve the problems of too narrow working frequency band and inability to achieve satisfactory reception effect, etc.

Inactive Publication Date: 2013-07-03
BEIJING LITE ON MOBILE ELECTRONICS & TELECOMM COMPONENTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still problems with this scheme using tunable components, for example, this scheme needs to precisely control different voltages to work in a specific frequency band, only one matching circuit can be controlled, and its working frequency band is still too narrow to achieve satisfactory reception Effect

Method used

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  • Antenna device for receiving radio broadcasting signal
  • Antenna device for receiving radio broadcasting signal
  • Antenna device for receiving radio broadcasting signal

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Embodiment Construction

[0016] Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. If the detailed description of some related prior art may obscure the gist of the present invention, its detailed description will not be provided here. In various embodiments, the same reference numerals are used to denote elements or units performing the same function.

[0017] The present invention adopts two or more matching circuits in the antenna device, and widens the working frequency band of the antenna device by selecting different matching circuits for different frequency bands of CMMB signals.

[0018] figure 1 is a schematic structural diagram of the antenna device according to the first embodiment of the present invention.

[0019] Such as figure 1 As shown, the antenna device 100 according to the first embodiment of the present invention includes an antenna unit 101 , a switch circuit 102 , a first matching circuit 103 and a seco...

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Abstract

The invention provides an antenna device for receiving a radio broadcasting signal, which comprises an antenna unit, a first matching circuit, a second matching circuit, and a switching circuit, wherein the antenna unit receives the radio broadcasting signal; the first matching circuit and the second matching circuit receive the radio broadcasting signal from the antenna unit; and the switching circuit is connected among the antenna unit, the first matching circuit and the second matching circuit, receives a selective signal, and gates the first matching circuit or the second matching circuit to transmit the radio broadcasting signal according to the selective signal. The antenna device gates one matching circuit corresponding to a frequency range of a CMMB (China Mobile Multimedia Broadcasting) signal to be received through a combination of the switching circuit and the two matching circuits, so that a working frequency range of an antenna when the antenna receives the CMMB signal is widened, and the signal receiving stability is improved.

Description

technical field [0001] The invention relates to the field of radio audio and video broadcasting, in particular to an antenna device for receiving radio audio and video broadcasting signals. Background technique [0002] China Mobile Multimedia Broadcasting (CMMB) technology is a mobile multimedia broadcasting network formed by using high-power S-band satellite signals. Specifically, after the ground transmission center sends the signal to the S-band geostationary satellite, the geostationary satellite forwards the received signal, and the forwarded S-band signal is directly received by the receiving terminal on the ground. The satellite can also send the signal to the supplementary transponder on the ground for processing through the distribution channel, and the signal processed by the supplementary transponder is received by the receiving terminal. In another case, the ground transmission center can also send the signal to the wireless mobile communication network, and ea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q5/00H01Q23/00H01Q5/335
Inventor 刘瑞斌李鹏
Owner BEIJING LITE ON MOBILE ELECTRONICS & TELECOMM COMPONENTS
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