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Built-in antenna system of mobile television

A mobile TV, built-in antenna technology, applied in the field of wireless communication, can solve the problems of affecting signal reception, increasing cost, and large loss of active components

Inactive Publication Date: 2011-08-31
SHANGHAI AMPHENOL AIRWAVE COMM ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its main disadvantage is that the active device will increase the cost, and the loss of the active device itself is relatively large, which will directly reduce the efficiency of the antenna and affect the reception of the signal
Furthermore, since active devices are nonlinear devices, their high-order harmonic components will cause interference to other wireless communications such as GSM on mobile terminals

Method used

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  • Built-in antenna system of mobile television
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  • Built-in antenna system of mobile television

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Embodiment 1

[0034] see image 3 , the present invention discloses a built-in antenna system for mobile TV, the antenna system is set in the mobile terminal; the present invention can cover the entire frequency band of mobile TV without using active components, and the efficiency of the antenna fully meets the requirements of DVB-H and other standards . The built-in antenna assembly 30 is completely built between the rear cover 40 and the front cover 50 of the mobile terminal.

[0035] see Figure 4 , Figure 4 A view of the antenna assembly 30 of the present invention is given. The antenna assembly 30 is composed of an antenna bracket 301 and a metal pattern 302 for antenna radiation made of a flexible circuit board.

[0036] Usually the bracket 301 of the antenna is molded by plastic, such as Figure 5 . Commonly used plastics include ABS, PC, PC / ABS, etc. In the present invention, the antenna bracket adopts organic magnetic materials. Organic magnetic materials are artificially ...

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Abstract

The invention discloses a built-in antenna system of a mobile television. The antenna system is arranged in a mobile terminal, and comprises an antenna radiation unit, a coupling circuit and a circuit board of the mobile terminal, wherein resonance frequency produced by the antenna radiation unit covers a part of an ultra high frequency (UHF) band, mainly a high-end part; the circuit board performs radiation as a part of the antenna system, the coupling circuit excites corresponding resonance on the circuit board of the mobile terminal by taking the antenna radiation unit as an excitation source, and the resonance frequency covers the other part of the UHF band, mainly a low-end part; and the whole antenna system realizes double resonance, thereby covering the whole band of the mobile television. The built-in antenna system of the mobile television can cover the whole band of the mobile television without adopting any active device, and the efficiency of an antenna completely meets the requirements of standards of digital video broadcasting for handheld (DVB-H) and the like.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and relates to an antenna system, in particular to a mobile TV built-in antenna system. Background technique [0002] Mobile TV sends TV programs or other multimedia information to mobile or handheld mobile terminals such as mobile phones and PDAs. CMMB, they all work in the UHF frequency band, the frequency range is from 470MHz to 860MHz, and for mobile phones that perform cellular communication, in order to avoid interference to mobile communications, the frequency range is from 470MHz to 752MHz, which is characterized by low frequency, Bandwidth. The resonant frequency of an antenna is inversely proportional to its size, the lower the frequency, the larger the size of the antenna required. The size of the antenna for receiving mobile TV signals will therefore be correspondingly large. As mobile terminals tend to be miniaturized and ultra-thin, the volume reserved for antennas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/24H04N21/414
Inventor 刘君英宋玉明崔耀耀于松涛张新山
Owner SHANGHAI AMPHENOL AIRWAVE COMM ELECTRONICS CO LTD