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Earphone antenna used for China mobile multimedia broadcasting

A technology of multimedia broadcasting and earphone antenna, which is applied in the direction of antenna equipment with additional functions, antenna, antenna coupling, etc., can solve problems such as unfavorable, affecting signal reception, and reducing the volume of receiving terminals, so as to enhance the received signal strength and reduce Volume, the effect of eliminating distractions

Inactive Publication Date: 2012-03-28
SHANGHAI AMPHENOL AIRWAVE COMM ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the CMMB antenna of the prior art has the following disadvantages: both the external rod CMMB antenna and the stylus CMMB antenna need to leave a large enough space inside the receiving terminal so that the rod antenna and the stylus CMMB antenna can be hidden, which is not conducive to reducing the The small size of the receiving terminal affects the design of the receiving terminal, and the biggest disadvantage of the built-in CMMB antenna is that the signal strength is not enough, which affects the reception of the signal

Method used

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  • Earphone antenna used for China mobile multimedia broadcasting
  • Earphone antenna used for China mobile multimedia broadcasting
  • Earphone antenna used for China mobile multimedia broadcasting

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Embodiment Construction

[0025] Because the vast majority of receiving terminals are equipped with earphone lines, the CMMB antenna of the present invention uses the audio line of the earphones of the receiving terminal as the CMMB antenna, and eliminates the interference of the audio signal on the earphone audio line to the CMMB antenna by increasing the interference removal circuit. , thus forming the earphone antenna of CMMB. In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0026] see figure 1 , figure 1 It is a structural schematic diagram of the first embodiment of the CMMB earphone antenna of the present invention. The earphone antenna in this embodiment includes an earphone plug 11 , an earphone audio cable 13 , a first interference removing circuit 15 , and earphone left and right channel cables 17 . The earphone plug 11 is connecte...

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Abstract

The invention relates to an earphone antenna used for China mobile multimedia broadcasting. The earphone antenna comprises an earphone plug, an earphone audio line and a first descrambling circuit, wherein the earphone plug is used for connecting a receiving terminal and is used as a feed point of the earphone antenna; one end of the earphone audio line is connected with the earphone plug, and the earphone audio line is used as the earphone antenna; and the first descrambling circuit is connected with the other end of the earphone audio line and is used for eliminating interference caused by audio signals on the earphone audio line with the earphone antenna. A receiving terminal adopting the earphone antenna used for the China mobile multimedia broadcasting is not needed to occupy internal space, and is favorable for enhancing the strength of received signals.

Description

technical field [0001] The invention relates to an antenna for China Mobile Multimedia Broadcasting (CMMB), in particular to an earphone antenna for CMMB. [0002] Background technique [0003] CMMB adopts advanced digital technologies such as coding, compression, and modulation to provide TV program services for portable receiving terminals with small screens. It has technical features that traditional digital TVs do not have, such as mobile reception, high efficiency and power saving. In order to receive CMMB signals, a CMMB antenna is needed, and the CMMB antennas of the prior art generally include the following: (1) an external pull rod CMMB antenna; (2) a stylus CMMB antenna; (3) a CMMB antenna built into a receiving terminal. [0004] However, the CMMB antenna of the prior art has the following disadvantages: both the external rod CMMB antenna and the stylus CMMB antenna need to leave a large enough space inside the receiving terminal so that the rod antenna and the s...

Claims

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Application Information

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IPC IPC(8): H01Q1/44H01Q1/52H01Q21/00
Inventor 杨先歌
Owner SHANGHAI AMPHENOL AIRWAVE COMM ELECTRONICS CO LTD
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