Method and device for building CMMB (China Mobile Multimedia Broadcasting) antenna in handheld terminal

A hand-held terminal and built-in antenna technology, applied in power distribution switchgear, selective content distribution, telephone structure, etc., can solve the problems of low receiving sensitivity, poor CMMB playback search ability, and difficult miniaturization of CMMB antenna, etc., to achieve Guaranteed receiving performance, convenient and flexible application, good signal processing effect

Inactive Publication Date: 2015-01-28
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The main purpose of the present invention is to solve the problems that the existing handheld devices are not easy to miniaturize the built-in CMMB antenna, the receiving sensitivity is low, and the CMMB playback search ability is poor. Connect two or more radio frequency branches, and then the CMMB chip selects the signal received by the radio frequency branch to improve the sensitivity of the received signal, reduce the space requirements of the CMMB built-in antenna, and improve the TV reception effect of the CMMB handheld device

Method used

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  • Method and device for building CMMB (China Mobile Multimedia Broadcasting) antenna in handheld terminal
  • Method and device for building CMMB (China Mobile Multimedia Broadcasting) antenna in handheld terminal
  • Method and device for building CMMB (China Mobile Multimedia Broadcasting) antenna in handheld terminal

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Embodiment Construction

[0057] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described below are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0058] The present invention provides a method for a handheld terminal with a built-in CMMB antenna, the flow chart of which is as follows figure 1 shown, including:

[0059] S11) The frequency band range of the CMMB applicable band is at least divided into a first frequency band and a second frequency band;

[0060] S12) The first radio frequency signal falling in the first frequency band output from the built-in antenna is sent to the CMMB chip via the first radio frequency branch;

[0061] S13) The second radio frequency signal falling into the second frequency band output from the built-in antenna is sent to the CMMB chip via the second radio frequen...

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Abstract

The present invention discloses a method for an internal CMMB (China Mobile Multimedia Broadcasting) antenna of hand-held terminals and a device thereof. Wherein, the frequency range of applicable band for CMMB is divided into at least a first band and a second band; a first RF signal output from the internal antenna fell into said first band is transmitted to a CMMB chip via a first RF branch; a second RF signal output from the internal antenna fell into said second band is transmitted to the CMMB chip via a second RF branch; said CMMB chip performs judgment according to signal quality indexes of the first RF signal output from said first RF branch and the second RF signal output from said second RF branch, and selects one RF signal in said first RF signal and second RF signal of which the signal quality index meets the expectation. The method and device in the present invention can improve the sensitivity of the signal reception, and can improve the TV reception effect of CMMB hand-held apparatus.

Description

technical field [0001] The invention relates to a method and a device for a terminal with a built-in CMMB antenna, and is especially suitable for a method and a device for a built-in antenna for improving the CMMB receiving effect of a handheld terminal. Background technique [0002] The full name of CMMB is China Mobile Multimedia Broadcasting, namely: China Mobile Multimedia Broadcasting. CMMB is mainly oriented to small-screen handheld terminal devices. Its terminal products mainly include MP4, mobile phones, GPS, USB receiver sticks, independent receivers, etc., providing digital broadcasting and TV programs, comprehensive information and emergency broadcasting services, and realizing satellite transmission and terrestrial network Combined for seamless synergistic coverage. CMMB adopts mobile multimedia broadcasting and television technology with independent intellectual property rights. The system is operable, maintainable and manageable. It has broadcast and two-way s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04H40/18H04M1/02H04N21/414
CPCH04H20/26
Inventor 张栋
Owner ZTE CORP
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