Device and method for implementing DVB-H antenna matching network for mobile telephone

A technology of antenna matching network and implementation method, applied in diversity/multi-antenna systems, space transmit diversity, electrical components, etc., can solve problems such as difficulty in implementation, insufficient isolation of input ports, unsatisfactory operation of radio frequency switch 2, etc., to achieve The effect of saving device cost

Inactive Publication Date: 2008-07-02
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The disadvantage of this solution is: in actual work, the RF switch 2 connected to the antenna does not work ideally, the input and output of the switch do not match (deviating from 50 ohms), and the isolation of each input port is not enough
[0008] The disadvantage of this solution is: in the electric adjustment device, the varactor is easy to realize by changing the DC (Direct Current, direct current) bias, but the electrically adjustable inductor, especially the small electric adjustable inductor, is difficult to realize

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  • Device and method for implementing DVB-H antenna matching network for mobile telephone
  • Device and method for implementing DVB-H antenna matching network for mobile telephone
  • Device and method for implementing DVB-H antenna matching network for mobile telephone

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Embodiment Construction

[0039] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0040] see figure 2 Shown is a schematic diagram of the antenna matching network solution of the present invention. like figure 2 As shown, the device for realizing a DVB-H antenna matching network for a mobile phone is described, which is applied to a DVB-H antenna system of a DVB-H handheld device. The device includes a connecting device 10 and a matching device 20 .

[0041] The connecting device 10 is used to connect the port A of the antenna system (connected with the signal port of the DVB-H handheld device circuit PCB board) to a single input port of a radio frequency switch 1 (being a 1XN switch), and then connect the radio frequency switch 1 N output ports are respectively connected to N branches;

[0042]The matching device 20 is used to set a corresponding matching circuit for each branch. The matching circuit of any branch is an...

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Abstract

The invention discloses a device and a method thereof for realizing a matching network of a DVB-H antenna of a cell phone, which are used in a DVB-H antenna system of a DVB-H handheld device. The invention is characterized in that: the method comprises the following steps: step 1. an interface of the antenna system is connected with an input end of a radio frequency switch; an output end of the radio frequency switch is respectively connected with N branches, and the number of the branches is a natural number; step 2. a corresponding matching antenna is set for each branch; each matching antenna is regulated to a corresponding equivalent matching circuit through topology optimization of the matching circuit according to the working condition of the antenna system, and then each branch is connected with a feeding port of the antenna in the antenna system. Compared with a proposal of a parallel matching circuit selected by the former switch, the invention removes a radio frequency switch 2 and selects matching of each branch in on state, thus solving the problem of non-ideal work of the radio frequency switch 2 in the former proposal and saving device cost consequently.

Description

technical field [0001] The invention relates to a mobile phone DVB-H antenna, in particular to a device and method for realizing a matching network of the DVB-H antenna in the communication field. Background technique [0002] In 1993, the DVB (Digital Video Broadcast, digital television broadcasting) project began to develop digital video broadcasting specifications, and was later developed by the international standard organization ETSI (European Telecommunication Standards Institute, European Telecommunications Standards Institute) and CENELEC (European Committee for Electrotechnical Normalization , European Committee for Electrotechnical Standardization) to form an international standard. DVB main standards include: satellite digital television transmission system DVB-S, terrestrial digital television transmission system DVB-T, cable digital television transmission system DVB-C. In November 1994, ETSI officially adopted the DVB-H standard (developed on the basis of DVB-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/38H04B7/04H04B1/44
Inventor 王玲玲程微
Owner ZTE CORP
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