Impedance Matching Of Antenna Of Consumptive Electronic Products

Consumptively mobile electronic-products such as smart phones, MID, PND and fashionable Tablet PC, etc. are indispensable in the society. In these electronic products, one or more wireless receiver or transmitter device is necessary. So, the antenna is of utmost importance since it is the key device to transmit or receive electromagnetic waves. However, it is difficult to achieve the best receiving or transmitting performance just relying solely on the structure and properties of the antenna itself. So, it is an important issue that how to meet the performance requirements of the wireless transceiver via an effective antenna matching according to the different characteristics of the antenna produced in large quantities. The features and performance in the design and the methods of production resistance of some main antenna are investigated, and impedance characteristics and matching of the GPS antenna, WIFI and Bluetooth and FM antenna are discussed in detail in this paper.It is necessary that the consumptive products should be simple in matching circuit and very convenient to meet the needs of users and easy to use, as well as their production efficiency should be high; amongst them is the broadband antenna often a difficult issue. Simple and fast matching circuit for a broadband system itself is a contradiction. So, after investigating the characteristics and impedance matching method of the broadband of U-band digital TV whip antenna, we expect to achieve an excellent impedance match of the antenna of the consumptive portable electronic-products through combination of genetic algorithm based on MATLAB toolbox and the measured data. The effectiveness of the proposed method, by which the relevant parameters are obtained based on the combination of the measured data and Matlab genetic algorithm toolbox, is then carried out with experimental data of an actual rod antenna as an example. The results verify the accuracy of the method, which is a simple and fast way to find more precise parameters of antenna matching. Therefore, the method we proposed provides the technical staff an effective way to obtain the design of the wideband matching network.