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Study and Application of Built-in Microstrip Antenna for Mobile Communication Terminal

Author: YangJun
Tutor: ZhaoWeiLiang
School: Chongqing University of Posts and Telecommunications
Course: Electromagnetic Field and Microwave Technology
Keywords: Microstrip antenna Formula correction Planar inverted- F antenna Double S-shaped slot array Lin font slot array
CLC: TN822
Type: Master's thesis
Year: 2010
Downloads: 153
Quote: 0
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Abstract


The growing diversification of mobile wireless communication business needs of small multi-band terminal antennas for broadband is increasingly urgent. Microstrip antenna has the advantages of low profile and ease of conformal terminal microstrip built-in antenna research and design more and more attention. Concerns primarily by the Multifunctional built microstrip antenna technology is a miniaturized antenna technology, the bandspread technology and multi-band frequency generation technique. Of this thesis exploration in miniaturized microstrip antenna design theory, and antenna miniaturization based on focusing on how to structure and easy to implement as simple feed broadband multi-frequency characteristics, and antenna structure has some versatility. Small microstrip antenna design theory, in miniaturization technology existing summarized based on the use of the cavity mold theory rectangular microstrip antenna at the edges completely short-circuiting piece is loaded by a large number of calculation and simulation results of the radiation patch size formula corrected, summed up the new empirical formula. And with a numerical example to demonstrate its reasonableness microstrip antenna miniaturization technology exploration and design one for small dual-frequency microstrip antenna handheld GPS satellite terminal suspension structure. In the the antenna miniaturization basis focused bandspread of the microstrip antenna technology and multi-band frequency generation technique. Slot loading technique in the conventional PIFA antenna, respectively, out of the two applied to a mobile wireless communication terminal of built-in mini multi-frequency broadband microstrip antenna design. The first one is to work simultaneously in the built-in microstrip antennas for the GSM900, DCS1800 and the ISM 2.4GHz three bands, with a relatively simple slot array structure is easy to manufacture the double S so that the antenna to be obtained in the low frequency bandwidth greatly improved, relative impedance bandwidth, respectively, 6.5%, 7.5%, 3.4%, and better radiation consistency at the same time in the main radiation direction, at the same time, this structure can also be applied to other higher band antenna and can be compared easy access to a wide bandwidth; second is to apply to all WLAN bands and the WiMAX band built small tri-band broadband microstrip antenna, the relative impedance bandwidth respectively reached 17.2%, 8.9%, 12.1%, at the same time to obtain a relatively having good radiation consistency high radiation gain and in the majority of bands on the main radiation direction, wherein the design of a flexible structure of the \in other mobile radio communication system of small multi-band wideband antenna.

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Radio equipment,telecommunications equipment > Antenna > Antenna: the band and the wave mode of transmission points
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