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Design of A Microstrip Linear Tapered Slot Antenna  

Jang, Jae-Sam (Gyeongsang National University, Dept. Electronic Engineering)
Kim, Cheol-Bok (Gyeongsang National University, Dept. Electronic Engineering)
Lee, Ho-Sang (Gyeongsang National University, Dept. Electronic Engineering)
Jung, Young-Ho (Gyeongsang National University, Dept. Electronic Engineering)
Jo, Dong-Ki (Gyeongsang National University, Dept. Electronic Engineering)
Lee, Mun-Soo (Engineering Research Institute, Gyeongsang National University)
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Abstract
In this paper, a microstrip linear tapered slot antenna is designed. A tapered slot antenna(TSA) has many advantages such as low profile, low weight, easy fabrication, and compatibility with monolithic microwave integrated circuits(MMIC). In addition, it has demonstrated multi octave bandwidth, moderately high gain, and symmetrical E- and H-plane beam patterns. A feed network is implemented with transition between a microstrip and a slot line for the microstrip linear tapered slot antenna. The transition is consist of two sides. One side has a microstrip line, the other side has a slot line. The dimensions of the microstrip and slot line are ${\lambda}_m/4$ and ${\lambda}_s/4$ at the center of the cross section of the microstrip and slot line. In order to get broad bandwidth antenna characteristics, the tapered length is chosen as $4{\lambda}_o$ and termination width is chosen as $1.75{\lambda}_o$. Experimental results show that the microstrip tapered slot antenna has symmetrical E- and H-plane beam patterns with around 5GHz of bandwidth at center frequency of 5.0GHz.
Keywords
Antenna; TSA;
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