CST – Computer Simulation Technology

An Ultra Wideband Tapered Slot Antenna

An Ultra Wideband Tapered Slot Antenna
Xiaoxing Yin, Ziguo Su, Wei Hong, Tie Jun Cui
Antennas and Propagation Society International Symposium, 2005 IEEE
Vol. 2A , 3-8 July 2005
A typical tapered slot antenna (TSA) consists of a gradually widening slot in a metallic plate printed on a substrate. The bandwidth of TSA is limited mainly by the transition of the feeding line and slot-line, which varies with frequency. A wideband Vivaldi TSA, fed by a microstrip line, has been realized. The slot-line is etched on the ground plane of the microstrip line; one side is a narrow open port and the other side is a gradually widening radiating port. The microstrip is very close to the open port of the slot-line. At the end of the microstrip, a shorting pin, which is also close to the slot-line, is connected to the ground plane. In this way, all reflecting waves from the open port of the slot-line and the shorting pin, along with the original waves, radiate at almost the same time towards the wide radiating port of the antenna

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