A VIVALDI ANTENNA WITH SWITCHABLE AND TUNABLE BAND-NOTCH CHARACTERISTIC | Zendy

Deqiang Yang | Zendy; Huiling Zeng | Zendy; Sihao Liu | Zendy; Jin Pan | Zendy

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A VIVALDI ANTENNA WITH SWITCHABLE AND TUNABLE BAND-NOTCH CHARACTERISTIC

Author(s) -

Deqiang Yang,

Huiling Zeng,

Sihao Liu,

Jin Pan

Publication year - 2016

Publication title -

progress in electromagnetics research c

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.341

H-Index - 34

ISSN - 1937-8718

DOI - 10.2528/pierc16070603

Subject(s) - vivaldi antenna , antenna (radio) , materials science , optoelectronics , computer science , telecommunications , radiation pattern

This paper proposes an ultrawideband (UWB) Vivaldi antenna with switchable and tunable band-notch characteristics. One stepped-impedance resonator (SIR), which has high quality factor Q and small size, is introduced to create band-notched characteristic with narrow notch band and high notch band edge selectivity. By loading two varactor diodes, a wide tunable notched band is achieved. The center frequency of notch band can tune from 3.1 GHz–6.8 GHz. In order to make the full use of UWB spectrum when there is on coexisting narrow-band applications, switchable band-notch characteristic is desired. Through rational parameters design, the center frequency of notched band is out of UWB range when the DC bias voltage of the varactor diode is 0V. In this way, switchable band-notch characteristic is achieved.

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