A vivaldi antenna with switchable and tunable band-notch characteristic

作者：Yang Deqiang; Zeng Huiling; Liu Sihao^*; Pan Jin

来源：Progress in Electromagnetics Research C, 2016, 68: 75-83.

DOI：10.2528/pierc16070603

• Band-notch characteristics
• Band-notched characteristics
• Center frequency
• High quality factors
• Notch-band-edge selectivities
• Parameters design
• Stepped impedance resonator
• Vivaldi antennas

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 3.1GHz–6.8GHz. 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.

• 出版日期2016
• 单位电子科技大学