Resonant frequencies and dual-frequency operation of a bow-tie microstrip antenna

2003 ◽  
Author(s):  
Xu-Pu Zhang ◽  
Shun-Shi Zhong
Keyword(s):  
Microstrip Antenna ◽  
Dual Frequency ◽  
Resonant Frequencies ◽  
Bow Tie

Slot-loaded bow-tie microstrip antenna for dual-frequency operation

1998 ◽  
Vol 34 (18) ◽  
pp. 1713 ◽  
Author(s):  
Kin-Lu Wong ◽  
Wen-Shan Chen
Keyword(s):  
Microstrip Antenna ◽  
Dual Frequency ◽  
Bow Tie

Compact dual-frequency semi-circular microstrip antenna

2004 ◽  
Vol 43 (5) ◽  
pp. 430-432 ◽  
Author(s):  
Wenjun Chen ◽  
Binhong Li ◽  
Xie Tao
Keyword(s):  
Microstrip Antenna ◽  
Dual Frequency ◽  
Circular Microstrip Antenna

scholarly journals Multi frequency multi bit amplitude modulation of spoof surface plasmon polaritons by schottky diode bridged interdigital SRRs

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Haotian Ling ◽  
Baoqing Zhang ◽  
Mingming Feng ◽  
Pengfei Qian ◽  
Yiming Wang ◽  
...  
Keyword(s):  
Surface Plasmon ◽  
Surface Plasmon Polaritons ◽  
Amplitude Modulation ◽  
Schottky Diodes ◽  
Ring Resonators ◽  
Dual Frequency ◽  
Metal Line ◽  
Resonant Frequencies ◽  
Plasmon Polaritons ◽  
Spoof Surface Plasmon Polaritons

AbstractMulti-frequency multi-bit programmable amplitude modulation (AM) of spoof surface plasmon polaritons (SPPs) is realized at millimeter wave frequencies with interdigital split-ring resonators (SRRs) and In-Ga-Zn-O (IGZO) Schottky diodes. Periodic SRRs on a metal line guide both SRR mode and spoof SPP mode, the former of which rejects the spoof SPP propagation at the SRR resonant frequencies. To actively modulate the amplitude of spoof SPPs, IGZO Schottky diodes are fabricated in the SRR gaps, which continuously re-configure SRRs to metallic loops by applying bias. Interdigital gaps are designed in SRRs to increase the capacitance, thus red shifting the resonant frequencies, which significantly broadens the operation bandwidth of multi-frequency AM. Thus, cascading different kinds of interdigital SRRs with Schottky diodes enables multi-frequency multi-bit AM programmable. As a demonstration, a dual-frequency device was fabricated and characterized, which achieved significant multi-bit AM from −12.5 to −6.2 dB at 34.7 GHz and from −26 to −8.5 dB at 50 GHz independently and showed programmable capability.

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