An Electronically Tunable Single-Layer Reflectarray Antenna Element With Improved Bandwidth

被引：29
|
作者：
Liu, Chang [1 ]
Hum, Sean Victor [1 ]
机构：
[1] Univ Toronto, Dept Elect & Comp Engn, Toronto, ON M5S 3G4, Canada
来源：
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2010年 / 9卷
关键词：
Antenna arrays; microstrip arrays; reconfigurable antennas; reflectarrays; reflector antennas; varactors; VARIABLE SIZE; RING ELEMENTS; DESIGN; BAND; PATCH;
D O I：
10.1109/LAWP.2011.2104934
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This letter presents a varactor diode-tuned reflectarray element that achieves an improved element phase bandwidth relative to designs that employ a single resonance for phase tuning. This is accomplished by introducing two resonances in the element while maintaining a single-layer structure. Simulation results based on full-wave simulations compare favorably to experimental measurements inside a waveguide. The unit cell exhibits over 380 of phase agility, 3.5 dB of peak cell loss, and a 2.4% phase bandwidth at 5.4 GHz. In addition, it has the attractive features of using only a single control voltage as well as having a quasi-linear phase versus voltage characteristic.
引用
收藏
页码：1241 / 1244
页数：4
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