DocumentCode :
2948054
Title :
A microstrip patch phased array antenna with parasitic elements and reactance-tuned coupling
Author :
Luther, Justin J. ; Gong, Xun
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Univ. of Central Florida, Orlando, FL, USA
fYear :
2011
fDate :
3-8 July 2011
Firstpage :
3291
Lastpage :
3294
Abstract :
A new approach to parasitic phased array antennas is presented. A symmetric two-layer, single input inexpensive three-element array at 1 GHz employing varactors as tuning mechanisms is designed, fabricated and measured. The driven element is mutually coupled to two parasitic elements in the H-plane, and the mutual coupling is tuned by open-circuited microstrip stubs on the feed layer. The varactors are used to break the symmetry of the structure, resulting in beam scanning, and to maintain resonance at 1 GHz. A symmetric scanning range of -20 to +20° is measured with maintained impedance matching and radiation pattern integrity. The low cost of this array is advantageous to applications in point-to-point communication systems, weather and target tracking radar systems.
Keywords :
antenna phased arrays; antenna radiation patterns; circuit tuning; electromagnetic coupling; impedance matching; microstrip antenna arrays; resonance; varactors; H-plane; impedance matching; microstrip patch phased array antenna; mutual coupling; open-circuited microstrip stub; parasitic element; parasitic phased array antenna; point-to-point communication system; radiation pattern integrity; reactance-tuned coupling; resonance; target tracking radar system; tuning mechanism; varactor; weather radar system; Antenna measurements; Arrays; Couplings; Feeds; Microstrip; Resonant frequency; Varactors; Electronically Scanned Array; Microstrip Antennas; Parasitic Array; Phased Array Antenna;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Antennas and Propagation (APSURSI), 2011 IEEE International Symposium on
Conference_Location :
Spokane, WA
ISSN :
1522-3965
Print_ISBN :
978-1-4244-9562-7
Type :
conf
DOI :
10.1109/APS.2011.5997238
Filename :
5997238
Link To Document :
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