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Piezoelectric transducer controlled multiple beam phased array using microstrip Rotman lens

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3 Author(s)
Sang-Gyu Kim ; Dept. of Electr. Eng., Texas A&M Univ., College Station, TX, USA ; P. Zepeda ; Kai Chang

A simple and low-cost multiple beam phased array is designed using a microstrip Rotman lens and multi-line phase shifter controlled by a piezoelectric transducer (PET) at Ka-band. A microstrip Rotman lens with five beam ports and nine array ports is used as a feed for a multiple beam antenna array to generate five beams centered at the angles of 0°, ±15°, and ±30°. The lens fed nine-element patch array shows the antenna gain of 10 dBi and sidelobe suppression of 10 dB. Each beam is steered over ±8° using two PET-controlled phase shifters, and the five beams cover ±38° from the broadside.

Published in:

IEEE Microwave and Wireless Components Letters  (Volume:15 ,  Issue: 4 )