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A 10- to 21-GHz, low-cost, multifrequency, and full-duplex phased-array antenna system

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7 Author(s)
Tae-Yeoul Yun ; Dept. of Electr. Eng., Texas A&M Univ., College Station, TX, USA ; Chunlei Wang ; Zepeda, P. ; Rodenbeck, C.T.
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This paper presents a novel phased-array antenna system with multifrequency, full-duplex operation, and wide-beam scanning. The system consists of a wideband power divider, a low-loss and low-cost multiline phase shifter controlled by dual piezoelectric transducers (PETS), a four-channel multiplexer, microwave monolithic integrated circuit (MMIC) amplifiers, and a stripline-fed Vivaldi antenna array. The multiline PET phase shifter has a low perturbation loss of less than 2 dB and a total loss of less than 4 dB up to 40 GHz, with a maximum phase shift of 650°. Using dual-aligned PETS for bidirectional phase shifting results in wide scan angles of 38.6°, 37.6°, 43°, and 40° for the four channels at 10, 12, 19, and 21 GHz, respectively. The four-channel diplexer demonstrates low insertion loss with high isolation between channels. The new multifrequency phased-array system provides wide-beam scanning and full-duplex capability using a simple, low-cost architecture. The system can be used for applications in mobile satellite communications

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Antennas and Propagation, IEEE Transactions on  (Volume:50 ,  Issue: 5 )