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Experimental evaluation of a high gain dual-band beam steerable transmit-array

Matos, S.A. ; Lima, E.B. ; Costa, J.R. ; Fernandes, C. A. ; Fonseca, N.

Experimental evaluation of a high gain dual-band beam steerable transmit-array, Proc European Conf. on Antennas & Propagation - EUCAP, London, United Kingdom, Vol. -, pp. - - -, April, 2018.

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Abstract
This paper presents the design and measurement
of a novel transmit-array (TA) that is able to combine wide
beam steering and high gain for two distinct frequency bands.
The TA is designed for a mobile ground platform to operate at
satellite communications in the Ka-bands: Rx (19.7-20.2 GHz)
and Tx (29.5-30.0 GHz). A 28 dBi gain is obtained for 30 GHz
and 24 dBi for 20 GHz. The zenith beam steering results from a
linear displacement of the aperture (􀫚􀫢􀫟 × 􀫚􀫝􀫠 􀢓􀢓􀫛) in front
of a stationary feed. A scanning range of 50º was obtained with
2dB scan loss. Overall, the dual-band TA performs as well as if
two independent single band apertures were designed