Semi-active multiple beam arrays

Semi-active multiple beam arrays

Roederer, A.G. (TU Delft Microwave Sensing, Signals & Systems)
Yarovoy, Alexander (TU Delft Microwave Sensing, Signals & Systems)

2019-05-01

The low power efficiency (5-15%) of solid state power amplifiers, working in back-off to guarantee a good linearity, could become the show stopper for some future space and terrestrial communication ventures at Ka-band and above. Semi-active reflector and conformal antennas, using Butler-like matrices between the power amplifiers and the feed elements, were first introduced to directly generate flexible multiple beams most efficiently.For linear and planar arrays, such phase-only control at power amplifier inputs can provide beam zooming or amplitude tapering, but no proper beam steering. The paper discusses and analyses the extension of the semi-active principle to linear and planar arrays, by use of multiport amplifiers with amplitude and phase input control to power the elements most efficiently.Performances and limitations of such systems are analyzed and demonstrated for a few examples.

http://resolver.tudelft.nl/uuid:c9331a57-9475-431d-aa40-2a71a27d5578

https://doi.org/10.23919/URSI-EMTS.2019.8931469

IEEE

9781946815064

2019 URSI International Symposium on Electromagnetic Theory, EMTS 2019

2019 URSI International Symposium on Electromagnetic Theory, EMTS 2019, 2019-05-27 → 2019-05-31, San Diego, United States

2019 URSI International Symposium on Electromagnetic Theory, EMTS 2019

Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

Institutional Repository

conference paper

© 2019 A.G. Roederer, Alexander Yarovoy