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Design and implementation of an adaptive beamformer for phased array antenna applications
Author(s) -
Adamidis George A.,
Vardiambasis Ioannis O.,
Ioannidou Melina P.,
Kapetanakis Theodoros N.
Publication year - 2020
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.32231
Subject(s) - phased array , adaptive beamformer , bandwidth (computing) , electronic engineering , antenna (radio) , reconfigurable antenna , amplitude , microstrip antenna , computer science , phase (matter) , antenna array , modular design , electrical engineering , engineering , beamforming , telecommunications , antenna efficiency , physics , optics , quantum mechanics , operating system
A modular beamformer, fully scalable in amplitude and phase, to be used with transmitting antenna arrays operating in the Digital Cellular System (DCS)/Personal Communications Service (PCS) frequency band, is designed and fabricated in this paper. The implementation of the structure is simple and very low cost; its performance is evaluated by measuring the frequency response, as well as the radiation patterns produced by an antenna array connected to the output of the beamformer. The latter exhibits low return losses and average amplitude imbalance less than ±0.8 dB, whereas the phase deviations do not exceed ±6° on average, over its 300 MHz bandwidth.