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Your search keyword '"Gigoyan, Suren"' showing total 90 results
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90 results on '"Gigoyan, Suren"'

19. Low-Cost Planar RF MEMS-Based Attenuator

Author

Raeesi, Amir, primary, Al-Saedi, Hussam, additional, Palizban, Ardeshir, additional, Taeb, Aidin, additional, Abdel-Wahab, Wael M., additional, Gigoyan, Suren, additional, and Safavi-Naeini, Safieddin, additional

Published
2019
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37. A low-cost wideband phase shifter for two-way mm-wave phased array antenna system.

Author

Fourn, Erwan, Al-Saedi, Hussam, Abdel-Wahab, Wael M., Gigoyan, Suren, Taeb, Aidin, and Safavi-Naeini, Safieddin

Abstract

This paper presents a wideband, low-cost, high-performance, and continuous phase shifter for millimeter-wave (mm-wave) phased array systems. Its operational principle is based on modifying the propagation mode of a grounded coplanar waveguide (GCPW) line by placing a high dielectric constant slab over the GCPW line. The propagation constant and hence the phase shift is varied by changing the air gap height between the GCPW line and the dielectric slab. As a proof of concept, a piezoelectric transducer is used to precisely control this air gap height. A printed circuit board-based phase shifter prototype has been designed, fabricated, and tested at two different frequency bands (19–21 and 28.5–30.5 GHz), which are the downlink and uplink bands, respectively, of the Ka-band two-way satellite communication system. A continuous and almost linear phase–voltage characteristic has been achieved experimentally with average phase shift variations 170° and 260° over the two bands, respectively. The footprint of the proposed phase shifter is 2.1 mm×3 mm, which is quite small and suitable for low-profile mm-wave applications. The average insertion losses over the two bands are <0.53 and 2.35 dB with very low variations±0.22 and ±0.35 dB, respectively. [ABSTRACT FROM AUTHOR]

Published
2018
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48. Low-insertion loss phase shifter for millimeter-wave phased array antennas.

Author

Abdellatif, Ahmed Shehata, Taeb, Aidin, Ranjkesh, Nazy, Gigoyan, Suren, Nenasheva, Elizaveta, and Safavi-Naeini, Safieddin

Abstract

This paper proposes a compact, low-loss, and low-cost phase shifter for millimeter-wave/sub-THz applications. The basic idea is to perturb the propagation constant of a high resistivity silicon image guide by high-dielectric constant barium lanthanide tetratitanates (BLT) ceramic loading. Three different BLT ceramic samples have been tested. The measured maximum phase-shift variation reaches 150° at 100 GHz with an average insertion loss of 2.85 dB and an insertion loss variation <0.7 dB for a sample of a 5-mm length. The proposed phase shifter has a bandwidth from 95 to 105 GHz. A low-cost fabrication technology has been developed and used to realize this phase shifter. [ABSTRACT FROM PUBLISHER]

Published
2016
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