Ibrahim, Sarah Adel and Wang, Ziming and Farrell, Ronan (2017) An MEMS Phase Shifter With High PowerHandling for Electronic BeamTilt in Base Station Antennas. IEEE Microwave and Wireless Components Letters, 27 (3). pp. 269-271. ISSN 1531-1309

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Abstract

This letter presents the implementation of RF MEMS-based phase shifter with high power handling capabilities (measured IP3 >63 dBm), high phase, and amplitude linearity (measured rms deviation <;±1.56° and ±0.16 dB) for cellular applications. Two phase shifter circuits are designed and tested with steps of ±3° and ±17.5° at 900 MHz to efficiently perform an electronic beam tilt for an eight-element array with more than 0.9° accuracy and up to 10° tilt can be obtained. The measured insertion and return loss for the largest phase state are 1.3 and 13 dB, respectively. For experimental validation, a 3 × 2 array of angled dipole patch antennas is designed and fabricated and four different scans are successfully measured showing a maximum deviation of ±0.6° only for the scan angle.

Item Type:	Article
Keywords:	Beam scanning; MEMS; phase shifter; cellular radio; dipole antenna arrays; micromechanical devices; microstrip antenna arrays; phase shifters; UHF antennas;
Academic Unit:	Faculty of Science and Engineering > Electronic Engineering
Item ID:	11525
Identification Number:	https://doi.org/10.1109/LMWC.2017.2664583
Depositing User:	Ronan Farrell
Date Deposited:	30 Oct 2019 15:05
Journal or Publication Title:	IEEE Microwave and Wireless Components Letters
Publisher:	IEEE
Refereed:	Yes
URI:	Publisher
Use Licence:	This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here

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