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Power amplifier and antenna integration utilizing capacitively coupled feeding mechanism

Zhou, Hengyi, Pal, Arpan, Mehta, Amit, Nagasundaram, Elango, Lees, Jonathan and Mirshekar-Syahkal, Dariush 2017. Power amplifier and antenna integration utilizing capacitively coupled feeding mechanism. Presented at: International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, San Diego, CA, USA, 9-14 July 2017. 2017 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting. IEEE, pp. 2355-2356. 10.1109/APUSNCURSINRSM.2017.8073220

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Abstract

A new integration technique for antenna and Power Amplifier (PA) without complex impedance matching network is presented. This method helps to reduce the losses, power consumption and overall size of the RF front-end modules without affecting the efficiency of the PA. This design technique utilizes a capacitively coupled feeding mechanism to control the input impedance of the antenna. By optimizing the antenna dimension the impedance of first two harmonics (2.4 and 4.8 GHz) of a Class-B PA can be matched without additional matching circuit and the PA can provide a maximum efficiency of 70% at the operating frequency of 2.4 GHz. Thus, the proposed integration technique reduces the overall size of the RF front-end module without affecting the output efficiency of the PA. The antenna provides an axial beam with a maximum gain of 6.18 dBi and 87% radiation efficiency.

Item Type: Conference or Workshop Item (Paper)
Date Type: Publication
Status: Published
Schools: Engineering
Publisher: IEEE
ISBN: 978-1-5386-3284-0
ISSN: 1947-1491
Last Modified: 13 Aug 2019 13:59
URI: http://orca.cf.ac.uk/id/eprint/113570

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