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Content Provider | IEEE Xplore Digital Library |
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Author | Qin, Y. Gao, S. Elsdon, M. Sambell, A. |
Copyright Year | 2005 |
Description | Author affiliation: Sch. of Eng. & Technol., Northumbria Univ., Newcastle-upon-Tyne, UK (Qin, Y.; Gao, S.; Elsdon, M.; Sambell, A.) |
Abstract | This paper presents a broadband high efficiency circularly polarized active antenna integrated with class-E power amplifier (PA) at 2GHz. A single circular microstrip patch fed by a cross slot is employed as not only a broadband circularly polarized radiator but also as a harmonics-termination load network, which is directly connected with the class-E power amplifier output. A low cost PCB technology is employed in the circuit fabrication and a low voltage PHEMT transistor is used. A peak drain efficiency of 71.1% for the class-E amplifier is measured at 2.05GHz, together with a maximum radiated power of 28.2 dBm from the active integrated antenna (AIA). Power added efficiency (PAE) over 50% within a 17% bandwidth from 1.92GHz to 2.28GHz is achieved. Axial ratio below 3 dB is obtained over a 9% bandwidth from 1.99 GHz to 2.18 GHz. |
File Size | 355632 |
File Format | |
ISBN | 078039433X |
DOI | 10.1109/APMC.2005.1606698 |
Language | English |
Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Publisher Date | 2005-12-04 |
Publisher Place | China |
Access Restriction | Subscribed |
Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Subject Keyword | Broadband antennas Polarization Broadband amplifiers Power amplifiers Bandwidth High power amplifiers Microstrip Costs Integrated circuit technology Fabrication |
Content Type | Text |
Resource Type | Article |
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