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A novel 2.4 GHz and 6.8 GHz dual-band transmitter using defected ground structure

✍ Scribed by Xiaoqun Chen; Xiaowei Shi; Yuchun Guo; Changmin Xiao

Publisher
John Wiley and Sons
Year
2008
Tongue
English
Weight
482 KB
Volume
50
Category
Article
ISSN
0895-2477

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✦ Synopsis

Abstract

A novel dual‐band module transmitter is presented in this article. It works as a power amplifier at 2.4 GHz that satisfies the 802.11b/g wireless LAN standard and performs as an active frequency doubler at 6.8 GHz with the stop band characteristics of defected ground structure (DGS). The equivalent circuit unit and the stop band characteristics of the microstrip DGS are analyzed and simulated. For the proposed transmitter, second harmonic suppression is below −52.6 dBc in the amplifier mode, and fundamental suppression is below −41 dBc in the frequency doubler mode. It achieves 13.7 dBm of P1 dB and its gain is 16.5 dB at amplifier mode, and its maximum output is 7.8 dBm at 6.8 GHz in frequency double mode. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 3225–3228, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23935

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