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A novel 2.4 GHz and 6.8 GHz dual‐band transmitter using defected ground structure
Author(s) -
Chen Xiaoqun,
Shi Xiaowei,
Guo Yuchun,
Xiao Changmin
Publication year - 2008
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.23935
Subject(s) - transmitter , amplifier , electrical engineering , engineering , dbc , microwave , multi band device , passband , electronic engineering , telecommunications , band pass filter , antenna (radio) , phase noise , cmos , channel (broadcasting)
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