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2008-06-26

RF Circuit Design Integrated with Microstrip DGS

By Xiao-Qun Chen, Li Hong Weng, Yu-Chun Guo, and Xiao-Wei Shi
Progress In Electromagnetics Research M, Vol. 3, 141-152, 2008
doi:10.2528/PIERM08052204

Abstract

This paper presents microstrip transmission lines for designing a microstrip open loop resonator bandpass filter and a novel dual band transmitter. Microstrip open loop resonator bandpass filter with the dumbbell DGS under feed lines enhances the harmonic suppressed at the center frequency of 2.44 GHz. An asymmetric dumbbell DGS-integrated microstrip line is applied to the dual band transmitter which performs as a frequency doubler at 6.8 GHz or a power amplifier at 2.4 GHz. For the proposed bandpass filter,it has a wide stopband characteristic with attenuation -25 dB up to 8 GHz and has an -1.25 dB insertion loss by using two dumbbell DGS. Measurements of the dual band transmitter show that in frequency double mode,fundamen tal suppression and maximum output are -41 dBc and 7.8 dBm. And in amplifier mode,second harmonic suppression,P1 dB and gain achieve -52.6 dBc,13.7 dBm and 16.5 dB, respectively.

Citation


Xiao-Qun Chen, Li Hong Weng, Yu-Chun Guo, and Xiao-Wei Shi, "RF Circuit Design Integrated with Microstrip DGS," Progress In Electromagnetics Research M, Vol. 3, 141-152, 2008.
doi:10.2528/PIERM08052204
http://jpier.org/PIERM/pier.php?paper=08052204

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