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Article: An equivalent circuit and modeling method for defected ground structure and its application to the design of microwave circuits.(Technical Feature)
- Article from:
- Microwave Journal
- Article date:
- November 1, 2003
- Author:
CopyrightCOPYRIGHT 2003 Horizon House Publications, Inc. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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In this article, the equivalent circuit and modeling method for a defected ground structure (DGS) is proposed, to be used in the design of a microwave circuit. Using the proposed equivalent circuit permits the optimization of the DGS circuits. Simulation and measurements on a fabricated DGS low pass filter show its optimized passband and stopband performance. Furthermore, this article describes a novel design method to improve the performance of a class-AB power amplifier, using the proposed DGS structure. The equivalent circuit of DGS has been used to optimize the output matching circuit of the power amplifier. The design method for a power amplifier presented in this ...