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Progress In Electromagnetics Research
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A DUAL-BAND IMPEDANCE TRANSFORMING TECHNIQUE WITH LUMPED ELEMENTS FOR FREQUENCY-DEPENDENT COMPLEX LOADS

By B.-T. Moon and N.-H. Myung

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Abstract:
In this paper, a new technique to realize lumped dual-band impedance transformers for arbitrary frequency-dependent complex loads is proposed. For the complex impedance transforming, closed-form design equations are presented for a series-shunt and a shunt-series type and a concept of combination is also presented. They use the proposed equation of input impedance. This equation can easily and exactly obtain the input impedance of any two-port network using the ABCD matrix. Then, in order to realize dual-band operation, four topologies comprising two types and a design method are presented. This technique is numerically demonstrated by various examples with excellent results and it has advantages of simplicity, intuitiveness and versatility because it is a general solution for complex impedance transforming. The proposed dual-band impedance transforming technique can be utilized for practical matching problems such as microwave amplifiers and other devices.

Citation:
B.-T. Moon and N.-H. Myung, "A Dual-Band Impedance Transforming Technique with Lumped Elements for Frequency-Dependent Complex Loads," Progress In Electromagnetics Research, Vol. 136, 123-139, 2013.
doi:10.2528/PIER12111811
http://www.jpier.org/PIER/pier.php?paper=12111811

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