A concurrent dualband distributed impedance-matching network

Abstract

In a number of applications, it is necessary a network which could provide well-defined impedance values at different frequencies, that is a multiband impedance matching network. In this paper, we present a novel approach for dual-band impedance matching network design using multiresonant circuits. These multiresonant circuits provide short and open circuit conditions at different frequencies, thus enabling and disabling capacitors and inductors to form the desired impedance matching network. To illustrate the proposed method, experimental and simulation results of a dual-band impedance matching network operating at frequencies 2.4 GHz and 5.2 GHz are also presented.

A Switchless Multiband Impedance Matching Technique Based on Multiresonant Circuits

“…This new multiband circuit (Fig. 8) can facilitate the transformation of the mixed network into a complete distributed network using the equivalence between transmission lines and lumped elements [11]. However, in a lumped implementation, the network M 5 is more appropriate given that some parasitic capacitance in shunt with the inductor can be absorbed into the circuit, whereas in the circuit M 6 , the parasitic capacitance of the inductor in the LC series arm cannot be so readily absorbed.…”