A Novel Miniature Dual-Band Impedance Matching Network for Frequency-Dependent Complex Impedances

In this article, a novel dual-band impedance matching network capable of providing impedance matching between frequency-dependent complex impedances at two frequencies is reported. The proposed dual-band impedance matching network employs the dual-band design of bridged-T coil, such that a very compact circuit size and dual-band operation can be achieved at the same time. Various design examples are presented to demonstrate the versatile property of the proposed dual-band impedance matching network, along with a rigorous analysis of its practical limitations. Also, two design examples of the proposed dual-band impedance matching network are implemented using the integrated passive device technology for performance validation.