Compact Devices for Complex Wave Monitoring for Tunable Impedance Matching Networks

For the realization of tunable matching networks, different approaches based on functional materials or micromechanical devices with varying performances has been presented in the past. The dynamic control of these devices requires the measurement of the transmitted power. This paper evaluates different methods for adequate power measurement within the context of mobile communication devices in the frequency range of 500 MHz to 5 GHz. The circuits are analyzed and compared concerning their insertion loss, integrability, size and multiband-capability.