in this paper a varactor-based variable impedance matching network intended to be integrated in an automatic impedance matching system is designed. The operating frequency is fixed at 2.4 GHz, ...

A varactor controlled electronically reconfigurable dipole antenna is presented. The property of a stepped impedance resonator is utilized to achieve the resonant frequency of the dipole antenna. By ...

Its direct-to-frequency digital FM modulator provides a stable RF signal while its advanced measurement interface provides RF, MPX and audio spectrums. Nicolas Boulay, Chantal Fourgeaud and Gregory ...