A Triband Wire Antenna for All Radio and TV bands

A triband rod antenna is presented. It is intended for reception of AM, FM, DAB and TV in vehicles. The antenna uses coil traps to facilitate multiple resonant lengths in order to be matched to 50 Ohms for frequency bands centred at 97, 204 and 571 MHz. In fact, it features a double resonance in the quite broad 470-694 MHz TV band. Difficulties in computer simulations of antenna match are discussed, a design methodology is suggested and measurements on a breadboard model are presented.