Miniaturization of UWB Antennas and its Influence on Antenna-Transceiver Performance

A modified small-size tapered monopole antenna is optimized for ultra wideband applications in co-design with the transceiver. Our optimization procedure aims at finding an antenna not only with low VSWR, but also miniaturizing the antenna at the same time. Our proposed optimization algorithm, real-coded compact genetic algorithm, RCCGA, has lowered the antenna area more than 48% compared to previous work for 3.1 to 11.7 GHz bandwidth operation. Design with the need for co-design and co-integration of the whole system the optimized antenna area is even more miniaturized and this paper explains in detail the trade off between antenna size, antenna performance and transceiver performance.