Monopole-like slot UWB antenna on LTCC

A compact monopole-like slot antenna is presented for ultra-wideband (UWB) applications. The proposed antenna is printed onto a piece of low temperature co-fired ceramic (LTCC) and fed by a microstrip fork-shaped feeding structure. The characteristics of the proposed antenna are investigated numerically and validated experimentally. The prototype with overall size of 25 mm times 25 mm times 0.58 mm achieves good impedance matching, constant gain, stable radiation patterns, and constant group delay over an operating bandwidth of 3.0-11.9 GHz (120%).