the use of double tuned matching networks to increase the bandwidth of a frequency dependant load, such as an antenna, is a useful technique. Double tuned matching networks have been presented in [1]–[3]. Their application to antennas has also been shown. For example, a disk-loaded monopole antenna using a double-tuned matching network is described in [4]. Double-tuned matching has also been applied to patch antennas in the form of stacked patches [5]. In the design of com- pact antennas such techniques can be useful provided that the matching network can be made to fit into a compact area.