-Wide band truncated rectangular microstrip antenna with H slot loaded and defected ground plane structure is presented in this paper to increase the bandwidth. It is found that the impedance bandwidth of a microstrip antenna could be enhanced considerably when a defected ground structure is used .The band width of a truncated rectangular microstrip antenna with H slot is 21.2% whereas after ad...

This paper describes a technique for the design oftwo-signal four-quadrant multipliers, Iiiear on both inputs and use-ful from dc to an upper frequency very close to the -f~of the transis-tors comprising the circuit. The precision of the product is shown tobe limited primarily by the matchmg of the transistors, particularlywith reference to emitter-junction areas. Expression...