Wireless communication system are developing rapidly, due to which new standards like WIMAX and 4G Long Term Evaluating(LTE) with a purpose of achieving high data rate result in high end applications such as high speed internet, video conferences and broadband width. These applications require mobile base stations at the transmitter as well as at receiver (T/R) to support features like multiple...

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...