Monolithic, lumped element, single sideband modulator

A technique for the design of a lumped-element, single-sideband modulator that yielded electrical performance comparable to the distributed-element version but with significantly smaller surface area is described. The balanced design exploits the advantage of monolithic technology, and offers low conversion loss with comparable carrier suppression and unwanted sideband suppression. For this design, the carrier frequency was 6.9 GHz and the modulating signal was in the range of 0 to 500 MHz. Therefore, the lower sideband was 6.4 to 6.9 GHz and the upper sideband was 6.9 to 7.4 GHz.<>