AN_007_Manufacturers_1_12Application Note AN007 AN007 Manufactures of external components used with Chipcon RFICs by P. M. Evjen Keywords Component manufacturers Varactors Inductors Ceramic filters SAW filters Power amplifiers and switches Narrow band demodulators Discriminators VCO modules Introduction Although the RF IC’s provided by Chipcon are highly integrated, a few external components are required. This application note gives suggestions of manufacturers that provide these products. The most critical part of the design is usually the VCO tank. This application note gives suggestions for the varactor and the high-Q inductor. In very demanding applications the inductor can be replaced by a coaxial resonator to increase narrow band performance. SAW filters are used at the front end to improve the se……