A comparative simulation study of component variation eqects onwideband 90° phase-shifter circuits has been presented. Sixth order circuitswith relative bandwidth of l00 are investigated. RC polyphase Alters, RC bridge type90o phase-shifters,and conventional LC phase splitter are compared in terms of phase errorand amplitude error in 90° phase-shifter from component variation point of view. It is shown that RC polyphase filter is best suited for wideband 90° phase-shifter in view of its manufacturability and component variation resistance.
展开▼
