Wideband Balanced Frequency Doublers - A Proposed Novel Planar MIC Structure

Wideband microwave frequency doublers employing beam-lead Schottky barrier diodes in a new planar balun configuration are presented. Measurement results for output frequencies up to the K-band show good agreement with simulated results. A conversion loss less than 8.5 dB and an output frequency ratio exceeding 1 : 3 were achieved. Further a novel facility to combine the doubler with a pin-diode series switch is proposed. The low-cost, small-sized multipliers can be integrated into complex hybrid systems, e.g. to provide selectable local oscillator sources for a fundamental mixer in broadband measurment instrumentation.