Slow-Wave Microstrip Lines Using Ground Slots for Enhanced Impedance Control

초록

Straight microstrip lines alternately loaded with ground slots and open end stubs are analyzed Fabricated samples containing slots and stubs with various length combinations demonstrate constant slow wave factors of 1 7 to 3 0 with negligible amounts of radiation loss and larger characterstic impedance tuning range A slow wave band rejection filter at 1 8 GHz is built for performance comparison with a regular microstrip line filter

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