A Compact Wideband Microstrip Crossover
Via-less microwave crossover using microstrip-CPW transitions in slotline propagation mode
A planar ultra-wideband balanced doubler
A Fully Tunable Two-Pole Bandpass Filter
A Compact Ultra-Wideband Bandpass Filter Based on Split-Mode Resonator
Development of a Broadband Coplanar Waveguide-to-Microstrip Transition With Vias