A novel compact planar crossover with simple design procedure

A novel planar crossover is proposed here to tackle the problem of RF-trace intersections. Analytical equations are derived based on the approach of even-odd mode analysis. Simulations are performed, and a crossover at 1 GHz is fabricated and measured as an example. The presented crossover has a bandwidth of 26.4% for 1 dB insertion loss and 20 dB isolation. Compared with the other designs, this planar crossover features wide bandwidth and compact configuration. Simultaneously, the proposed crossover has a simple design procedure, which makes the crossover convenient to design and fabricate.