Five-way power divider based on dielectric resonator whispering-gallery modes

The use of whispering-gallery mode dielectric resonator (WGMDR) in the design of X-band 5-way power divider is presented. A combination of probe type of excitation integrated with microstrip technology are used to excite an H-polarized resonating mode around 10.85 GHz. For uniform power distribution, a cylindrical dielectric resonator is enclosed within a shielded cavity. Both input matching and equal power distribution are experimentally maintained within 200 MHz frequency band around the resonance. Measured scattering parameters magnitude and phase of the proposed 6-port structure are carried out to verify the expected simulation results.