NETWORK FOR HIGH EFFICIENCY POWER COMBINING WITH BETTER THAN 82% COMBINING EFFICIENCY

A compact coupler network for combining six high efficiency HBT power MMICs has demonstrated an 82% minimum combining efficiency (0.85 dB). typically greater than 87% (0.6 dB), over an 8.0 to 14.0 GHz frequency band. The combining network is a two-tier "vertically stacked" multilayer Low Temperature Cofired Ceramic (L TCC) stripline assembly and was desi!lned with the aid of