Proposed tandem 3 dB hybrid coupler.
Schematic diagram single 8.34 dB coupled strip line.
Strip line with off-set rectangular strip.
Final dimension of the coupled and non-coupled line sections.
HFSS optimized design results and the measured S-parameters without compensation.
U-shaped coupled strip line and equivalent circuit diagram.
Equivalent circuit diagram of strip line of tandem coupler.
Analytic comparison of isolation of compensated and uncompensated hybrid coupler.
Photograph of the fabricated hybrid coupler.
Comparison of HFSS optimized design results, the measured S-parameters without compensation and with compensation.
Schematic diagram of high power test setup.
Measured voltage waveforms at coupled and output port at 1.0 kW input.
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