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Design and development of 3 dB patch compensated tandem hybrid coupler
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View: Figures


Image of FIG. 1.
FIG. 1.

Proposed tandem 3 dB hybrid coupler.

Image of FIG. 2.
FIG. 2.

Schematic diagram single 8.34 dB coupled strip line.

Image of FIG. 3.
FIG. 3.

Strip line with off-set rectangular strip.

Image of FIG. 4.
FIG. 4.

Final dimension of the coupled and non-coupled line sections.

Image of FIG. 5.
FIG. 5.

HFSS optimized design results and the measured S-parameters without compensation.

Image of FIG. 6.
FIG. 6.

U-shaped coupled strip line and equivalent circuit diagram.

Image of FIG. 7.
FIG. 7.

Equivalent circuit diagram of strip line of tandem coupler.

Image of FIG. 8.
FIG. 8.

Analytic comparison of isolation of compensated and uncompensated hybrid coupler.

Image of FIG. 9.
FIG. 9.

Photograph of the fabricated hybrid coupler.

Image of FIG. 10.
FIG. 10.

Comparison of HFSS optimized design results, the measured S-parameters without compensation and with compensation.

Image of FIG. 11.
FIG. 11.

Schematic diagram of high power test setup.

Image of FIG. 12.
FIG. 12.

Measured voltage waveforms at coupled and output port at 1.0 kW input.


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Scitation: Design and development of 3 dB patch compensated tandem hybrid coupler