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An on-off keying (OOK) modulator and demodulator operating at carrier frequency from 100 GHz to 150 GHz are designed and manufactured in a 0.25 μm InP DHBT Technology. The modulator is based on a switch controlled frequency quadrupler, which is driven by input data and a sinusoid signal source. A power detector consisting of a 4-way power divider and four identical active power detector units is proposed...
A D-band frequency quadrupler consisting of two cascaded push-push doublers is designed and manufactured in a 0.25 InP DHBT technology. Each doubler has a Marchand balun implemented by broadside-coupled transmission lines, folded in a rectangular shape. The second balun, operating at a half of output frequency, is located inside of the first one for minimizing the chip size. The frequency...
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