A Compact 130-GHz CMOS OOK-Doubler With Embedded 10-Gb/s Modulator and Integrated Glass Antenna for Scalable Array Systems and Efficient Short-Range Communication

This letter presents a
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-band on–off keying (OOK)-doubler that uses a balanced push–push design with an integrated switch at its common node (CN) for second harmonic modulation. The input impedance of the proposed modulator remains almost constant with less than 1% mismatch during the switching states of direct modulation, making it best candidate for scalable switched array with fast settling time. The design of the circuit is realized using 65-nm CMOS TSMC process, featuring a compact size. It is heterogeneously combined with a glass antenna that employs General Electric’s technology, achieving a gain of 6 dBi. The integrated OOK-doubler and glass antenna achieves up to 10-Gb/s data rate over 7 cm, with BER less than 10−6. The chip consumes 11–14-mW dc power with a saturated power of −2 dBm.