60 GHz Analog Radio-Over-Fiber Single Sideband Transmitter Chipset With 55nm SiGe BiCMOS Driver RFIC and Silicon Photonics Modulator PIC

Abstract

An all-silicon transmitter chipset is presented for narrowband operation in the unlicensed 60 GHz band. The PIC consists of parallel electro-absorption modulators and thermo-optic phase shifters which are driven with both in-phase and quadrature components by the RFIC. A sideband suppression ratio of 25 dB is demonstrated with a full chipset size of 1.1 mm 2 and a power consumption of 45 mW. Link experiments are conducted with QAM signals.

A compact SiGe D-band power amplifier for scalable photonic-enabled phased antenna arrays

“…The inclusion of optical components is already prevalent in existing radio systems in the form of radio-over-fiber (RoF). Here, optical fiber infrastructure is used to distribute radio signals from a central office (CO) to remote radio units (RRUs) [16][17][18] . Moving to such a partially optical system allows us to leverage the wide gamut of optical components and techniques such as extremely low-loss signal distribution, true-time delay (TTD) beamforming or even on-chip optical modulation to overcome the issues faced in an all-electrical approach [19][20][21] .…”