[C-12] Integrated Circuit and Devices

1:15 PM - 1:30 PM JST(4:15 AM - 4:30 AM UTC)

[C-12-23] Design of a Ka-Band Low-Noise Amplifier for Radio-over-Fiber Wireless Receiver Front-End

〇ZIBO WANG¹, Zolboo Byambadorj², Yuto Miyatake¹, Sota Kano¹, Tetsuya Iizuka¹ (1. Department of Electrical Engineering and Information Systems, School of Engineering, The University of Tokyo, 2. Systems Design Lab., School of Engineering, The University of Tokyo)

Keywords:

Low-noise-amplifier (LNA),Radio-over-Fiber (RoF) application,On-chip transformer

Ka-band communication can offer a wide bandwidth and a high data rate. However, it suffers from serious propagation loss, rain attenuation, and blockage. Radio-over-Fiber (RoF) uses low loss optical fiber for signal distribution to reduce loss during long-distance wireless transmission. To support receiver front-ends for RoF applications, this presentation introduces a 25.7➖34.2-GHz low-noise-amplifier (LNA) for driving a Mach–Zehnder modulator (MZM) driver in 28-nm CMOS. The design features a small chip area and relatively high IP1dB (1dB compression point) for high output swing requirement from RoF applications. Post-layout simulation results demonstrate 11.9dB peak gain, 8.5GHz 3-dB bandwidth, 2.59–3.72dB noise figure within the operating frequency range, and -6.7dBm IP1dB. It consumes 16.1mW of power from a 0.9V supply voltage, and occupies a core area of 0.097mm².