Title :
A 240 GHz Fully Integrated Wideband QPSK Transmitter in 65 nm CMOS
Author :
Shinwon Kang ; Thyagarajan, Siva V. ; Niknejad, Ali M.
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Univ. of California at Berkeley, Berkeley, CA, USA
Abstract :
In this paper, a 240 GHz 16 Gbps QPSK transmitter is demonstrated in 65 nm bulk CMOS process. The transmitter chain employs an 80 GHz local oscillator and a modulator to generate the data that is amplified by a class-E switching power amplifier. The amplified signal then drives the 240 GHz tripler to generate the required modulated data. By using on-chip slotted loop antennas, the transmitter achieves an EIRP of 1 dBm. A maximum data rate of 16 Gbps is achieved with a transmitter efficiency of 14 pJ/bit.
Keywords :
loop antennas; power amplifiers; quadrature phase shift keying; bulk CMOS process; class-E switching power amplifier; frequency 240 GHz; frequency 80 GHz; fully integrated wideband QPSK transmitter; local oscillator; on-chip slotted loop antennas; Binary phase shift keying; Frequency modulation; Phase noise; Transmitters; 240 GHz; 80 GHz LO; BPSK; PRBS generator; QPSK; architecture; class-E power amplifier; communication system; differential hybrid; energy efficiency; frequency tripler; high data rate; modulator; on-chip slotted loop antenna; sub-millimeter-wave; sub-terahertz; transmitter; wideband;
Journal_Title :
Solid-State Circuits, IEEE Journal of
DOI :
10.1109/JSSC.2015.2467179
