Paper Info
Title
A CMOS Two-Element 170-GHz Fundamental-Frequency Transmitter With Direct RF-8PSK Modulation
Abstract
A CMOS 170-GHz fundamental-frequency transmitter (TX) realizing the 8PSK modulation scheme directly in the RF domain is presented. The use of direct RF modulation obviates the need for high-resolution high-speed mixed-signal blocks. The proposed architecture extends the conventional quadrature modulation by performing additional phase modulation on I and Q components of the LO signal, which helps increase modulation order. The TX employs high-speed switchable phase shifters to achieve LO phase modulation and fundamental-frequency over-neutralized power amplifiers to drive an integrated two-element tapered dipole antenna array. Fabricated in a 65-nm CMOS process ( <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$f_{T}/f_{\text {max}} = 230$ </tex-math></inline-formula> /260 GHz), the RF-8PSK TX prototype occupies <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$3.2 \times 2.8$ </tex-math></inline-formula> mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> of die area. The free-space wireless measurement of the TX over a 10-cm link range yields 15 Gb/s data rate at an error vector magnitude (EVM) of −14.8 dB. The TX achieves an EIRP of 4 dBm while consuming 560-mW power.
Year
DOI
Venue
2020
10.1109/JSSC.2019.2945263
IEEE Journal of Solid-State Circuits
Keywords
Field
DocType
Radio frequency,Mixers,Frequency modulation,Wireless communication,Phase shift keying
Transmitter,Fundamental frequency,Computer science,CMOS,Modulation,Electronic engineering,Phase-shift keying
Journal
Volume
Issue
ISSN
55
2
0018-9200
Citations 
PageRank 
References 
4
0.42
0
Authors
3
Name
Order
Citations
PageRank
Peyman Nazari1484.66
Saman Jafarlou2142.34
Payam Heydari364975.49