A $28-\text{nm}$ CMOS D-Band Passive Modulator Achieving 43-dB Image Rejection Ratio
Journal
2025 20th European Microwave Integrated Circuits Conference, EuMIC 2025
Start Page
363
End Page
366
ISBN (of the container)
978-287487082-8
ISBN
[9782874870828]
Date Issued
2025-11-14
Author(s)
Abstract
This paper presents a D-band sub-harmonic IQ modulator in 28-nm CMOS, achieving a 43 dB image rejection ratio (IRR) with zero DC power consumption. The design integrates a Lange coupler and stacked metal passive components to reduce insertion loss and enhance quadrature accuracy. The modulator achieves a conversion gain (CG) of -8 dB and an average IRR of 40 dB from 142 GHz to 152 GHz. Measurement results confirm that the proposed architecture effectively mitigates phase and amplitude mismatches, making it a promising candidate for high-frequency communication systems.
Event(s)
20th European Microwave Integrated Circuits Conference, EuMIC 2025
Subjects
balun
coupler
D-band
image rejection ratio
modulator
Publisher
IEEE
Type
conference paper