Improved Equivalent Circuit Model of p-i-n Diodes for Amplitude and Phase Controllable mmWave Reconfigurable Intelligent Surfaces
Paper in proceeding, 2024

An improved equivalent circuit model (ECM) of p-i-n diodes is developed and applied to amplitude and phase controllable mmWave reconfigurable intelligent surfaces (RISs). The proposed ECM takes into account the variable junction resistance and capacitance of forward-biased p-i-n diodes in the transition state (instead of a conventional simplified resistance model) that is critical at mmWave frequencies. The flip-chip AlGaAs p-i-n diodes have been characterized in a 2-port coplanar measurement setup. Both the improved ECM and the electromagnetic model are constructed and validated. The ECM is used for a 28-GHz RIS design with amplitude and phase control of the reflection coefficient. The observed non-linear performance combined with an additional phase shift of up to 84° introduced by the variable junction capacitance indicates the value of the proposed model.

Author

Yuqing Zhu

Chalmers, Electrical Engineering, Communication, Antennas and Optical Networks

Artem Vilenskiy

Chalmers, Electrical Engineering, Communication, Antennas and Optical Networks

Oleg Iupikov

Chalmers, Electrical Engineering, Communication, Antennas and Optical Networks

Pavlo Krasov

Chalmers, Electrical Engineering, Communication, Antennas and Optical Networks

Thomas Emanuelsson

Ericsson

Gregor Lasser

Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics

Marianna Ivashina

Chalmers, Electrical Engineering, Communication, Antennas and Optical Networks

Published in

IEEE Antennas and Propagation Society, AP-S International Symposium (Digest)

15223965 (ISSN)

p. 1583-1584
9798350369908 (ISBN)

Conference

2024 IEEE International Symposium on Antennas and Propagation and INC/USNCURSI Radio Science Meeting, AP-S/INC-USNC-URSI 2024
Florence, Italy, 2024-07-13 - 2024-07-18

Categorizing

Subject Categories

Telecommunications

Identifiers

DOI

10.1109/AP-S/INC-USNC-URSI52054.2024.10686865

More information

Latest update

11/6/2024