Work

Compact Millimeter-Wave Single- and Dual-Band On-Chip Bandpass Filters Using GaAs Technology

Year: 2025

Type: article

Abstract: In this paper, two compact on-chip bandpass filters (BPFs) at millimeter-wave frequencies, i.e., single-band BPF and dual-band BPF, are proposed in gallium arsenide (GaAs) technology. To understand the working mechanism of the single-band BPF, a transmission line (TL) equivalent circuit model is presented and analyzed to estimate the position of the transmission zeros (TZs). Based on the single-band BPF structure, two additional metallic strips on M1 layer are placed beneath the pair of meander strips to construct a dual-band BPF. Consequently, a dual-band frequency response can be realized by introducing two TZs within the passband. For demonstration, two prototypes of the BPF are fabricated and tested to validate the proposed idea, whose simulated and measured results are in good agreement. Both of the single-and dual-band BPFs have the same chip size of only 0.29 mm W 0.23 mm, excluding the feeding.

Source: IEEE Journal of the Electron Devices Society

DOI: 10.1109/jeds.2025.3588470

Authors: Yongzheng Li, Xiaoyu Weng, Kai-Da Xu

Institution: Xi'an Jiaotong University

Language: English

Topic: Microwave Engineering and Waveguides

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $1,350

Funders: National Natural Science Foundation of China, Chunhui Project Foundation of the Education Department of China, HORIZON EUROPE Marie Sklodowska-Curie Actions