Work

An integrated miniaturized self-biased circulator based on the low-temperature D2W bonding technique

Year: 2025

Type: article

Abstract: A high-quality, high-yield integration of oriented M-type thick ferrite film with a SiC substrate through a simple and robust low-temperature thermocompression bonding technique is reported, solving the issue that ferrite devices, particularly ferrite circulators, cannot be integrated with planar RF circuits. Based on this bonding technique, a miniaturized self-biased circulator is successfully integrated onto a SiC substrate. This circulator, measuring 3.0 mm × 2.8 mm and operating at 35 GHz, exhibits a relatively low insertion loss of 1.2 dB, a bandwidth of 2.5 GHz, and a maximum isolation of 17 dB.

Source: IEICE Electronics Express

DOI: 10.1587/elex.22.20250182

Authors: Haoran Wang, Tao Zhang, Chongmei Peng, Zhaohui Chen

Institutions: Institute of Microelectronics, University of Chinese Academy of Sciences, Southeast University, Southeast University

Language: English

Topic: Microwave Engineering and Waveguides

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Industry, innovation and infrastructure

Open Access status: diamond

OpenAlex ID: W4409632816

FWCI: 0.231

Cites: 32

Cited by: 1

Related to: 10