A 335-GHz Subharmonic Quadrature Mixer MMIC Based on GaAs Schottky Diode Technology

Songzhuo Liu; Gang Gao; Bin Niu; Weihua Yu

doi:10.1109/LMWT.2025.3551334

A 335-GHz Subharmonic Quadrature Mixer MMIC Based on GaAs Schottky Diode Technology

Songzhuo Liu, Gang Gao, Bin Niu, Weihua Yu^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

This letter presents a 335-GHz quadrature mixer with monolithic microwave integrated circuit (MMIC) utilizing the GaAs Schottky diode technology. By using two identical double-sideband (DSB) subharmonic mixer units and a 90° phase shift line co-designed with an on-chip double-RF probe, a quadrature phase relationship downconversion is achieved on a single GaAs chip. The conversion loss of the mixer is approximately 16 dB in the 330–350-GHz frequency range. The amplitude imbalance is less than 3 dB within the 333–342-GHz range, while the phase imbalance is less than 10° in the 330–340-GHz range. The quadrature mixer exhibits a reasonable performance with an MMIC structure and the smallest chip area compared with mixers made by two substrates.

Original language	English
Pages (from-to)	714-717
Number of pages	4
Journal	IEEE Microwave and Wireless Technology Letters
Volume	35
Issue number	6
DOIs	http://doi.org/10.1109/LMWT.2025.3551334
Publication status	Published - 2025
Externally published	Yes

Keywords

Monolithic microwave integrated circuit (MMIC)
Schottky diodes
quadrature mixer

Access to Document

10.1109/LMWT.2025.3551334

Cite this

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title = "A 335-GHz Subharmonic Quadrature Mixer MMIC Based on GaAs Schottky Diode Technology",

abstract = "This letter presents a 335-GHz quadrature mixer with monolithic microwave integrated circuit (MMIC) utilizing the GaAs Schottky diode technology. By using two identical double-sideband (DSB) subharmonic mixer units and a 90° phase shift line co-designed with an on-chip double-RF probe, a quadrature phase relationship downconversion is achieved on a single GaAs chip. The conversion loss of the mixer is approximately 16 dB in the 330–350-GHz frequency range. The amplitude imbalance is less than 3 dB within the 333–342-GHz range, while the phase imbalance is less than 10° in the 330–340-GHz range. The quadrature mixer exhibits a reasonable performance with an MMIC structure and the smallest chip area compared with mixers made by two substrates.",

keywords = "Monolithic microwave integrated circuit (MMIC), Schottky diodes, quadrature mixer",

author = "Songzhuo Liu and Gang Gao and Bin Niu and Weihua Yu",

note = "Publisher Copyright: {\textcopyright} 2023 IEEE.",

year = "2025",

doi = "10.1109/LMWT.2025.3551334",

language = "English",

volume = "35",

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journal = "IEEE Microwave and Wireless Technology Letters",

issn = "2771-957X",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

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T1 - A 335-GHz Subharmonic Quadrature Mixer MMIC Based on GaAs Schottky Diode Technology

AU - Liu, Songzhuo

AU - Gao, Gang

AU - Niu, Bin

AU - Yu, Weihua

PY - 2025

Y1 - 2025

N2 - This letter presents a 335-GHz quadrature mixer with monolithic microwave integrated circuit (MMIC) utilizing the GaAs Schottky diode technology. By using two identical double-sideband (DSB) subharmonic mixer units and a 90° phase shift line co-designed with an on-chip double-RF probe, a quadrature phase relationship downconversion is achieved on a single GaAs chip. The conversion loss of the mixer is approximately 16 dB in the 330–350-GHz frequency range. The amplitude imbalance is less than 3 dB within the 333–342-GHz range, while the phase imbalance is less than 10° in the 330–340-GHz range. The quadrature mixer exhibits a reasonable performance with an MMIC structure and the smallest chip area compared with mixers made by two substrates.

AB - This letter presents a 335-GHz quadrature mixer with monolithic microwave integrated circuit (MMIC) utilizing the GaAs Schottky diode technology. By using two identical double-sideband (DSB) subharmonic mixer units and a 90° phase shift line co-designed with an on-chip double-RF probe, a quadrature phase relationship downconversion is achieved on a single GaAs chip. The conversion loss of the mixer is approximately 16 dB in the 330–350-GHz frequency range. The amplitude imbalance is less than 3 dB within the 333–342-GHz range, while the phase imbalance is less than 10° in the 330–340-GHz range. The quadrature mixer exhibits a reasonable performance with an MMIC structure and the smallest chip area compared with mixers made by two substrates.

KW - Monolithic microwave integrated circuit (MMIC)

KW - Schottky diodes

KW - quadrature mixer

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DO - 10.1109/LMWT.2025.3551334

M3 - Article

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SN - 2771-957X

VL - 35

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JO - IEEE Microwave and Wireless Technology Letters

JF - IEEE Microwave and Wireless Technology Letters

IS - 6

ER -

A 335-GHz Subharmonic Quadrature Mixer MMIC Based on GaAs Schottky Diode Technology

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