A novel 94-GHz MHMET-based diode mixer using a 3-dB tandem coupler

Mun Kyo Lee; Byeong Ok Lim; Sang Jin Lee; Dong Sik Ko; Sung Woon Moon; Dan An; Yong Hoh Kim; Sam Dong Kim; Hyun Chang Park; Jin Koo Rhee

doi:10.1109/LMWC.2008.2002466

A novel 94-GHz MHMET-based diode mixer using a 3-dB tandem coupler

Mun Kyo Lee, Byeong Ok Lim, Sang Jin Lee, Dong Sik Ko, Sung Woon Moon, Dan An, Yong Hoh Kim, Sam Dong Kim, Hyun Chang Park, Jin Koo Rhee

Department of Electronics & Electrical Engineering

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

12 Scopus citations

Abstract

We report a high-performance 94-GHz monolithic millimeter-wave integrated-circuit diode mixer using metamorphic high-electron mobility transistor (MHEMT) diodes and a coplanar waveguide tandem coupler. A novel single-balanced structure of diode mixer is proposed in this paper, where a 3-dB tandem coupler with two sections of parallel-coupled line and air-bridge crossover structures are used for wide frequency operation. The fabricated mixer exhibits excellent local oscillator-radio-frequency (LO-RF) isolation, greater than 30 dB, in the 5-GHz bandwidth of 91-96 GHz. A good conversion loss of 7.4 dB is measured at 94 GHz. The proposed MHEMT-based diode mixer shows superior LO-RF isolation and conversion loss to those of the W-band mixers reported to date.

Original language	English
Article number	4624628
Pages (from-to)	626-628
Number of pages	3
Journal	IEEE Microwave and Wireless Components Letters
Volume	18
Issue number	9
DOIs	https://doi.org/10.1109/LMWC.2008.2002466
State	Published - Sep 2008

Keywords

Coplanar waveguide (CPW)
Diode mixer
Metamorphic high-electron mobility transistors (MHEMTs)
Monolithic microwave integrated circuit (MMIC)
Tandem coupler
W-band

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10.1109/LMWC.2008.2002466

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title = "A novel 94-GHz MHMET-based diode mixer using a 3-dB tandem coupler",

abstract = "We report a high-performance 94-GHz monolithic millimeter-wave integrated-circuit diode mixer using metamorphic high-electron mobility transistor (MHEMT) diodes and a coplanar waveguide tandem coupler. A novel single-balanced structure of diode mixer is proposed in this paper, where a 3-dB tandem coupler with two sections of parallel-coupled line and air-bridge crossover structures are used for wide frequency operation. The fabricated mixer exhibits excellent local oscillator-radio-frequency (LO-RF) isolation, greater than 30 dB, in the 5-GHz bandwidth of 91-96 GHz. A good conversion loss of 7.4 dB is measured at 94 GHz. The proposed MHEMT-based diode mixer shows superior LO-RF isolation and conversion loss to those of the W-band mixers reported to date.",

keywords = "Coplanar waveguide (CPW), Diode mixer, Metamorphic high-electron mobility transistors (MHEMTs), Monolithic microwave integrated circuit (MMIC), Tandem coupler, W-band",

author = "Lee, {Mun Kyo} and Lim, {Byeong Ok} and Lee, {Sang Jin} and Ko, {Dong Sik} and Moon, {Sung Woon} and Dan An and Kim, {Yong Hoh} and Kim, {Sam Dong} and Park, {Hyun Chang} and Rhee, {Jin Koo}",

year = "2008",

month = sep,

doi = "10.1109/LMWC.2008.2002466",

language = "English",

volume = "18",

pages = "626--628",

journal = "IEEE Microwave and Wireless Components Letters",

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

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T1 - A novel 94-GHz MHMET-based diode mixer using a 3-dB tandem coupler

AU - Lee, Mun Kyo

AU - Lim, Byeong Ok

AU - Lee, Sang Jin

AU - Ko, Dong Sik

AU - Moon, Sung Woon

AU - An, Dan

AU - Kim, Yong Hoh

AU - Kim, Sam Dong

AU - Park, Hyun Chang

AU - Rhee, Jin Koo

PY - 2008/9

Y1 - 2008/9

N2 - We report a high-performance 94-GHz monolithic millimeter-wave integrated-circuit diode mixer using metamorphic high-electron mobility transistor (MHEMT) diodes and a coplanar waveguide tandem coupler. A novel single-balanced structure of diode mixer is proposed in this paper, where a 3-dB tandem coupler with two sections of parallel-coupled line and air-bridge crossover structures are used for wide frequency operation. The fabricated mixer exhibits excellent local oscillator-radio-frequency (LO-RF) isolation, greater than 30 dB, in the 5-GHz bandwidth of 91-96 GHz. A good conversion loss of 7.4 dB is measured at 94 GHz. The proposed MHEMT-based diode mixer shows superior LO-RF isolation and conversion loss to those of the W-band mixers reported to date.

AB - We report a high-performance 94-GHz monolithic millimeter-wave integrated-circuit diode mixer using metamorphic high-electron mobility transistor (MHEMT) diodes and a coplanar waveguide tandem coupler. A novel single-balanced structure of diode mixer is proposed in this paper, where a 3-dB tandem coupler with two sections of parallel-coupled line and air-bridge crossover structures are used for wide frequency operation. The fabricated mixer exhibits excellent local oscillator-radio-frequency (LO-RF) isolation, greater than 30 dB, in the 5-GHz bandwidth of 91-96 GHz. A good conversion loss of 7.4 dB is measured at 94 GHz. The proposed MHEMT-based diode mixer shows superior LO-RF isolation and conversion loss to those of the W-band mixers reported to date.

KW - Coplanar waveguide (CPW)

KW - Diode mixer

KW - Metamorphic high-electron mobility transistors (MHEMTs)

KW - Monolithic microwave integrated circuit (MMIC)

KW - Tandem coupler

KW - W-band

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DO - 10.1109/LMWC.2008.2002466

M3 - Article

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SN - 1531-1309

VL - 18

SP - 626

EP - 628

JO - IEEE Microwave and Wireless Components Letters

JF - IEEE Microwave and Wireless Components Letters

IS - 9

M1 - 4624628

ER -

A novel 94-GHz MHMET-based diode mixer using a 3-dB tandem coupler

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Keywords

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