IEICE TRANSACTIONS on Fundamentals
The Structures of CPW PHEMT's for Applications of Millimeter-Waves
Summary :
The parasitic capacitances induced in the spaces between an air-bridge interconnection and a drain pad (Cad), and between an air-bridge interconnection and a gate head (Cag) from a power CPW PHEMT are not negligible. In this paper, a modified equivalent circuit model for a CPW PHEMT and an improved CPW PHEMT for millimeter-wave applications are proposed. These were proved by measuring the fabricated CPW PHEMT and improved CPW PHEMT. These capacitances were confirmed by measuring the gate-source coupling using CPW PHEMT patterns without an active layer. From the measurements, the improved CPW PHEMT has the lowest coupling (loss) and the highest S21 gain among four different types tested at 60 GHz. And the improved CPW PHEMT is a feasible device which can be directly applied in millimeter-waves as a power device.
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- IEICE TRANSACTIONS on Fundamentals Vol.E87-A No.6 pp.1323-1329
- Publication Date
- 2004/06/01
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- Special Section PAPER (Special Section on Papers Selected from 2003 International Technical Conference on Circuits/Systems, Computers and Communications (ITC-CSCC 2003))
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Byeong-Ok LIM, Tae-Shin KANG, Bok-Hyung LEE, Mun-Kyo LEE, Jin-Koo RHEE, "The Structures of CPW PHEMT's for Applications of Millimeter-Waves" in IEICE TRANSACTIONS on Fundamentals,
vol. E87-A, no. 6, pp. 1323-1329, June 2004, doi: .
Abstract: The parasitic capacitances induced in the spaces between an air-bridge interconnection and a drain pad (Cad), and between an air-bridge interconnection and a gate head (Cag) from a power CPW PHEMT are not negligible. In this paper, a modified equivalent circuit model for a CPW PHEMT and an improved CPW PHEMT for millimeter-wave applications are proposed. These were proved by measuring the fabricated CPW PHEMT and improved CPW PHEMT. These capacitances were confirmed by measuring the gate-source coupling using CPW PHEMT patterns without an active layer. From the measurements, the improved CPW PHEMT has the lowest coupling (loss) and the highest S21 gain among four different types tested at 60 GHz. And the improved CPW PHEMT is a feasible device which can be directly applied in millimeter-waves as a power device.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1587/e87-a_6_1323/_p
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@ARTICLE{e87-a_6_1323,
author={Byeong-Ok LIM, Tae-Shin KANG, Bok-Hyung LEE, Mun-Kyo LEE, Jin-Koo RHEE, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={The Structures of CPW PHEMT's for Applications of Millimeter-Waves},
year={2004},
volume={E87-A},
number={6},
pages={1323-1329},
abstract={The parasitic capacitances induced in the spaces between an air-bridge interconnection and a drain pad (Cad), and between an air-bridge interconnection and a gate head (Cag) from a power CPW PHEMT are not negligible. In this paper, a modified equivalent circuit model for a CPW PHEMT and an improved CPW PHEMT for millimeter-wave applications are proposed. These were proved by measuring the fabricated CPW PHEMT and improved CPW PHEMT. These capacitances were confirmed by measuring the gate-source coupling using CPW PHEMT patterns without an active layer. From the measurements, the improved CPW PHEMT has the lowest coupling (loss) and the highest S21 gain among four different types tested at 60 GHz. And the improved CPW PHEMT is a feasible device which can be directly applied in millimeter-waves as a power device.},
keywords={},
doi={},
ISSN={},
month={June},}
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TY - JOUR
TI - The Structures of CPW PHEMT's for Applications of Millimeter-Waves
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 1323
EP - 1329
AU - Byeong-Ok LIM
AU - Tae-Shin KANG
AU - Bok-Hyung LEE
AU - Mun-Kyo LEE
AU - Jin-Koo RHEE
PY - 2004
DO -
JO - IEICE TRANSACTIONS on Fundamentals
SN -
VL - E87-A
IS - 6
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - June 2004
AB - The parasitic capacitances induced in the spaces between an air-bridge interconnection and a drain pad (Cad), and between an air-bridge interconnection and a gate head (Cag) from a power CPW PHEMT are not negligible. In this paper, a modified equivalent circuit model for a CPW PHEMT and an improved CPW PHEMT for millimeter-wave applications are proposed. These were proved by measuring the fabricated CPW PHEMT and improved CPW PHEMT. These capacitances were confirmed by measuring the gate-source coupling using CPW PHEMT patterns without an active layer. From the measurements, the improved CPW PHEMT has the lowest coupling (loss) and the highest S21 gain among four different types tested at 60 GHz. And the improved CPW PHEMT is a feasible device which can be directly applied in millimeter-waves as a power device.
ER -
English
