4.5-dB CMOS Forward Coupler Incorporating Asymmetric Left-Handed Coupled Lines at 430 GHz
Summary :
An asymmetric left-handed coupled-line is presented to implement the tight forward coupler. Two left-handed transmission lines are coupled through its shunt inductors. The numerical procedures based on the generalized four-port scattering parameters combined with the periodical boundary conditions are applied to extract the modal characteristics of the asymmetric coupled-line, and theoretically predict that the proposed coupled-line can make a normalized phase constant of c mode 1.57 times larger than π mode for the forward coupler miniaturization. The design curves based on different overlapping length of the shunt inductors are reported for the coupler design. The procedures, so-called the port-reduction-method (PRM), are applied to experimentally characterize the coupler prototype using the two-port instruments. The measured results confirm that prototype uses 0.21 λg at 430 GHz to achieve -4.55 dB forward coupling with 13% 1-dB operating bandwidth.
- Publication
- IEICE TRANSACTIONS on Electronics Vol.E99-C No.7 pp.849-855
- Publication Date
- 2016/07/01
- Publicized
- Online ISSN
- 1745-1353
- DOI
- 10.1587/transele.E99.C.849
- Type of Manuscript
- PAPER
- Category
- Microwaves, Millimeter-Waves
Authors
GuangFu LI
Tianjin University
Hsien-Shun WU
Tianjin University
Ching-Kuang C. TZUANG
Millimeter-Wave and Terahertz Technologies Transcend Research Center
Keyword
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GuangFu LI, Hsien-Shun WU, Ching-Kuang C. TZUANG, "4.5-dB CMOS Forward Coupler Incorporating Asymmetric Left-Handed Coupled Lines at 430 GHz" in IEICE TRANSACTIONS on Electronics,
vol. E99-C, no. 7, pp. 849-855, July 2016, doi: 10.1587/transele.E99.C.849.
Abstract: An asymmetric left-handed coupled-line is presented to implement the tight forward coupler. Two left-handed transmission lines are coupled through its shunt inductors. The numerical procedures based on the generalized four-port scattering parameters combined with the periodical boundary conditions are applied to extract the modal characteristics of the asymmetric coupled-line, and theoretically predict that the proposed coupled-line can make a normalized phase constant of c mode 1.57 times larger than π mode for the forward coupler miniaturization. The design curves based on different overlapping length of the shunt inductors are reported for the coupler design. The procedures, so-called the port-reduction-method (PRM), are applied to experimentally characterize the coupler prototype using the two-port instruments. The measured results confirm that prototype uses 0.21 λg at 430 GHz to achieve -4.55 dB forward coupling with 13% 1-dB operating bandwidth.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/transele.E99.C.849/_p
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@ARTICLE{e99-c_7_849,
author={GuangFu LI, Hsien-Shun WU, Ching-Kuang C. TZUANG, },
journal={IEICE TRANSACTIONS on Electronics},
title={4.5-dB CMOS Forward Coupler Incorporating Asymmetric Left-Handed Coupled Lines at 430 GHz},
year={2016},
volume={E99-C},
number={7},
pages={849-855},
abstract={An asymmetric left-handed coupled-line is presented to implement the tight forward coupler. Two left-handed transmission lines are coupled through its shunt inductors. The numerical procedures based on the generalized four-port scattering parameters combined with the periodical boundary conditions are applied to extract the modal characteristics of the asymmetric coupled-line, and theoretically predict that the proposed coupled-line can make a normalized phase constant of c mode 1.57 times larger than π mode for the forward coupler miniaturization. The design curves based on different overlapping length of the shunt inductors are reported for the coupler design. The procedures, so-called the port-reduction-method (PRM), are applied to experimentally characterize the coupler prototype using the two-port instruments. The measured results confirm that prototype uses 0.21 λg at 430 GHz to achieve -4.55 dB forward coupling with 13% 1-dB operating bandwidth.},
keywords={},
doi={10.1587/transele.E99.C.849},
ISSN={1745-1353},
month={July},}
Copy
TY - JOUR
TI - 4.5-dB CMOS Forward Coupler Incorporating Asymmetric Left-Handed Coupled Lines at 430 GHz
T2 - IEICE TRANSACTIONS on Electronics
SP - 849
EP - 855
AU - GuangFu LI
AU - Hsien-Shun WU
AU - Ching-Kuang C. TZUANG
PY - 2016
DO - 10.1587/transele.E99.C.849
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E99-C
IS - 7
JA - IEICE TRANSACTIONS on Electronics
Y1 - July 2016
AB - An asymmetric left-handed coupled-line is presented to implement the tight forward coupler. Two left-handed transmission lines are coupled through its shunt inductors. The numerical procedures based on the generalized four-port scattering parameters combined with the periodical boundary conditions are applied to extract the modal characteristics of the asymmetric coupled-line, and theoretically predict that the proposed coupled-line can make a normalized phase constant of c mode 1.57 times larger than π mode for the forward coupler miniaturization. The design curves based on different overlapping length of the shunt inductors are reported for the coupler design. The procedures, so-called the port-reduction-method (PRM), are applied to experimentally characterize the coupler prototype using the two-port instruments. The measured results confirm that prototype uses 0.21 λg at 430 GHz to achieve -4.55 dB forward coupling with 13% 1-dB operating bandwidth.
ER -
English
