Zobrazeno 1 - 10
of 260
pro vyhledávání: '"Tah Hsiung Chu"'
Autor:
Yi-Chen Lin, Chung-Yi Yu, Chung-Min Li, Chin-Heng Liu, Jiun-Peng Chen, Tah-Hsiung Chu, Guo-Dung John Su
Publikováno v:
Sensors, Vol 14, Iss 1, Pp 834-847 (2014)
In this paper, a new application of an electro-active-polymer for a radio frequency (RF) switch is presented. We used an ionic polymer metallic composite (IPMC) switch to change the operating frequency of an inverted-F antenna. This switch is light i
Externí odkaz:
https://doaj.org/article/1debf74871be4a919b899c57e089143f
Autor:
Tah-Hsiung Chu, Yen-Chung Lin
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 63:2343-2352
This paper describes the approach to reconstruct the scattering matrix ( $S$ -matrix) of a multiport network from a set of one-port measurements. Formulation of reconstruction including the use of auxiliary circuits is given to solve the $S$ -matrix
Autor:
Yen-Chung Lin, Tah-Hsiung Chu
Publikováno v:
IEEE Microwave and Wireless Components Letters. 26:753-755
This letter describes a measurement technique to reconstruct the scattering parameters of an amplifier from five one-port measured results. Formulation of reconstruction with the use of auxiliary circuits is given. The criterion in selecting the auxi
Autor:
Tah-Hsiung Chu, Wei-Chiang Lee
Publikováno v:
IEEE Microwave and Wireless Components Letters. 25:205-207
This letter presents a circuit modeling approach to analyze the scattering parameter and spatial voltage distribution of a planar nine-way metamaterial power-divider/combiner structure. The analysis is based on the multi-input and multi-output transm
Autor:
Tah-Hsiung Chu, Wei-Chiang Lee
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 61:2414-2424
In this paper, a planar nine-way metamaterial power-combined amplifier implemented with microstrip grids, lumped capacitors and inductors, and power amplifiers is presented. The power-dividing/combining structure is a metamaterial lens composed of po
Autor:
Tah-Hsiung Chu, Yen-Chung Lin
Publikováno v:
2016 Asia-Pacific Microwave Conference (APMC).
This paper describes a measurement technique to reconstruct the two-port scattering parameters of an amplifier from five one-port results measured by a vector network analyzer (VNA). Formulation on the use of auxiliary circuits and one-port VNA is gi
Autor:
Tah-Hsiung Chu, Rong-Fa Kuo
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 59:3108-3117
An analytical approach to unconditional and conditional instabilities of a three-port network is presented herein. This approach begins with inequality expressions of the input reflection coefficients Γin and Γout of a three-port network defined at
Autor:
Chih-Jung Chen, Tah-Hsiung Chu
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 59:2331-2339
S-matrix reconstruction transforms are based on two stages of matrix transformation to remove the mismatch-induced errors. Over the years, these transforms are widely used in measurements of multiport devices using a two-port vector network analyzer,
Autor:
Tah-Hsiung Chu, Chih-Jung Chen
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 58:1724-1733
A 60-GHz substrate integrated waveguide Butler matrix designed based on a systematic approach is fabricated by a standard single-layer print circuit board process, which is more economical for mass production than are the advanced processes such as l
Autor:
Tah-Hsiung Chu, Rong-Fa Kuo
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 58:363-371
An analytical approach for acquiring the explicit expressions of the boundaries concerning the unconditional stability regions of a three-port network is presented. This approach begins with the expressions for the input reflection coefficients S 11