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Your search keyword '"Sun, Jwo-Shiun"' showing total 121 results
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121 results on '"Sun, Jwo-Shiun"'

8. 79-GHz SIW slot-coupled patch antenna array with low cross polarization and wide beamwidth.

Author

Su, Guan-Ren, Li, Eric S., Jin, Huayan, Hsu, Pei-Hsin, Sun, Jwo-Shiun, and Chin, Kuo-Sheng

Subjects
ROAD vehicle radar, ANTENNAS (Electronics), RADAR antennas, ANTENNA arrays
Abstract

A 79-GHz wide-beam patch antenna and 1×8 antenna array with low cross-polarization levels are presented for automotive radar applications. A substrate-integrated-waveguide slot-coupled scheme was employed to reduce the cross-polarization level of the patch antenna. Two parasitic elements were added to the main patch to form a three-element subarray for beamwidth enhancement. The simulated E-plane half-power beamwidth (HPBW) of the patch antenna is 148°, and the cross-polarization level is 32.5 dB less than the co-polarization level at the boresight direction. For further gain enhancement, a 1×8 patch array was designed and fabricated. The measured results show that the proposed design can offer a wide HPBW of 144° and a low cross-polarization level of 28.3 dB less than the co-polarization level at 79 GHz. [ABSTRACT FROM AUTHOR]

Published
2023
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27. Design and analysis of microwave varactor-tuned oscillators

Author

Sun, Jwo-Shiun

Subjects
Microwave oscillators -- Design and construction, Business, Electronics and electrical industries, Engineering and manufacturing industries, Telecommunications industry, Design and construction
Abstract

Wideband tunable oscillators with fast tuning speed are important components in many communication systems. Different kinds of high frequency tunable oscillators have been studied by many authors,[1-10] Yttrium iron garnet [...]

Published
1999

28. Design and implementation of an L-band PLL frequency synthesizer

Author

Sun, Jwo-Shiun, Tiong, Kwong-Kau, and Liu, Jiann-Hwang

Subjects
Phase-locked loops -- Usage, Frequency synthesizers -- Design and construction -- Usage, Business, Electronics and electrical industries, Engineering and manufacturing industries, Telecommunications industry, Design and construction, Usage
Abstract

In 1932, De Bellescize published his synchronized detection theory and described the PLL for the first time. In 1947, a PLL design was first applied in synchronize scanning of a [...]

Published
1999

29. A highly stabilized GaAs FET reflection-type oscillator with a dielectric resonator in the X-band

Author

Sun, Jwo-Shiun and Wei, Chung-Chuang

Subjects
Microwave oscillators -- Design and construction, Business, Electronics and electrical industries, Engineering and manufacturing industries, Telecommunications industry, Design and construction
Abstract

A reflection-type dielectric resonator oscillator (RTDRO) that provides a highly stable, low phase described. Numerical simulation providing an optimum aspect ratio (diameter/height) range of a cylin resonator (DR) is investigated [...]

Published
1992

30. Iterative method provides accurate resonator analysis; computer-simulation results indicate a 1-percent error with respect to measured DR parameters

Author

Sun, Jwo-Shiun and Wei, Chung-Chuang

Subjects
Microwave circuits -- Models, Telecommunications equipment industry -- Analysis, Iterative methods (Mathematics) -- Usage, Dielectric resonators -- Analysis, Business, Electronics and electrical industries, Engineering and manufacturing industries
Abstract

ITERATIVE METHOD PROVIDES ACCURATE RESONATOR ANALYSIS Computer-simulation results indicate a 1-percent error with respect to measured DR parameters. RECENT improvements in temperature-stable dielectric resonators (DRs)[1,2] provide these devices with low [...]

Published
1991

45. DESIGN OF A PLANAR MICROSTRIP BALUN AT S-BAND

Author

SUN, JWO-SHIUN and LEE, TSUNG-LIN

Subjects
Electronic components industry -- Product information, Microwave circuits -- Design and construction -- Product information, Business, Electronics and electrical industries, Engineering and manufacturing industries, Telecommunications industry, Design and construction, Product information
Abstract

An innovation for the Marchand balun model is presented. The structure of the designed planar microstrip matching circuit is fairly simple, practical and easily fabricated without requiring complex multiple metal [...]

Published
2001

46. 3D FEM AND EM SIMULATIONS FOR DRFS

Author

SUN, JWO-SHIUN and HSIEH, JIER-CHIH

Subjects
Microwave devices -- Product information, Electronic components industry -- Product information, Business, Electronics and electrical industries, Engineering and manufacturing industries, Telecommunications industry, Product information
Abstract

Three-dimensional (3D) fullwave analysis of a microwave dielectric resonator filter (DRF) in a rectangular metallic enclosure is presented. By using a 3D finite-element method (FEM) to perform numerical simulations, parameters [...]

Published
2000

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