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Your search keyword '"Lin, Yi-Fang"' showing total 9 results
Start Over Author "Lin, Yi-Fang" Journal ieee transactions on antennas and propagation
9 results on '"Lin, Yi-Fang"'

2. Planar inverted-L antenna with a dielectric resonator feed in a mobile device

Author

Lin, Yi-Fang, Chen, Hua-Ming, Lin, Che-Yen, and Pan, Shan-Cheng

Subjects
Antennas (Electronics) -- Design and construction, Mobile devices -- Design and construction, Dielectric resonators -- Design and construction, Business, Computers, Electronics, Electronics and electrical industries
Published
2009

3. Microstrip-fed circularly polarized square-ring patch antenna for GPS applications

Author

Chen, Hua-Ming, Wang, Yang-Kai, Lin, Yi-Fang, Lin, Che-Yen, and Pan, Shan-Cheng

Subjects
Antennas (Electronics) -- Design and construction, Global Positioning System -- Equipment and supplies, Dielectrics -- Usage, Dielectrics -- Properties, Electromagnetic waves -- Polarization, Electromagnetic waves -- Observations, Global Positioning System, Business, Computers, Electronics, Electronics and electrical industries
Abstract

A novel coupling technique for circularly polarized square-ring patch antenna is developed and discussed. The circular polarization (CP) radiation of the square-ring patch antenna is achieved by a simple microstrip feed line through the coupling of a square patch on the same plane of the antenna. Proper positioning of the coupling square patch excites two orthogonal resonant modes with 90[degrees] phase difference, and a pure circular polarization is obtained. The dielectric material is a square block of ceramic with a permittivity of 58 and that reduces the size of the antenna. The prototype has been designed, fabricated and found to have an impedance bandwidth of 1.1% and a 3-dB axial-ratio bandwidth of about 0.03 % at GPS frequency of 1573 MHz. The characteristics of the proposed antenna have been studied by simulation software HFSS and experiments. The measured and simulated results are in good agreement. Index Terms--Ceramic dielectric material, circular polarization (CP), global position system (GPS), square-ring patch antenna.

Published
2009

4. A new coupling mechanism for circularly polarized annular-ring patch antenna

Author

Lin, Yi-Fang, Chen, Hua-Ming, and Lin, Shih-Chieh

Subjects
Antennas (Electronics) -- Design and construction, Dielectrics -- Properties, Business, Computers, Electronics, Electronics and electrical industries
Abstract

A novel coupling technique for circularly polarized annular-ring patch antenna is developed and discussed. The circular polarization (CP) radiation of the annular-ring patch antenna is achieved by a simple microstrip feed line through the coupling of a fan-shaped patch on the same plane of the antenna. Proper positioning of the coupling fan-shaped patch excites two orthogonal resonant modes with 90[degrees] phase difference, and a pure circular polarization is obtained. The dielectric material is a cylindrical block of ceramic with a permittivity of 25 and that reduces the size of the antenna. The prototype has been designed and fabricated and found to have an impedance bandwidth of 2.3% and a 3 dB axial-ratio bandwidth of about 0.6% at the center frequency of 2700 MHz. The characteristics of the proposed antenna have been by simulation software HFSS and experiment. The measured and simulated results are in good agreement. Index Terms--Annular-ring patch antenna, ceramic dielectric material, circular polarization (CP), patch coupling.

Published
2008

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