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The defense date of the thesis is 2015-08-24
The current date is 2019-03-21
URN etd-0824115-131507 Statistics This thesis had been viewed 251 times. Download 0 times. Author Guo-Mao Hsu Author's Email Address No Public. Department Communication Engineering Year 2014 Semester 2 Degree Master Type of Document Master's Thesis Language zh-TW.Big5 Chinese Page Count 43 Title SIMPLIFIED CPW-FED BROADBAND ANTENNA INVOLVING THE ZEROTH ORDER MODE Keyword ZOR antenna epsilon negative transmission CPW-Fed Antenna compact antenna compact antenna CPW-Fed Antenna epsilon negative transmission ZOR antenna Abstract This thesis describes the broadband antenna which is fed with the simplified coplanar waveguide (CPW) in the zeroth order mode, and is based on CRLH-TL (composite right/left handed transmission line ) theory.
It is built on the upper surface of an FR4 substrate with thickness of 1.6 mm. A straight shorted strip is connected between the center conductor and the ground plane as a loaded parallel element.
To increase the parallel inductance and to save some space, the straight strip can be replaced by a meandered strip. This straight strip will excite the resonance frequency.
The measured results show that the fractional bandwidth is extended up to 90% and radiation efficiencies of the ZOR (zeroth-order resonance)，FOR (first-order resonance) and SOR (second-order resonance) are 82.9%，93% and 77.8% respectively.
In the 10 dB return-loss bandwidth can cover from 1.8GHz to 4.9GHz and the measured peak gain is between 2.9 and 4.5 dB .
Advisor Committee The-Nan Chang - advisor
Chun-Ming Lin - co-chair
Yen-Sheng Chen - co-chair
Files Date of Defense 2015-07-07 Date of Submission 2015-08-24