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Resonant Antennas Based On Coupled Transmission-Line Metamaterials, Christopher S. Merola
Resonant Antennas Based On Coupled Transmission-Line Metamaterials, Christopher S. Merola
Masters Theses 1911 - February 2014
A novel microstrip patch antenna topology is presented for achieving a dual-band response with arbitrarily closely spaced resonances. This topology is based on a coupled transmission line structure in order to take advantage of the separation in propagation constants for parallel (even-mode) and anti-parallel (odd-mode) current modes. Applying a metamaterials inspired design approach, periodic reactive loadings are used to design the underlying transmission line to have specific propagation constants necessary to realize a desired separation between two resonant frequencies. Using a single probe feed for a finite coupled line segment, both even-and odd-mode resonances can be excited to radiate efficiently …
Miniaturization Of Microstrip Patch Antennas For Gps Applications, Steven S. Holland
Miniaturization Of Microstrip Patch Antennas For Gps Applications, Steven S. Holland
Masters Theses 1911 - February 2014
The desire to incorporate multiple frequency bands of operation into personal communication devices has led to much research on reducing the size of antennas while maintaining adequate performance. GPS is one such application, where dual frequency operation, bandwidth and circular polarization pose major challenges when using traditional miniaturization techniques. Various loading methods have been studied to reduce the resonant frequency of the antenna – high permittivity dielectric loading, slot loading and cavity loading – while examining their effects on bandwidth and gain. The objective of this thesis is to provide guidelines on what is achievable using these miniaturization methods and …