Matches in SemOpenAlex for { <https://semopenalex.org/work/W2912113821> ?p ?o ?g. }
Showing items 1 to 75 of
75
with 100 items per page.
- W2912113821 abstract "Recently, there has been an increased demand for single systems that can handle different wireless communication applications simultaneously. Often, it is impractical to allocate multiple antennas to the same system, so multifunctional antennas are a critical necessity. Also, most existing frequency-reconfigurable antennas (FRA) are made from non-transparent materials, but a transparent antenna may be useful in scenarios where the antenna should not impair visibility. Furthermore, wideband-to-narrowband reconfigurability has potential for use in future cognitive radio systems. This thesis focuses on FRAs with wideband-tonarrowband reconfigurability that use transparent and non-transparent materials. The ultra-wideband antenna design uses an ellipse-shaped patch, thereby yielding a 7.77 GHz impedance bandwidth from 2.83 GHz to 10.66 GHz. The first FRA is obtained by introducing a pair of annular ring slots defected ground structure (DGS) resonator with metal switches. Its initial wideband operation mode from 3 GHz to 6 GHz can be reconfigured into six additional bandwidth modes with a dual-band operation centred at 3.7 GHz and 5.8 GHz and five single-band modes resonating at 4.2 GHz, 4.58 GHz, 4.86 GHz, 5.7 GHz and 6 GHz. Meanwhile, a FRA for the Wireless Local-Area Network applications is reconfigured from a pair of rectangular DGS resonators integrated with PIN diodes. The antenna is able to switch between a narrowband operation centred at 5.8 GHz and a wideband operation in the range of 3.5 - 5.97 GHz. Finally, a semi-transparent antenna with a wideband-to-narrowband frequency mode is achieved by integrating an E-shaped DGS resonator and PIN diodes to disrupt the current flow. The antenna exhibits an impedance bandwidth from 3 GHz to 6 GHz in the wideband mode and a resonance at 4.75 GHz when operated in the narrowband mode. All prototypes are fabricated and measured to verify the simulated results. The gain of antenna fabricated using the AgHT-4 transparent material is about 59% lower compared to FR-4 due to the electrical loss of the transparent film." @default.
- W2912113821 created "2019-02-21" @default.
- W2912113821 creator A5027316775 @default.
- W2912113821 date "2018-01-01" @default.
- W2912113821 modified "2023-09-24" @default.
- W2912113821 title "Frequency-reconfigurable antenna using ellipse-shaped patch with defected ground structure" @default.
- W2912113821 hasPublicationYear "2018" @default.
- W2912113821 type Work @default.
- W2912113821 sameAs 2912113821 @default.
- W2912113821 citedByCount "0" @default.
- W2912113821 crossrefType "dissertation" @default.
- W2912113821 hasAuthorship W2912113821A5027316775 @default.
- W2912113821 hasConcept C119599485 @default.
- W2912113821 hasConcept C121332964 @default.
- W2912113821 hasConcept C127413603 @default.
- W2912113821 hasConcept C131369404 @default.
- W2912113821 hasConcept C160844929 @default.
- W2912113821 hasConcept C170349913 @default.
- W2912113821 hasConcept C21822782 @default.
- W2912113821 hasConcept C24326235 @default.
- W2912113821 hasConcept C24890656 @default.
- W2912113821 hasConcept C2776096036 @default.
- W2912113821 hasConcept C2776257435 @default.
- W2912113821 hasConcept C2780149590 @default.
- W2912113821 hasConcept C2780202535 @default.
- W2912113821 hasConcept C41008148 @default.
- W2912113821 hasConcept C52236655 @default.
- W2912113821 hasConcept C76155785 @default.
- W2912113821 hasConcept C78434282 @default.
- W2912113821 hasConcept C97126364 @default.
- W2912113821 hasConceptScore W2912113821C119599485 @default.
- W2912113821 hasConceptScore W2912113821C121332964 @default.
- W2912113821 hasConceptScore W2912113821C127413603 @default.
- W2912113821 hasConceptScore W2912113821C131369404 @default.
- W2912113821 hasConceptScore W2912113821C160844929 @default.
- W2912113821 hasConceptScore W2912113821C170349913 @default.
- W2912113821 hasConceptScore W2912113821C21822782 @default.
- W2912113821 hasConceptScore W2912113821C24326235 @default.
- W2912113821 hasConceptScore W2912113821C24890656 @default.
- W2912113821 hasConceptScore W2912113821C2776096036 @default.
- W2912113821 hasConceptScore W2912113821C2776257435 @default.
- W2912113821 hasConceptScore W2912113821C2780149590 @default.
- W2912113821 hasConceptScore W2912113821C2780202535 @default.
- W2912113821 hasConceptScore W2912113821C41008148 @default.
- W2912113821 hasConceptScore W2912113821C52236655 @default.
- W2912113821 hasConceptScore W2912113821C76155785 @default.
- W2912113821 hasConceptScore W2912113821C78434282 @default.
- W2912113821 hasConceptScore W2912113821C97126364 @default.
- W2912113821 hasLocation W29121138211 @default.
- W2912113821 hasOpenAccess W2912113821 @default.
- W2912113821 hasPrimaryLocation W29121138211 @default.
- W2912113821 hasRelatedWork W2240590278 @default.
- W2912113821 hasRelatedWork W2247048966 @default.
- W2912113821 hasRelatedWork W2399804690 @default.
- W2912113821 hasRelatedWork W2566838546 @default.
- W2912113821 hasRelatedWork W2626933632 @default.
- W2912113821 hasRelatedWork W2762791193 @default.
- W2912113821 hasRelatedWork W2809498351 @default.
- W2912113821 hasRelatedWork W2910490232 @default.
- W2912113821 hasRelatedWork W2941991793 @default.
- W2912113821 hasRelatedWork W2945163095 @default.
- W2912113821 hasRelatedWork W2947209527 @default.
- W2912113821 hasRelatedWork W2979157815 @default.
- W2912113821 hasRelatedWork W3015287176 @default.
- W2912113821 hasRelatedWork W3016044778 @default.
- W2912113821 hasRelatedWork W3021021713 @default.
- W2912113821 hasRelatedWork W3023828594 @default.
- W2912113821 hasRelatedWork W3138614243 @default.
- W2912113821 hasRelatedWork W3195695394 @default.
- W2912113821 hasRelatedWork W3199997065 @default.
- W2912113821 hasRelatedWork W2465095192 @default.
- W2912113821 isParatext "false" @default.
- W2912113821 isRetracted "false" @default.
- W2912113821 magId "2912113821" @default.
- W2912113821 workType "dissertation" @default.