Matches in SemOpenAlex for { <https://semopenalex.org/work/W1512067196> ?p ?o ?g. }
Showing items 1 to 67 of
67
with 100 items per page.
- W1512067196 abstract "The investigation into three types of dielectric resonators for use in base-station filtering applications is presented.The triple-mode cubic TE016 resonator is shown to have good performance for high Q applications. Its suitability for realising conventional narrowband selective bandpass filter responses is proved. The effect on the response of spurious intercavity couplings through irises is studied. The triple-mode cubic TE016 resonator is also used for the realisation of a novel type of filter, the even-odd hybrid mode reflection filter, which eliminates the need for cross-couplings for any symmetrical frequency response. The insensitivity of the new type of filter to most spuriouscouplings is shown in the case of a sixth degree elliptic filter. The drawbacks of this type of filter are also described.The new dual-mode conductor-loaded dielectric resonator is presented. An exact model of the resonator is necessary for an accurate study of this resonator. The axial mode-matching technique is used. The relative numbers of modes to use in each section of the model for optimum convergence primarily depend on the mode type and the relative diameters of the dielectric cylinder and the metal disc. Theconvergence of the resonant frequencies is good. That of the quality factors is slower but still provide useful approximate results. These convergences are affected respectively by large electric and magnetic field amplitudes in singularity regions. The resonant frequency and Q. of the fundamental mode are primarily dependent onthe diameter and height of the dielectric cylinder respectively. The resonator geometry is optimised for Qu and spurious separation at 900 MHz and trade-offs betweenthe two criteria are quantified. The resonator is found to be particularly suited for medium Q applications, i. e. between 4000 and 7000.The third resonator, the dielectric-loaded TEO,, resonator, is shown to be well suited for applications around 2 GHz and requiring Qu's of a few thousands. Theoptimum cavity cross-section dimensions for maximum Qu volume are almost constant over a wide range of cavity diameters. The trade-off between Qu and spurious separation is explained. Coupling bandwidth limitations in the case of off-line cavities are found to be solvable by using off-centred resonators. 80 MHz wide filters, optimised for ease of manufacturing, are built." @default.
- W1512067196 created "2016-06-24" @default.
- W1512067196 creator A5037342751 @default.
- W1512067196 date "2003-12-01" @default.
- W1512067196 modified "2023-09-26" @default.
- W1512067196 title "Dielectric resonators and filters for cellular base-stations" @default.
- W1512067196 hasPublicationYear "2003" @default.
- W1512067196 type Work @default.
- W1512067196 sameAs 1512067196 @default.
- W1512067196 citedByCount "0" @default.
- W1512067196 crossrefType "dissertation" @default.
- W1512067196 hasAuthorship W1512067196A5037342751 @default.
- W1512067196 hasConcept C106131492 @default.
- W1512067196 hasConcept C119599485 @default.
- W1512067196 hasConcept C120665830 @default.
- W1512067196 hasConcept C121332964 @default.
- W1512067196 hasConcept C127413603 @default.
- W1512067196 hasConcept C127820260 @default.
- W1512067196 hasConcept C133386390 @default.
- W1512067196 hasConcept C147788027 @default.
- W1512067196 hasConcept C206493696 @default.
- W1512067196 hasConcept C24326235 @default.
- W1512067196 hasConcept C24890656 @default.
- W1512067196 hasConcept C2776096036 @default.
- W1512067196 hasConcept C49040817 @default.
- W1512067196 hasConcept C97126364 @default.
- W1512067196 hasConceptScore W1512067196C106131492 @default.
- W1512067196 hasConceptScore W1512067196C119599485 @default.
- W1512067196 hasConceptScore W1512067196C120665830 @default.
- W1512067196 hasConceptScore W1512067196C121332964 @default.
- W1512067196 hasConceptScore W1512067196C127413603 @default.
- W1512067196 hasConceptScore W1512067196C127820260 @default.
- W1512067196 hasConceptScore W1512067196C133386390 @default.
- W1512067196 hasConceptScore W1512067196C147788027 @default.
- W1512067196 hasConceptScore W1512067196C206493696 @default.
- W1512067196 hasConceptScore W1512067196C24326235 @default.
- W1512067196 hasConceptScore W1512067196C24890656 @default.
- W1512067196 hasConceptScore W1512067196C2776096036 @default.
- W1512067196 hasConceptScore W1512067196C49040817 @default.
- W1512067196 hasConceptScore W1512067196C97126364 @default.
- W1512067196 hasLocation W15120671961 @default.
- W1512067196 hasOpenAccess W1512067196 @default.
- W1512067196 hasPrimaryLocation W15120671961 @default.
- W1512067196 hasRelatedWork W1528091467 @default.
- W1512067196 hasRelatedWork W172247011 @default.
- W1512067196 hasRelatedWork W1991828382 @default.
- W1512067196 hasRelatedWork W2006152060 @default.
- W1512067196 hasRelatedWork W2017478770 @default.
- W1512067196 hasRelatedWork W2018196471 @default.
- W1512067196 hasRelatedWork W2054815254 @default.
- W1512067196 hasRelatedWork W2074427623 @default.
- W1512067196 hasRelatedWork W2076079012 @default.
- W1512067196 hasRelatedWork W2120011513 @default.
- W1512067196 hasRelatedWork W2123118148 @default.
- W1512067196 hasRelatedWork W2128214580 @default.
- W1512067196 hasRelatedWork W2132663793 @default.
- W1512067196 hasRelatedWork W2138685284 @default.
- W1512067196 hasRelatedWork W2290851637 @default.
- W1512067196 hasRelatedWork W2413075589 @default.
- W1512067196 hasRelatedWork W2595367513 @default.
- W1512067196 hasRelatedWork W2183498085 @default.
- W1512067196 hasRelatedWork W2201358149 @default.
- W1512067196 hasRelatedWork W2901859969 @default.
- W1512067196 isParatext "false" @default.
- W1512067196 isRetracted "false" @default.
- W1512067196 magId "1512067196" @default.
- W1512067196 workType "dissertation" @default.