High tuning sensitivity dielectric resonator oscillator from optimization of dielectric resonator TE 01δ mode

Amir Effendy Muhammad-Afifi, Widad Ismail, Mandeep Singh Jit Singh

Research output: Contribution to journalArticle

Abstract

A method to achieve a wide tuning range with a tuning sensitivity of 1 MHZ/V or higher for the dielectric resonator (DR) oscillator operating at 3.6 GHz is reported. Experiments on a DR circuit excited in the TE01δ resonant mode were carried out, with its tuning stub in circular shape. It is found that the tuning stub dimensions can affect the DR tuning range. A linear tuning pattern can be achieved by keeping the tuning stub electrical length at λ2, and by reducing the tuning stub Z 0, that is increasing its width, the tuning bandwidth is increased. 3D EM simulation reveals that as the tuning stub width is increased, the H-field coupling between the DR and the tuning stub increases, which explains the increase in K. Based on this finding, a DR tuning method that offers wide tuning bandwidth for applications with a small varactor tuning range is proposed.

Original languageEnglish
Pages (from-to)128-142
Number of pages15
JournalMicrowave Journal
Volume54
Issue number10
Publication statusPublished - Oct 2011

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Dielectric resonators
Tuning
Bandwidth
Varactors

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

High tuning sensitivity dielectric resonator oscillator from optimization of dielectric resonator TE 01δ mode. / Muhammad-Afifi, Amir Effendy; Ismail, Widad; Jit Singh, Mandeep Singh.

In: Microwave Journal, Vol. 54, No. 10, 10.2011, p. 128-142.

Research output: Contribution to journalArticle

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