High-Q Tuneable 10-GHz Bragg Resonator for Oscillator Applications

TY - JOUR

T1 - High-Q Tuneable 10-GHz Bragg Resonator for Oscillator Applications

AU - Bale, Simon Jonathan

AU - Deshpande, Pratik Dilip

AU - Hough, Mark

AU - Porter, Stuart John

AU - Everard, Jeremy Kenneth Arthur

N1 - © Copyright 2018 IEEE - All rights reserved.

PY - 2018/2/1

Y1 - 2018/2/1

N2 - This paper describes the design, simulation, and measurement of a tuneable 9.365-GHz aperiodic Bragg resonator. The resonator utilizes an aperiodic arrangement of non (λ/4) low-loss alumina plates (εr = 9.75, loss tangent of 1×10−5 to 2 × 10−5) mounted in a cylindrical metal waveguide. Tuning is achieved by varying the length of the center section of the cavity. A multi-element bellows/probe assembly is presented. A tuning range of 130 MHz (1.39%) is demonstrated. The insertion loss S21 varies from −2.84 to −12.03 dB while the unloaded Q varies from 43 788 to 122 550 over this tuning range. At 10 of the 13 measurement points, the unloaded Q exceeds 100 000, and the insertion loss is above −7 dB. Two modeling techniques are discussed; these include a simple ABCD circuit model for rapid simulation and optimization and a 2.5-D field solver, which is used to plot the field distribution inside the cavity.

AB - This paper describes the design, simulation, and measurement of a tuneable 9.365-GHz aperiodic Bragg resonator. The resonator utilizes an aperiodic arrangement of non (λ/4) low-loss alumina plates (εr = 9.75, loss tangent of 1×10−5 to 2 × 10−5) mounted in a cylindrical metal waveguide. Tuning is achieved by varying the length of the center section of the cavity. A multi-element bellows/probe assembly is presented. A tuning range of 130 MHz (1.39%) is demonstrated. The insertion loss S21 varies from −2.84 to −12.03 dB while the unloaded Q varies from 43 788 to 122 550 over this tuning range. At 10 of the 13 measurement points, the unloaded Q exceeds 100 000, and the insertion loss is above −7 dB. Two modeling techniques are discussed; these include a simple ABCD circuit model for rapid simulation and optimization and a 2.5-D field solver, which is used to plot the field distribution inside the cavity.

KW - Bragg Resonators

KW - Dielectric Resonators (DRs)

KW - Low-Noise Oscillators

KW - Tuneable Resonators

KW - tuneable resonators

KW - dielectric resonators (DRs)

KW - low-noise oscillators

KW - Bragg resonators

UR - http://www.scopus.com/inward/record.url?scp=85038374111&partnerID=8YFLogxK

U2 - 10.1109/TUFFC.2017.2782567

DO - 10.1109/TUFFC.2017.2782567

M3 - Article

SN - 0885-3010

VL - 65

SP - 281

EP - 291

JO - IEEE Transaction of Ultrasonics Ferroelectrics and Frequency Control

JF - IEEE Transaction of Ultrasonics Ferroelectrics and Frequency Control

IS - 2

M1 - 8186212

ER -