Compact triple-mode microwave dielectric resonator filters

Saad Luhaib, Mustafa Safaa Ahmed Bakr, Ian Hunter, Nutapong Somjit

Research output: Contribution to journalArticleResearchpeer-review

Abstract

This paper presents a novel and compact triple-mode dielectric resonator (DR) bandpass filter (BPF) based on a single waveguide cavity. A triple-mode resonator can be achieved by pairing the degenerate EH11 modes with a TM01δ mode. The DR structure is composed of two slitted pieces of dielectric pucks that are placed in the middle of a cylindrical metallic cavity. The resonator offers a size reduction ratio of about 15.6% compared with equivalent air-filled coaxial filters. A coaxial probe is used to excite the degenerate EH11 modes while the TM01 mode is excited using a vertical hole etched in the ceramic pucks. Finally, a, third-order generalised Chebyshev BPF is simulated using HFSS software. The filter has finite transmission zeros (TZ) on the high or low side of the passband.
Original languageEnglish
JournalInternational Journal of Electronics
Publication statusPublished - 2019

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Microwave resonators
Dielectric resonators
Bandpass filters
Resonators
Chebyshev filters
Wave filters
Waveguides
Air

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Compact triple-mode microwave dielectric resonator filters. / Luhaib, Saad; Bakr, Mustafa Safaa Ahmed; Hunter, Ian; Somjit, Nutapong.

In: International Journal of Electronics, 2019.

Research output: Contribution to journalArticleResearchpeer-review

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title = "Compact triple-mode microwave dielectric resonator filters",
abstract = "This paper presents a novel and compact triple-mode dielectric resonator (DR) bandpass filter (BPF) based on a single waveguide cavity. A triple-mode resonator can be achieved by pairing the degenerate EH11 modes with a TM01δ mode. The DR structure is composed of two slitted pieces of dielectric pucks that are placed in the middle of a cylindrical metallic cavity. The resonator offers a size reduction ratio of about 15.6{\%} compared with equivalent air-filled coaxial filters. A coaxial probe is used to excite the degenerate EH11 modes while the TM01 mode is excited using a vertical hole etched in the ceramic pucks. Finally, a, third-order generalised Chebyshev BPF is simulated using HFSS software. The filter has finite transmission zeros (TZ) on the high or low side of the passband.",
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AB - This paper presents a novel and compact triple-mode dielectric resonator (DR) bandpass filter (BPF) based on a single waveguide cavity. A triple-mode resonator can be achieved by pairing the degenerate EH11 modes with a TM01δ mode. The DR structure is composed of two slitted pieces of dielectric pucks that are placed in the middle of a cylindrical metallic cavity. The resonator offers a size reduction ratio of about 15.6% compared with equivalent air-filled coaxial filters. A coaxial probe is used to excite the degenerate EH11 modes while the TM01 mode is excited using a vertical hole etched in the ceramic pucks. Finally, a, third-order generalised Chebyshev BPF is simulated using HFSS software. The filter has finite transmission zeros (TZ) on the high or low side of the passband.

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JO - International Journal of Electronics

JF - International Journal of Electronics

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