• Title, Summary, Keyword: dielectric resonator filter

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The study of the characteristic of the cylindrical dielectric resonator filter (원통형 유전체 공진기 필터 특성 연구)

  • 김주영;박도영;김종철;이기진
    • Proceedings of the IEEK Conference
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    • pp.431-434
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    • 2002
  • In this paper, The resonant frequencies of any modes in the dielectric resonator filter is determined by numberical analysis. The theoretical analysis for the dielectric resonator filter used Ansoft HFSS. We designed the dielectric resonator filter with resonant frequency 4.5 GHz. We describe the characteristics of delivering Power to resonator in different shaped coupling loops. Tile resonant mode of T $E_{01{\delta}}$ and T $E_{01{\delta}}$ could be selected by the horizontal and the vertical coupling loop.p.

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Design and Inquiry of Band-pass Filter Using the Dielectric Resonator (유전체 공진기를 이용한 대역통과 여과기의 설계와 고찰)

  • Gil, Sang-Geun;Kim, Nam;Park, Han-Kyu
    • Proceedings of the Korean Institute of Communication Sciences Conference
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    • pp.25-28
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    • 1984
  • This paper describes the design of band-pass filter using the dielectric resonator and microstrip line depends mainly upon the magnetic field and is principal parameter as band-pass filter. Because dielectric resonator band~pass filter has a very high-Q, the bandwidth of this filter is very narrow. as a result of experiment, the dielectric resonator bandwidth of this filter is very narrow. As a result of experiment, the dielectric resonator band-pase filter has various modes central frequencies due to the mode change and good characteristric as a band-pass filter.

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Triple-Mode Characteristics of Cylindrical Cavity Loading a Cylindrical Dielectric Resonator

  • Lee, Seung-Mo;Kim, Cha-Man;Park, Jong-Chul;Kim, In-Ryeol;Oh, Soon-Soo
    • The Journal of Korea Institute of Information, Electronics, and Communication Technology
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    • v.9 no.6
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    • pp.630-636
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    • 2016
  • In this paper, a novel triple-mode cavity structure, designed for compactness and operating at 850 MHz, is analyzed. A cylindrical dielectric resonator is loaded into a metallic cylindrical cavity. Previous study has been focused on the analysis of the cylindrical dielectric resonator, but in this paper, the effect of the cylindrical metallic cavity has been analyzed. Enclosing the dielectric resonator inside the metallic cavity increases the resonant frequency of the dielectric resonator; however, this increases the quality factor and introduces the possibility of installing coupling screws. The principle of generation of triple-mode was investigated by parametric analysis. The generated triple-mode is TE011 mode and two orthogonally generated HEM121 modes. By adjusting the radius of the dielectric resonator, the height of the dielectric resonator, or the radius of the cylindrical metallic cavity, three modes could be coincided. However, the height of the metallic cavity keeps three modes separated. The mode characteristics of the proposed cavity are analyzed using a full-wave electromagnetic (EM) simulation. The proposed triple-mode cavity could be developed to triple-mode filter using a coupling screw, and the commercial application for the miniaturized filter below 1 GHz could be expected.

Design and Implementation of Duplexer Filter for Mobile Communication using $lambada$/4 TEM Mode Dielectric Resonator ($lambada$/4 TEM모드 유전체 공진기를 이용한 이동통신용 듀플렉서 필터 설계 및 제작)

  • 윤중락;이헌용;이석원
    • Journal of the Korean Institute of Electrical and Electronic Material Engineers
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    • v.11 no.11
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    • pp.975-983
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    • 1998
  • A duplexer filter operating at 1.9 GHz band for personal communication system is designed and fabricated using $lambada$/4 TEM mode dielectric resonator. The transmitting band pass filter is designed in the type of the elliptic function band rejection filter by 3 dielectric resonators with 5 additional capacitors and 3 inductors. The receiving band pass filter is designed by 3 dielectric resonators with 5 additional capacitors which give additional series resonance. The parameters which are evaluated by design theory are practically applied to the duplexer filter construction and the simulation.

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Ku-Band Dielectric Resonator Bandpass Filter for Satellite Transponder (인공 위성 중계기용 Ku-Band 유전체 공진기 대역 통과 필터)

  • 김상철;이찬주;홍의석
    • Journal of the Korean Institute of Telematics and Electronics A
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    • v.29A no.11
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    • pp.49-56
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    • 1992
  • In this paper a band-pass filter using dielectric resonators with tuning screw and spacer at Ku-band is designed and constructed. For the filter design and construction, the coupling coefficient K between two resonators is numberically evaluated. The external quality factor Q$_{ex}$ is also calculated with a microstrip line which is necessary for the field excitation of dielectric resonator. The coupling between dielectric resonator and microstrip line depends mainly upon the magnetic field and is principal parameter in band-pass filter. The Q$_{ex}$ and K data which are evaluated by numberical analysis are practically applied to the filter construction. The theoretical Band-pass filter responses are given by Chebyshev approximation and they are nearly similar to the experimental results.

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Design and simulation of the DR ceramic bandpass filter for WLL(Wireless Local Loop) basestation (WLL(Wireless Local Loop) 기지국용 DR(Dielectric Resonator) 세라믹 대역통과 필터 설계와 시뮬레이션)

  • 김지균;이헌용
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • pp.315-318
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    • 1999
  • The purpose of this study is to establish the design theory of a DR ceramic bandpass filter used for WLL basestations and to research on the design theory of bandpass filter. The design procedure is circuit parameters and structural parameters will be derived. It was observed that the filter characteristics at the simulations

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Design and Simulation of the DR(Dielectric Resonator) Ceramic Band-Pass Filter for Basestation (중계국용 DR(Dielectric Resonator) 세라믹 대역통과 필터 설계 및 시뮬레이션)

  • Kim, Jee-Gyun;Lee, Heon-Yong
    • Proceedings of the KIEE Conference
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    • pp.1922-1924
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    • 1999
  • The purpose of this study is to establish the design theory of a DR ceramic bandpass filter used for basestations and to research on the design theory of bandpass filter. The design procedure is circuit parameters and structural parameters will be derived. It was observed that the filter characteristics at the simulations.

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Novel 100 GHz Dual-Mode Stepped Impedance Resonator BPF Using micromachining Technology (마이크로 머시닝 기술을 이용한 새로운 구조의 100 GHz DMR bandpass Filter의 설계 및 제작)

  • Baek, Tae-Jong;Lee, Sang-Jin;Han, Min;Lim, Byeong-Ok;Yoon, Jin-Seob;Rhee, Jin-Koo
    • Journal of the Institute of Electronics Engineers of Korea SD
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    • v.44 no.12
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    • pp.7-11
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    • 2007
  • In this paper, we proposed the dual-mode stepped impedance ring resonator bandpass filter for MMIC (Microwave Monolithic Integrated Circuit) applications using the dielectric-supported air-gapped microstrip line (DAML). The ring resonator fabricated by surface micromachining technology. This filter consists of a DAML resonator layer and a CPW feed line. The DAML ring resonator is elevated with $10{\mu}m$ height from GaAs substrate surface. This bandpass filter is $1-{\lambda}g$ type stepped impedance ring resonator including dual-mode resonance. From the measurements, we obtained attenuation of over 15 dB and insertion loss of 2.65 dB at the center frequency of 97 GHz. Relative bandwidth is about 12 % at 97 GHz. Furthermore, the proposed bandpass filter is useful to integrate with conventional MMICs.

Analysis of Coupling Windows of the Dielectric Resonator Filter (유전체 공진기 필터의 결합창 특성해석)

  • 김병욱;윤두일;윤상원
    • The Journal of Korean Institute of Electromagnetic Engineering and Science
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    • v.13 no.1
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    • pp.101-105
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    • 2002
  • In this paper, the coupling windows of the dielectric resonator filter have been analyzed. The coupling factor which has been used to characterize the coupling window is represented by closed form expressions. The deviation of the coupling factor as the size of coupling window has been compared between calculated by presented method and measured ones. There are very closed agreements. The presented method can be applied not only to design dielectric resonator but also to design varactor tuned dielectric resonator filter so as that the passband bandwidth is constant within tuned ranges.

Design of a Dielectric Resonator Filter with Improved Flatness Passband for WiBro band (통과대역 내 평탄도를 개선한 휴대인터넷 대역 유전체 공진기 여파기 설계)

  • Lee, Song-Yi;Yun, Sang-Won
    • Proceedings of the Korea Electromagnetic Engineering Society Conference
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    • pp.13-16
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    • 2005
  • Many mobile communication systems require bandpass filter with sharp skirt characteristics and consequently a filter was formed by more order. It needs to improve flatness in passband. In this paper, amplitude equalizer was used to improve the flatness of passband. We modified Chebyshev prototype filter by use of network synthesis and computed the prototype elements for Shaping filter. We designed and realized a 13-order combline bandpass filter and 4-order amplitude equalizer with coaxial dielectric resonators at WiBro band. The measured results show $\pm$0.82 dB amplitude difference in passband, 6 dB improved flatness.

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