NDLI: A Dual-Band Ring-Resonator Bandpass Filter Based on Two Pairs of Degenerate Modes

Content Provider	IEEE Xplore Digital Library
Author	Sha Luo Lei Zhu Sheng Sun
Copyright Year	1963
Abstract	In this paper, a class of dual-band ring-resonator bandpass filters is proposed based on a single ring resonator. As its most distinctive feature, two pairs of first- and second-order degenerate resonant modes in a ring resonator are simultaneously excited, resulting in a compact dual-mode dual-band bandpass filter with two transmission poles in both passbands. Firstly, two capacitors or parallel-coupled lines are placed at two nonorthogonally excited positions along a ring resonator in order to excite the two first-order degenerate modes and create multiple transmission zeros. Next, a set of perturbations is introduced on the ring to excite the two second-order degenerate modes. In our design, two excitation positions are first placed with between 45°- and 135°-separation on a ring. Simulations show that, with a proper arrangement of the excitation angle, two transmission poles in the first passband can be excited and more transmission zeros can be generated. Four and eight open-circuited stubs are loaded symmetrically along the ring, resulting in synchronous excitation of two poles in the second passband. Of the two designed filters with 135°- and 45°-separation, the one with 45° exhibits much better out-of-band performance with three additional transmission zeros at frequencies lower than the first passband, between the two passbands and higher than the second passband. Finally, two filter prototypes are fabricated and their measured results are found to be in good agreement with theory.
Sponsorship	IEEE Microwave Theory and Techniques Society
Starting Page	3427
Ending Page	3432
Page Count	6
File Size	1031411
File Format	PDF
ISSN	00189480
Volume Number	58
Issue Number	12
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-12-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Dual band Band pass filters Passband Filtering theory Optical ring resonators Resonance Capacitors Poles and zeros Frequency Prototypes transmission zeros Bandpass filter dual band dual mode open-circuited stubs ring resonator
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electrical and Electronic Engineering Radiation

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

A dual-mode dual-band bandpass filter using a single ring resonator

A dual-band bandpass filter using a dual-mode ring resonator with two short-circuited stubs

A Novel Dual-Mode Dual-Band Bandpass Filter Based on a Single Ring Resonator

Compact Dual-Mode Triple-Band Bandpass Filters Using Three Pairs of Degenerate Modes in a Ring Resonator

Bandpass Filter Loaded With Open Stubs Using Dual-mode Ring Resonator

Dual-band dual-mode bandpass filter using seriescoupled ring resonators

Planar Realization of a Triple-Mode Bandpass Filter Using a Multilayer Configuration

A dual-mode dual-band bandpass filter with novel perturbation element using open loop resonator

A Dual-Band Bandpass Filter Using a Single Dual-Mode Ring Resonator

A Dual-Band Ring-Resonator Bandpass Filter Based on Two Pairs of Degenerate Modes

Similar Documents

A dual-mode dual-band bandpass filter using a single ring resonator

A dual-band bandpass filter using a dual-mode ring resonator with two short-circuited stubs

A Novel Dual-Mode Dual-Band Bandpass Filter Based on a Single Ring Resonator

Compact Dual-Mode Triple-Band Bandpass Filters Using Three Pairs of Degenerate Modes in a Ring Resonator

Bandpass Filter Loaded With Open Stubs Using Dual-mode Ring Resonator

Dual-band dual-mode bandpass filter using seriescoupled ring resonators

Planar Realization of a Triple-Mode Bandpass Filter Using a Multilayer Configuration

A dual-mode dual-band bandpass filter with novel perturbation element using open loop resonator

A Dual-Band Bandpass Filter Using a Single Dual-Mode Ring Resonator

A Dual-Band Ring-Resonator Bandpass Filter Based on Two Pairs of Degenerate Modes