Frequency- And Bandwidth-Tunable Absorptive Bandpass Filter

Seong Wook Jeong, Tae Hak Lee, Ju Seop Lee

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

In this paper, an analytic design method for a frequency- and bandwidth-tunable absorptive bandpass filter is introduced. The presented design method relies on the transformation from the normalized absorptive low-pass filter prototype to a bandpass filter structure with parallel resonators and admittance inverters. The inverter values for producing a predefined frequency response are given in closed-form expressions so that a filter design needs no heuristic approach and can be carried out in an analytic manner. This work also presents a new tunable stub resonator structure capable of changing not only its resonant frequency but also the slope parameter. As the slope parameter can be adjusted, it is allowed to use static inverters in designing a filter whose bandwidth can be tuned. For demonstrating our design method for a reconfigurable absorptive bandpass filter, a third-order filter having the target to have the frequency tuning range from 1.35 to 1.65 GHz and the bandwidth tuning range from 5% to 10% has been designed and measured.

Original languageEnglish
Article number8717621
Pages (from-to)2172-2180
Number of pages9
JournalIEEE Transactions on Microwave Theory and Techniques
Volume67
Issue number6
DOIs
Publication statusPublished - 2019 Jun 1
Externally publishedYes

Fingerprint

Bandpass filters
bandpass filters
bandwidth
Bandwidth
static inverters
filters
Resonators
Tuning
resonators
tuning
slopes
inverters
low pass filters
Low pass filters
electrical impedance
frequency response
Frequency response
resonant frequencies
Natural frequencies
prototypes

Keywords

  • Absorptive filter
  • microstrip line filter structure
  • tunable filter
  • tunable stub resonator

ASJC Scopus subject areas

  • Radiation
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this

Frequency- And Bandwidth-Tunable Absorptive Bandpass Filter. / Jeong, Seong Wook; Lee, Tae Hak; Lee, Ju Seop.

In: IEEE Transactions on Microwave Theory and Techniques, Vol. 67, No. 6, 8717621, 01.06.2019, p. 2172-2180.

Research output: Contribution to journalArticle

@article{8c11ac636f35449a8f538b46568519e1,
title = "Frequency- And Bandwidth-Tunable Absorptive Bandpass Filter",
abstract = "In this paper, an analytic design method for a frequency- and bandwidth-tunable absorptive bandpass filter is introduced. The presented design method relies on the transformation from the normalized absorptive low-pass filter prototype to a bandpass filter structure with parallel resonators and admittance inverters. The inverter values for producing a predefined frequency response are given in closed-form expressions so that a filter design needs no heuristic approach and can be carried out in an analytic manner. This work also presents a new tunable stub resonator structure capable of changing not only its resonant frequency but also the slope parameter. As the slope parameter can be adjusted, it is allowed to use static inverters in designing a filter whose bandwidth can be tuned. For demonstrating our design method for a reconfigurable absorptive bandpass filter, a third-order filter having the target to have the frequency tuning range from 1.35 to 1.65 GHz and the bandwidth tuning range from 5{\%} to 10{\%} has been designed and measured.",
keywords = "Absorptive filter, microstrip line filter structure, tunable filter, tunable stub resonator",
author = "Jeong, {Seong Wook} and Lee, {Tae Hak} and Lee, {Ju Seop}",
year = "2019",
month = "6",
day = "1",
doi = "10.1109/TMTT.2019.2914111",
language = "English",
volume = "67",
pages = "2172--2180",
journal = "IEEE Transactions on Microwave Theory and Techniques",
issn = "0018-9480",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
number = "6",

}

TY - JOUR

T1 - Frequency- And Bandwidth-Tunable Absorptive Bandpass Filter

AU - Jeong, Seong Wook

AU - Lee, Tae Hak

AU - Lee, Ju Seop

PY - 2019/6/1

Y1 - 2019/6/1

N2 - In this paper, an analytic design method for a frequency- and bandwidth-tunable absorptive bandpass filter is introduced. The presented design method relies on the transformation from the normalized absorptive low-pass filter prototype to a bandpass filter structure with parallel resonators and admittance inverters. The inverter values for producing a predefined frequency response are given in closed-form expressions so that a filter design needs no heuristic approach and can be carried out in an analytic manner. This work also presents a new tunable stub resonator structure capable of changing not only its resonant frequency but also the slope parameter. As the slope parameter can be adjusted, it is allowed to use static inverters in designing a filter whose bandwidth can be tuned. For demonstrating our design method for a reconfigurable absorptive bandpass filter, a third-order filter having the target to have the frequency tuning range from 1.35 to 1.65 GHz and the bandwidth tuning range from 5% to 10% has been designed and measured.

AB - In this paper, an analytic design method for a frequency- and bandwidth-tunable absorptive bandpass filter is introduced. The presented design method relies on the transformation from the normalized absorptive low-pass filter prototype to a bandpass filter structure with parallel resonators and admittance inverters. The inverter values for producing a predefined frequency response are given in closed-form expressions so that a filter design needs no heuristic approach and can be carried out in an analytic manner. This work also presents a new tunable stub resonator structure capable of changing not only its resonant frequency but also the slope parameter. As the slope parameter can be adjusted, it is allowed to use static inverters in designing a filter whose bandwidth can be tuned. For demonstrating our design method for a reconfigurable absorptive bandpass filter, a third-order filter having the target to have the frequency tuning range from 1.35 to 1.65 GHz and the bandwidth tuning range from 5% to 10% has been designed and measured.

KW - Absorptive filter

KW - microstrip line filter structure

KW - tunable filter

KW - tunable stub resonator

UR - http://www.scopus.com/inward/record.url?scp=85067106170&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85067106170&partnerID=8YFLogxK

U2 - 10.1109/TMTT.2019.2914111

DO - 10.1109/TMTT.2019.2914111

M3 - Article

AN - SCOPUS:85067106170

VL - 67

SP - 2172

EP - 2180

JO - IEEE Transactions on Microwave Theory and Techniques

JF - IEEE Transactions on Microwave Theory and Techniques

SN - 0018-9480

IS - 6

M1 - 8717621

ER -