Voltage-controlled RF filters employing thin-film barium-strontium-titanate tunable capacitors

Ali Tombak; Jon Paul Maria; Francisco T. Ayguavives; Zhang Jin; Gregory T. Stauf; Angus I. Kingon; Amir Mortazawi

doi:10.1109/TMTT.2002.807822

Voltage-controlled RF filters employing thin-film barium-strontium-titanate tunable capacitors

Ali Tombak
, Jon Paul Maria
, Francisco T. Ayguavives
, Zhang Jin
, Gregory T. Stauf
, Angus I. Kingon
, Amir Mortazawi

Research output: Contribution to journal › Article › peer-review

212 Scopus citations

Abstract

Tunable lowpass and bandpass lumped-element filters employing barium-strontium-titanate (BST)-based capacitors are presented. A new metallization technique is used, which improves the quality factor of the tunable BST capacitors by a factor of two. The lowpass filter has an insertion loss of 2 dB and a tunability of 40% (120-170 MHz) with the application of 0-9-V dc bias. The bandpass filter (BPF) has an insertion loss of 3 dB and a tunability of 57% (176-276 MHz) with the application of 0-6 V dc. The third-order intercept point of the BPF was measured to be 19 dBm with the application of two tones around 170 MHz.

Original language	English (US)
Pages (from-to)	462-467
Number of pages	6
Journal	IEEE Transactions on Microwave Theory and Techniques
Volume	51
Issue number	2 I
DOIs	https://doi.org/10.1109/TMTT.2002.807822
State	Published - Feb 2003

All Science Journal Classification (ASJC) codes

Radiation
Condensed Matter Physics
Electrical and Electronic Engineering

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10.1109/TMTT.2002.807822

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@article{76b036b76c444096bb70ffbe081ce955,

title = "Voltage-controlled RF filters employing thin-film barium-strontium-titanate tunable capacitors",

abstract = "Tunable lowpass and bandpass lumped-element filters employing barium-strontium-titanate (BST)-based capacitors are presented. A new metallization technique is used, which improves the quality factor of the tunable BST capacitors by a factor of two. The lowpass filter has an insertion loss of 2 dB and a tunability of 40\% (120-170 MHz) with the application of 0-9-V dc bias. The bandpass filter (BPF) has an insertion loss of 3 dB and a tunability of 57\% (176-276 MHz) with the application of 0-6 V dc. The third-order intercept point of the BPF was measured to be 19 dBm with the application of two tones around 170 MHz.",

author = "Ali Tombak and Maria, \{Jon Paul\} and Ayguavives, \{Francisco T.\} and Zhang Jin and Stauf, \{Gregory T.\} and Kingon, \{Angus I.\} and Amir Mortazawi",

note = "Funding Information: Manuscript received November 10, 2001; revised May 12, 2002. This work was supported in part by the Defense Advanced Research Projects Agency “Frequency Agile Materials for Electronics Program” under Contract F33615-98-C-5411 and by the National Science Foundation “Small Information Technology Research Program” under Award 0113350.",

year = "2003",

month = feb,

doi = "10.1109/TMTT.2002.807822",

language = "English (US)",

volume = "51",

pages = "462--467",

journal = "IEEE Transactions on Microwave Theory and Techniques",

issn = "0018-9480",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

number = "2 I",

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TY - JOUR

T1 - Voltage-controlled RF filters employing thin-film barium-strontium-titanate tunable capacitors

AU - Tombak, Ali

AU - Maria, Jon Paul

AU - Ayguavives, Francisco T.

AU - Jin, Zhang

AU - Stauf, Gregory T.

AU - Kingon, Angus I.

AU - Mortazawi, Amir

N1 - Funding Information: Manuscript received November 10, 2001; revised May 12, 2002. This work was supported in part by the Defense Advanced Research Projects Agency “Frequency Agile Materials for Electronics Program” under Contract F33615-98-C-5411 and by the National Science Foundation “Small Information Technology Research Program” under Award 0113350.

PY - 2003/2

Y1 - 2003/2

N2 - Tunable lowpass and bandpass lumped-element filters employing barium-strontium-titanate (BST)-based capacitors are presented. A new metallization technique is used, which improves the quality factor of the tunable BST capacitors by a factor of two. The lowpass filter has an insertion loss of 2 dB and a tunability of 40% (120-170 MHz) with the application of 0-9-V dc bias. The bandpass filter (BPF) has an insertion loss of 3 dB and a tunability of 57% (176-276 MHz) with the application of 0-6 V dc. The third-order intercept point of the BPF was measured to be 19 dBm with the application of two tones around 170 MHz.

AB - Tunable lowpass and bandpass lumped-element filters employing barium-strontium-titanate (BST)-based capacitors are presented. A new metallization technique is used, which improves the quality factor of the tunable BST capacitors by a factor of two. The lowpass filter has an insertion loss of 2 dB and a tunability of 40% (120-170 MHz) with the application of 0-9-V dc bias. The bandpass filter (BPF) has an insertion loss of 3 dB and a tunability of 57% (176-276 MHz) with the application of 0-6 V dc. The third-order intercept point of the BPF was measured to be 19 dBm with the application of two tones around 170 MHz.

UR - https://www.scopus.com/pages/publications/0037292248

UR - https://www.scopus.com/pages/publications/0037292248#tab=citedBy

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DO - 10.1109/TMTT.2002.807822

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SP - 462

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JO - IEEE Transactions on Microwave Theory and Techniques

JF - IEEE Transactions on Microwave Theory and Techniques

IS - 2 I

ER -

Voltage-controlled RF filters employing thin-film barium-strontium-titanate tunable capacitors

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All Science Journal Classification (ASJC) codes

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