Control System for Piezoelectric-Actuator-Based Tunable Evanescent-Mode Cavity Microwave Filters

Shahrokh Saeedi; Sattar Atash-Bahar; Juseop Lee; Hjalti Sigmarsson

doi:10.1109/TCPMT.2018.2874939

Control System for Piezoelectric-Actuator-Based Tunable Evanescent-Mode Cavity Microwave Filters

Shahrokh Saeedi, Sattar Atash-Bahar, Juseop Lee, Hjalti Sigmarsson

Department of Computer Science and Engineering

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

8 Citations (Scopus)

Abstract

A control system for automatic tuning of substrate-integrated, evanescent-mode cavity, microwave filters, with piezoelectric actuators, is developed. The system is based on an elegant sensing method using monitoring capacitors mounted on top of the actuators, where the digital value of them is directly measured. The system first requires us to characterize the resonators in the filter and then can automatically tune the filter without any extra instrument. Characterization is used to circumvent the hysteresis and creeping effects of the piezoelectric actuators. This procedure extracts a unique frequency-capacitance relationship, which is modeled using a quadratic polynomial and saved into the system for tuning. Polynomial coefficients, extracted from the characterization data, are utilized to implement a closed-loop feedback control algorithm for the standalone tuning operation. The capability of the control system in automatically tuning a variety of microwave filters using this methodology is experimentally demonstrated.

Original language	English
Article number	8487015
Pages (from-to)	1979-1989
Number of pages	11
Journal	IEEE Transactions on Components, Packaging and Manufacturing Technology
Volume	8
Issue number	11
DOIs	https://doi.org/10.1109/TCPMT.2018.2874939
Publication status	Published - 2018 Nov

Bibliographical note

Funding Information:
Manuscript received October 19, 2017; revised March 29, 2018 and August 15, 2018; accepted September 26, 2018. Date of publication October 9, 2018; date of current version November 12, 2018. This work was supported by the Agency for Defense Development (ADD), Daejeon, Republic of Korea under Contract UD120046FD. Recommended for publication by Associate Editor T. Wu upon evaluation of reviewers’ comments. (Corresponding author: Shahrokh Saeedi.) S. Saeedi is with the Advanced Radar Research Center (ARRC), The University of Oklahoma, Norman, OK 73019 USA (e-mail: sh.saeedi@ou.edu). S. Atash-Bahar is with LivaNova PLC, Houston, TX 77058 USA.

Publisher Copyright:
© 2011-2012 IEEE.

Keywords

Automatic tuning
Bandpass filters
Bandpass-bandstop cascade
Bandstop filters
Capacitive sensor
Evanescent-mode cavity
Feedback control
Tunable

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Industrial and Manufacturing Engineering
Electrical and Electronic Engineering

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10.1109/TCPMT.2018.2874939

Cite this

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title = "Control System for Piezoelectric-Actuator-Based Tunable Evanescent-Mode Cavity Microwave Filters",

abstract = "A control system for automatic tuning of substrate-integrated, evanescent-mode cavity, microwave filters, with piezoelectric actuators, is developed. The system is based on an elegant sensing method using monitoring capacitors mounted on top of the actuators, where the digital value of them is directly measured. The system first requires us to characterize the resonators in the filter and then can automatically tune the filter without any extra instrument. Characterization is used to circumvent the hysteresis and creeping effects of the piezoelectric actuators. This procedure extracts a unique frequency-capacitance relationship, which is modeled using a quadratic polynomial and saved into the system for tuning. Polynomial coefficients, extracted from the characterization data, are utilized to implement a closed-loop feedback control algorithm for the standalone tuning operation. The capability of the control system in automatically tuning a variety of microwave filters using this methodology is experimentally demonstrated.",

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author = "Shahrokh Saeedi and Sattar Atash-Bahar and Juseop Lee and Hjalti Sigmarsson",

note = "Funding Information: Manuscript received October 19, 2017; revised March 29, 2018 and August 15, 2018; accepted September 26, 2018. Date of publication October 9, 2018; date of current version November 12, 2018. This work was supported by the Agency for Defense Development (ADD), Daejeon, Republic of Korea under Contract UD120046FD. Recommended for publication by Associate Editor T. Wu upon evaluation of reviewers{\textquoteright} comments. (Corresponding author: Shahrokh Saeedi.) S. Saeedi is with the Advanced Radar Research Center (ARRC), The University of Oklahoma, Norman, OK 73019 USA (e-mail: sh.saeedi@ou.edu). S. Atash-Bahar is with LivaNova PLC, Houston, TX 77058 USA. Publisher Copyright: {\textcopyright} 2011-2012 IEEE.",

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Control System for Piezoelectric-Actuator-Based Tunable Evanescent-Mode Cavity Microwave Filters

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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