Abstract
This paper presents an investigation of tunable bandstop filter using slotted ground structure. A Barium-Strontium-Titanate (BST) varactor chip is used to tune each resonator and its location is determined by electromagnetic simulation for an optimum frequency tuning. 2-pole bandstop filter is measured at the center frequency from 1.2 to 1.4 GHz and its rejection is more than 15 dB at the stop band while the insertion loss at the pass band is less than 1 dB.
Original language | English |
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Title of host publication | 2008 IEEE MTT-S International Microwave Symposium Digest |
Publisher | IEEE |
Pages | 1115-1118 |
Number of pages | 4 |
ISBN (Print) | 9781424417803 |
DOIs | |
Publication status | Published - 26 Sept 2008 |
Event | 2008 IEEE MTT-S International Microwave Symposium Digest - Atlanta, GA, United States Duration: 15 Jun 2008 → 20 Jun 2008 |
Conference
Conference | 2008 IEEE MTT-S International Microwave Symposium Digest |
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Abbreviated title | MTT |
Country/Territory | United States |
City | Atlanta, GA |
Period | 15/06/08 → 20/06/08 |
Keywords
- Bandstop filter
- BST
- Slotted ground
- Tunable circuit
- Tunable filter
- Varactor