In this paper, we present a new K-band frequency tunable constant-bandwidth filter with no tunable coupling structures. For the purpose of designing such filter, we have developed novel static coupling structures for TM011 mode cylindrical cavity resonators that can result in a constant bandwidth. For verification, we have designed, fabricated and measured a 2nd-order cavity resonator filter utilizing TM011 mode. The measurement shows that the center frequency can be tuned from 21.5 GHz to 23.3 GHz having the constant bandwidth of 250 MHz.
|Title of host publication||2021 International Conference on Electronics, Information, and Communication, ICEIC 2021|
|Publisher||Institute of Electrical and Electronics Engineers Inc.|
|Publication status||Published - 2021 Jan 31|
|Event||2021 International Conference on Electronics, Information, and Communication, ICEIC 2021 - Jeju, Korea, Republic of|
Duration: 2021 Jan 31 → 2021 Feb 3
|Name||2021 International Conference on Electronics, Information, and Communication, ICEIC 2021|
|Conference||2021 International Conference on Electronics, Information, and Communication, ICEIC 2021|
|Country/Territory||Korea, Republic of|
|Period||21/1/31 → 21/2/3|
Bibliographical noteFunding Information:
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea Government (MSIT) (No. NRF-2018R1A2B6006095. This work was also supported by the Korea Aerospace Research Institute (KARI) (No. FR21H00) Fig. 2. (a) Conventional external coupling structure, (b) External coupling structure which has trench at the center, (c) Proposed external coupling structure (a = 0.4, b = 1.31, c = 9, d = 14, e = 6, f = 1.5, g = 2, h = 7.78, i = 0.07, j = 5.36 (Unit : mm)).
© 2021 IEEE.
- Cavity resonaot filter
- Constant bandwidth
- Coupling structure
ASJC Scopus subject areas
- Artificial Intelligence
- Computer Networks and Communications
- Information Systems
- Information Systems and Management
- Electrical and Electronic Engineering