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Enhancement of corona discharge thresholds in microstrip bandpass filters by using cover-ended resonators.
- Source :
- International Journal of Microwave & Wireless Technologies; Sep2021, Vol. 13 Issue 7, p708-718, 11p
- Publication Year :
- 2021
-
Abstract
- This paper studies the corona discharge power thresholds in microstrip bandpass filters (BPFs) and, in particular, is focused on a solution based on λ/2 cover-ended resonators to enhance their peak power handling capability (PPHC). First, a parametric analysis is carried out to evaluate the variation of the maximum electric field and the unloaded quality factor (Q<subscript>u</subscript>) as a function of the cover's geometrical dimensions (i.e. height, length, and width). Next, several microstrip BPFs centered at 1.6 GHz are designed, and their behaviors under moderate-to-high applied RF power signals are simulated to corroborate the previous study. A suitable number and size of covers are selected to enhance PPHC without barely degrading the filters' electrical performance and, consequently, without hardly increasing the insertion losses. Finally, two third-order filters with covers and without covers (benchmark prototype) are manufactured, by way of illustration, and they are tested in the European High-Power RF Space Laboratory to validate the good performance of the proposed solution, where a PPHC enhancement of 3.1 dB at high pressures is achieved as compared to the benchmark prototype. [ABSTRACT FROM AUTHOR]
- Subjects :
- CORONA discharge
RESONATORS
BANDPASS filters
QUALITY factor
ELECTRIC fields
Subjects
Details
- Language :
- English
- ISSN :
- 17590787
- Volume :
- 13
- Issue :
- 7
- Database :
- Complementary Index
- Journal :
- International Journal of Microwave & Wireless Technologies
- Publication Type :
- Academic Journal
- Accession number :
- 151772877
- Full Text :
- https://doi.org/10.1017/S1759078721000532