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HE04 Mode Exciters With Flat Transmission and High Mode Purity for Confocal Gyro-TWAs.
- Source :
- IEEE Transactions on Electron Devices; Jun2018, Vol. 65 Issue 6, p2340-2346, 7p
- Publication Year :
- 2018
-
Abstract
- A new topology to excite the HE04 mode in wide bandwidth for confocal gyro-TWAs is presented. The mode exciter consists of a TE04 mode exciter and a TE04–HE04 transition waveguide section formed by two cascaded one-stage tapers. In addition, the closed-to-open confocal waveguide boundaries are studied. Numerical results show that the port reflection of the whole structure is well below −10 dB over 90–110 GHz; the transmission of HE04 mode is better than −1 dB over 94–107 GHz. Even more important, a maximum transmission variation of less than ±0.15 dB over the 1-dB bandwidth and a mode purity of better than 97.2% over the 3-dB bandwidth are achieved. The mode exciter is compact and easy to be fabricated, which can be applied to cold-test experiments of confocal gyro-amplifiers circuits. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00189383
- Volume :
- 65
- Issue :
- 6
- Database :
- Complementary Index
- Journal :
- IEEE Transactions on Electron Devices
- Publication Type :
- Academic Journal
- Accession number :
- 129949447
- Full Text :
- https://doi.org/10.1109/TED.2017.2779321