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Wideband Transition for Effective Excitation of Second Higher Order Mode in Microstrip Line
- Source :
- IEEE Antennas and Wireless Propagation Letters. 19:886-890
- Publication Year :
- 2020
- Publisher :
- Institute of Electrical and Electronics Engineers (IEEE), 2020.
-
Abstract
- In this letter, a wideband transition for exciting the second higher order mode on microstrip line is presented. Different from the traditional excitation method, a systematical design approach is first conducted. The field distribution of higher order modes could be well matched and transformed into quasi-TEM mode by a taper structure. Based on the study of the orthogonal principle of different modes, each mode could be effectively excited by a specific amplitude/phase condition of the feeding network. To meet the wideband amplitude and phase radio requirements among different ports of the feeding network, a multimode resonator-based phase shifter could be utilized to achieve 180° phase difference. To validate this proposal, a wideband EH0-to-EH2 mode transition with 60% bandwidth is proposed, designed, and implemented. Both the extracted propagation constant and the back-to-back S -parameters show good wideband response over the concerned frequencies.
- Subjects :
- Physics
Multi-mode optical fiber
Acoustics
Bandwidth (signal processing)
020206 networking & telecommunications
02 engineering and technology
Microstrip
Resonator
Amplitude
0202 electrical engineering, electronic engineering, information engineering
Electrical and Electronic Engineering
Propagation constant
Wideband
Phase shift module
Subjects
Details
- ISSN :
- 15485757 and 15361225
- Volume :
- 19
- Database :
- OpenAIRE
- Journal :
- IEEE Antennas and Wireless Propagation Letters
- Accession number :
- edsair.doi...........ff87553bec9dfc41f94b064148729f01