Analysis and application of NRD-guide excitors |
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Authors: | Ma Hong Qi Lanfen Zhu Mingli |
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Affiliation: | 1. Department of Electronics and Information Engineering, Huazhong University of Science and Technology Wuhan, 430074, Hubei, People's Republic of China
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Abstract: | In this paper, the NRD-guide excitors using a length of coaxial line which consists of a rectangle external conductor and a thin round inner conductor are presented, and the characteristics of the input impedances of LSE 11 o mode and LSM 11 o mode at the insertion points are analysed and calculated by using the method of the rector Green's function respectively. The computation results show that the mode excitors are able to improve the operating modes matching between NRD-guide and the quasi-TEM transmission line. The structures are suitable for fabrication LSE 11 o mode oscillator and LSM 11 o mode oscillator to compose millimeter wave NRD-guide integrated front ends. An example of an LSE 11 o mode oscillator in Ka-band is given. Its oscillation frequency and output power could be easily adjusted by changing the parameters of the excitor. |
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