Analysis and application of NRD-guide excitors |
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Authors: | Ma Hong Qi Lanfen and Zhu Mingli |
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Institution: | (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
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mode and LSM
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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
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mode oscillator and LSM
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mode oscillator to compose millimeter wave NRD-guide integrated front ends. An example of an LSE
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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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