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Symmetrical Scanning Leaky Wave Antenaa Using Double Negative and Double Positive Transmission Line  

이재곤 (홍익대학교 전파통신공학과)
이정해 (홍익대학교 전파통신공학과)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.15, no.11, 2004 , pp. 1069-1074 More about this Journal
Abstract
In this paper, we have designed artificial double negative(DNG) transmission line composed of series inter-digital capacitor and two shunt inductive short stubs. This artificial DNG transmission line has the property of double positive (DPS) transmission line over some frequency ranges due to RF nature. In detail, this transmission line simultaneously has the contrary properties of DNG and DPS transmission line depending on operation frequency. DPS/DNG transmission line at leaky region is utilized to design frequency scanning antenna with backfire-to-endfire. We have simulated and measured the dispersion and for-field radiation beam patterns of symmetrical leaky wave antenna. The results show rough agreement.
Keywords
Double Positive(DPS) Medium; Double Negative(DNC) Medium; Transmission Line Theory; Frequency Scanning Antenna;
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