A spiral antenna backed by a conducting plane reflector
نویسندگان
چکیده
منابع مشابه
UWB Spiral Antenna with Parabolic Reflector
A cavity-backed spiral antenna with ultra-wide band width is presented. By using a parabolic reflector, the radiation of the antenna becomes uni-directional, and the gain is promoted. The antenna is fed by a coaxial cut-away balun with fan-shaped patch which keeps a wideband impedance matching. The simulated bandwidth for VSWR < 2 covers 0.36 ~ 6.83GHz or bandwidth ratio of 19:1, and the gain a...
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We consider the problem of recovering a reflecting surface such that for a given point source of light the directions of the reflected rays cover a prescribed region of a far field sphere and the density of the distribution of the reflected rays is a function prescribed in advance, where the aperture of the incident ray cone is also prescribed in advance. Mathematically this problem requires on...
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ژورنال
عنوان ژورنال: IEEE Transactions on Antennas and Propagation
سال: 1986
ISSN: 0096-1973
DOI: 10.1109/tap.1986.1143893