Planar serpentine slot antenna

摘要

A planar surface antenna comprising two conducting etched patterns on an insulating substrate where the first conductor has a planar serpentine shape defining a plurality of parallel, spaced apart radiator elements. A second etched conductor pattern has comb-like portions interleaved within the radiator elements of the first conductor. A coaxial conductor provides the feed signal to the second conductor with its ground connection to the first conductor. The resonant frequency, impedance, and bandwidth of the antenna are controlled by total length of serpentine radiator element widths and lengths. The antenna forms a non directional radiating antenna. Two of these serpentine antennas can be combined into one antenna to form a directional radiating antenna. The feed signal is connected to the second conductor of a first antenna and the first conductor of a second antenna. The ground wire is connected to the first conductor of the first antenna and the second conductor of the second antenna, realizing a small directional antenna.