An omnidirectional medium gain 460 MC base station antenna using simplified suppressors

The use of suppressors to provide a collinear array that has a single feed point has been described. The suppressor design reported was one that provided optimum performance. During the course of the development program, several other types of suppressors were investigated. One type, although slightly inferior in performance to that described, is very attractive because of its simplicity. While it is not satisfactory for use in high gain (10 db) antennas, it is suitable for use in medium gain (4-6 db) antennas, and offers interesting cost reduction possibilities. The design and performance of a 6 db antenna for use in the 450-470 MC band is described.