초록 ▼

Improved antennas and antenna systems for use in cellular and other wireless communications systems. A folded mono-bow antenna element is provided which has a substantially omnidirectional radiation pattern in a horizontal plane and shows variation in gain in an elevation plane depending upon the si

Improved antennas and antenna systems for use in cellular and other wireless communications systems. A folded mono-bow antenna element is provided which has a substantially omnidirectional radiation pattern in a horizontal plane and shows variation in gain in an elevation plane depending upon the size of an associated ground plane. The folded mono-bow antenna element comprises a main bowtie radiating element and parasitic element wherein the main bowtie radiating element and parasitic element are separated by a dielectric material having a dielectric constant preferably less than 4.5 and, in some cases, less than or equal to 3.3. Various antenna arrays and methods of making the same are also provided.

대표청구항 ▼

[ What is claimed is:] [1.] An antenna array for use in cellular and other wireless communications systems, said antenna array comprising:a pair of folded mono-bow antenna elements, each having a main radiating bowtie element and a parasitic element, said parasitic elements being mounted to a common

[ What is claimed is:] [1.] An antenna array for use in cellular and other wireless communications systems, said antenna array comprising:a pair of folded mono-bow antenna elements, each having a main radiating bowtie element and a parasitic element, said parasitic elements being mounted to a common ground plane, said main radiating bowtie elements being mounted respectively to first and second feed pins extending through a first pair of holes formed in said common ground plane;a pair of "T" shaped antenna elements, each having a main radiating "T" element and a feed strip element, said main radiating "T" elements being mounted to said common ground plane, and said feed strip elements being mounted respectively to third and fourth feed pins extending through a second pair of holes formed in said common ground plane;a first summing circuit coupled to said first and second feed pins;a second summing circuit coupled to said third and fourth feed pins; andtwo pairs of director elements coupled to said common ground plane, said first pair of director elements being positioned within a first plane passing through a first pair of opposing corners of said common ground plane, and said second pair of director elements being positioned within a second plane passing through a second pair of opposing corners of said common ground plane.