Communications: radio wave antennas – Antennas – Microstrip
Patent
1998-12-22
2000-10-31
Wimer, Michael C.
Communications: radio wave antennas
Antennas
Microstrip
343702, H01Q 138
Patent
active
061409685
ABSTRACT:
A surface mount circularly polarized wave antenna which includes a substrate made of an insulating material and having a first main face, a second main face, and at least one side face extending between the first main face and second main face; a first ground electrode disposed on the first main face of the substrate; a radiation electrode disposed on the second main face; a feeding electrode having a strip shape and extending from the first main face of the substrate, on the one side face of the substrate, and toward the second main face, one edge of the feeding electrode being positioned near to one side of the radiation electrode; and a second ground electrode disposed on the one side face of the substrate where the feeding electrode is disposed, and electrically conductively isolated from the feeding electrode and electrically conductively connected to the first ground electrode; and a degeneracy separation element provided in relation to the radiation electrode for causing radiation of a circularly polarized wave from the radiation electrode.
REFERENCES:
patent: 5717407 (1998-02-01), Hong
patent: 5912647 (1999-06-01), Tsuru et al.
Itoh Shigekazu
Kawahata Kazunari
Kushihi Yuichi
Matsumoto Haruo
Shikata Masaru
Murata Manufacturing Co. Ltd.
Wimer Michael C.
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