The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 26, 2002
Filed:
Aug. 30, 2000
Tsutomu Mitsui, Yokohama, JP;
Samsung Electronics Co., Ltd., Kyungki-Do, KR;
Abstract
The invention discloses a 4-line type helical antenna with a simple structure, which can obtain a uniform antenna gain even at a low elevation angle, has a radiation pattern that is not affected even when the antenna is mounted on the chassis of an automobile. The helical antenna comprises a circular cone having a metal surface interposed between an antenna body for transmitting and receiving radio waves to/from a satellite and a satellite terminal for transmitting and receiving the radio waves to/from the antenna body, wherein the circular cone reflects the radio waves of the antenna body. The antenna body has antenna conductors that are spirally formed thereon, and the circular cone is tapered at a predetermined angle so as to uniformly reflect the radio waves of the antenna body. The circular cone is fixed to one end of the antenna body in such way that the tapered angle of the circular cone should be uniformly allocated with respect to an axis of the antenna body.