Stub Loaded Helix Antenna

Description:

A novel antenna design which exhibits performance characteristics similar to the traditional helical antenna such as gain and circular polarization. The antenna is about one third smaller in diameter and one-half as long as traditional helix antenna. The antenna is suitable for use in satellite communication systems, wireless local area networks, and the emerging personal communications systems (PCS) market.

Patent Information:

Title	App Type	Country	Serial No.	Patent No.	File Date	Issued Date	Expire Date	Patent Status
Stub Loaded Helix Antenna	US Utility	*United States	08/888,324	5,986,621	7/3/1997	11/16/1999	7/3/2017	Issued
Stub Loaded Helix Antenna	Foreign	Europe	98 935 538.3-1248	1 016 164	7/2/1998	9/22/2004	7/2/2018	Issued
Stub Loaded Helix Antenna	Foreign	Australia	84762/98	762172	7/2/1998	10/2/2003	7/2/2018	Abandoned
Stub Loaded Helix Antenna	Foreign	Japan	11-507,452	3959123	7/2/1998	8/15/2007	8/15/2027	Issued
Stub Loaded Helix Antenna	Foreign	Canada	2,295,171	2,295,171	7/2/1998	10/18/2005	7/2/2018	Expired/Unpaid Fees
Stub Loaded Helix Antenna	Foreign	Korea	1999-7012488	0489795	12/29/1999	5/6/2005	7/2/2018	Issued
Stub Loaded Helix Antenna	Foreign	China	98 8 06838.9	ZL 98 8 06838.9	1/3/2000	12/10/2003	7/2/2018	Expired/Unpaid Fees
Stub Loaded Helix Antenna	Foreign	Mexico	2000/000143	213475	1/3/2000	4/2/2003	7/2/2018	Issued
Stub Loaded Helix Antenna	Foreign	Hong Kong	01100554.7	HK 1029870	1/22/2001	9/3/2004	7/2/2018	Expired/Unpaid Fees