Communications: radio wave antennas – Antennas – Spiral or helical type
Reexamination Certificate
2011-06-07
2011-06-07
Ho, Tan (Department: 2821)
Communications: radio wave antennas
Antennas
Spiral or helical type
C343S897000
Reexamination Certificate
active
07956818
ABSTRACT:
An leaky coaxial cable antenna with high radiation efficiency and low insertion loss is described. The outer shield of the coaxial cable is constructed to facilitate energy transfer between the bifilar mode and the monofilar mode by constructing the outer conductor of a first conductive strip wrapped in a spiral about the dielectric and a plurality of second conductive strips wrapped in a counter spiral about the first but spaced serially along the length of the coaxial cable such that portions of the cable are wrapped by a single spiral and the other portions are wrapped by two spirals.
REFERENCES:
patent: 3601721 (1971-08-01), Park
patent: 4008479 (1977-02-01), Smith
patent: 4152648 (1979-05-01), Delogne
patent: 4339733 (1982-07-01), Smith
patent: 5898350 (1999-04-01), Aberasturi
patent: 5936203 (1999-08-01), Ryman
patent: 6690336 (2004-02-01), Leisten et al.
patent: 7113148 (2006-09-01), Lan et al.
patent: 7471258 (2008-12-01), Hsu
Non Final Office Action for U.S. Appl. No. 12/252,189, dated Jul. 8, 2010.
Hill, Propagation ALong A coaxial Cable with a Helical Shield, IEEE Transactions on Microwave Theory And Techniques, vol. MTT-28, No. 2, Feb. 1988.
Hsu Tsung-Yuan
Schaffner James H
Allemeier Daniel R.
Ho Tan
HRL Laboratories LLC
Rapacki George R.
LandOfFree
Leaky coaxial cable with high radiation efficiency does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Leaky coaxial cable with high radiation efficiency, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Leaky coaxial cable with high radiation efficiency will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2732764