[TowerTalk] News from Bencher

[KI7WX@aol.com]

Before I bother him at Bencher, did Bob happen to provide, or does anyone know any details regarding gain and stacking information, e.g. element spacing (for side mounting) et al?

For future reference, http://www.uspto.gov/web/menu/search.html is a search engine at the US Patent Office that will let you browse their database.  Very useful tool.  If you go to this site and search on the patent number below you can obtain the full text and images online.  

I've quoted in the abstract from Tom's patent below for interested parties:

United States Patent  5,995,061 
Schiller 
November 30, 1999 


No loss, multi-band, adaptable antenna 

Abstract

A no-loss, multi-band, adaptable Yagi style antenna employs a multi-element driven cell having a center element and one or more adjacent elements
on each side of the center element. The adjacent elements of the driven cell are electrically shorter than the center element, thereby permitting the
driven cell to be tuned to two or more frequency bands. The antenna is fed by a feedline connected to a common feed point at the center of the center element in the driven cell. Parasitic director elements are positioned in front of the driven cell and are tuned to the highest band of the driven cell. Parasitic reflector elements for one or more frequency bands are positioned behind the driven cell, with these elements tuned to actual operating frequencies of the antenna. The invention also provides a multi-band dipole antenna array covering three or more frequency bands comprising a set of dipole elements having a center element and one or more adjacent elements and one or more adjacent elements on each side of the center element. The adjacent elements are electrically shorter than the center element and are of unequal lengths. The antenna is fed by a feedline connected to a common feedpoint at the center of the center element of the set of dipole elements. Parasitic director!
 elements are positioned in front of the set of dipole elements and parasitic reflector elements are positioned behind the set of dipole elements. 


Inventors: Schiller; Thomas H. (1837 Granger Ave., Los Altos, CA 94024) 
Appl. No.: 891246
Filed: July 10, 1997

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