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. 24, 1998
Filed:
Jun. 13, 1996
Applicant:
Inventor:
Richard M Hahn, Cincinnati, OH (US);
Assignee:
Xetron Corporation, Cincinnati, OH (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03H / ;
U.S. Cl.
CPC ...
333167 ; 333174 ;
Abstract
A bandpass filter network having a first two pole filter and a second two pole filter provided in parallel to the first two pole filter. The first filter is optimally coupled while the second filter is extremely overcoupled. Moreover, the first filter and second filter are shifted 180.degree. out of phase with one another. This phase shift is preferably accomplished by a balun transformer. Alternatively, the 180.degree. phase shift may be accomplished by having the first and second filters utilizing different forms of coupling (i.e., one inductively coupled, the other capacitively coupled).