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:
Mar. 27, 2001
Filed:
May. 13, 1999
Applicant:
Inventors:
Dieter Pelz, North Croydon, AU;
Natalie Trembath, North Croydon, AU;
Assignee:
Alcatel, Paris, FR;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01P 5/12 ;
U.S. Cl.
CPC ...
H01P 5/12 ;
Abstract
An adjustable microwave diplexer comprising two combline filter sections (A and B). Each filter section has at least three tunable resonator elements (,and,). Non-adjacent resonator elements of one section (A) are inductively coupled by an adjustable coupling element (,), and non-adjacent resonator elements of the other section (B) are capacitively coupled by an adjustable capacitor element (,). This arrangement provides the means to achieve adjustable transmission zeros above the passband of filter A and below the passband of filter B to provide the diplexer with two highly selective filters.