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:
Jul. 24, 2012
Filed:
Feb. 23, 2009
John David Rhodes, Menston, GB;
John David Rhodes, Menston, GB;
Filtronic Wireless Ltd, Shipley, GB;
Abstract
A band combining filter for passing signals in a communications band includes a plurality of cascaded directional filters. Each directional filter has at least two inputs and at least two outputs. The nth directional filter is arranged such that output signals Oand Ofrom the first and second outputs are related to input signals I, Ito the first and second inputs by the relation with R and T being reflection and transmission functions respectively. The directional filters are connected in a cascade with the first and second inputs of the nth directional filter being connected to the first and second outputs of the (n−1)th directional filter respectively in the cascade. At least one of the reflection functions Roverlaps with the corresponding reflection function Rwithin the communication band but is different thereto.