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:
Nov. 11, 2008
Filed:
May. 10, 2004
Philip Edward Haskell, Gosport, GB;
Philip Edward Haskell, Gosport, GB;
Quintel Technology Limtied, , GB;
Abstract
A phased array antenna system with adjustable electrical tilt includes an array () of antenna elements, to. It has a splitter () dividing a radio frequency (RF) carrier signal into two signals between which a phase shifter () introduces a variable phase shift. Further splitters () and () divide the relatively phase shifted signals into two sets of five signals. Four of each of the sets of five signals are vectorially combined in a network of 180 degree hybrid couplers, to. This provides vector sum and difference components which together with the fifth members of the sets are fed to respective fixed phase shifters () and 64, to. The phase shifters, toprovide signals which are appropriately phased for use as phased array drive signals for respective antenna elements 62, to 62. Adjustment of the single phase shift provided by the variable phase shifter () changes the angle of electrical tilt of the entire antenna array ().