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:
Sep. 02, 2008
Filed:
Oct. 26, 2004
Louis David Thomas, Malvern, GB;
Philip Edward Haskell, Gosport, GB;
Louis David Thomas, Malvern, GB;
Philip Edward Haskell, Gosport, GB;
Qinetiq Limited, , GB;
Abstract
A phased array antenna system with controllable electrical tilt generates two signals Vand Vwith variable relative delay therebetween. The signals are converted into antenna element drive signals by a power distribution network. The network splits each of the two signals Vand Vinto three signal components. Pairs of components of different signals are input respective hybrid coupling devices (hybrids), which provide vector sums and differences of their inputs and act as phase-to-power converters. Their outputs are distributed between further hybrids, which act as power-to-phase converters and provide antenna element drive signals with phase varying both with element array position and also with the variable relative delay between the two signals Vand VAntenna electrical tilt is therefore controllable by altering a single relative delay.