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. 18, 2000
Filed:
Aug. 21, 1997
William M Waters, Millerville, MD (US);
The United States of America as represented by the Secretary of the Navy, Washington, DC (US);
Abstract
The stripline-slotline digital phase shifter is located between a ground plane associated with a patch antenna and another ground plane associated with the other patch antenna, or other output circuits. It is comprised of a section of stripline adjacent to a slot in ground plane associated with the receiving patch antenna which transitions an input electromagnetic signal to a plurality of oval slotlines, called bit circuits, of varying lengths which form a delay circuit by shifting the phase of the input electromagnetic signal. The varying lengths of slotline are switched into and out of the circuit to provide a predetermined amount of delay and the phase adjusted electromagnetic signal is transitioned to portion of stripline adjacent to a slot associated with the transmission patch antenna or other output circuits.