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:
Aug. 28, 2001
Filed:
Jun. 01, 1998
Hugh Robert Malone, Phoenix, AZ (US);
Deborah Sue Dendy, Tempe, AZ (US);
Dean Lawrence Cook, Mesa, AZ (US);
James R. Phillips, Albuquerque, NM (US);
Richard S. Kommrusch, Albuquerque, NM (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
Waveguide phase shifter (,FIG.,and,FIG.,) uses piezoelectric ceramics to implement a voltage variable actuator (,) for moving at least one dielectric vane (,) relative to a reference surface (,) in a waveguide cavity (,). In this manner, the phase shift in waveguide phase shifters (,) is controlled. In one embodiment, actuator (,) comprises first piezoelectric wafer (,), second piezoelectric wafer (,), first metallic layer (,), second metallic layer (,), third metallic layer (,), mating surface (,) and spacer (,). Actuator (,) uses a stack of piezoelectric materials to establish a lever arm mechanism to establish vertical movement (,) and move dielectric vane (,). Actuator (,) uses a stack of piezoelectric materials to establish vertical movement (,) and move dielectric vane (,). Waveguide phase shifters (,) are used in phased array antenna (,) operating at microwave frequencies.