PHASED ARRAY ANTENNA USING PIEZOELECTRIC ACTUATORS

WIPO Patent Application WO1999067853

A3

Waveguide phase shifter (200, Fig. 2 and 300, Fig. 3) uses piezoelectric ceramics to implement a voltage variable actuator (270, 370) for moving at least one dielectric vane (255, 355) relative to a reference surface (206, 306) in a waveguide cavity (285, 385). In this manner, the phase shift in waveguide phase shifters (200, 300) is controlled. In one embodiment, actuator (270) comprises first piezoelectric wafer (210), second piezoelectric wafer (220), first metallic layer (230), second metallic layer (240), third metallic layer (250), mating surface (272) and spacer (265). Actuator (270) uses a stack of piezoelectric materials to establish a lever arm mechanism to establish vertical movement (294) and move dielectric vane (255). Actuator (370) uses a stack of piezoelectric materials to establish vertical movement (394) and move dielectric vane (355). Waveguide phase shifters (200, 300) are used in phased array antenna (400) operating at microwave frequencies.

MALONE ROBERT HUGH (US)
DENDY DEBORAH SUE (US)
COOK DEAN LAWRENCE (US)
PHILLIPS JAMES R (US)
KOMMRUSCH RICHARD S (US)

PCT/US1999/011922

March 02, 2000

May 28, 1999

Click for automatic bibliography generation  

MOTOROLA INC (US)
MALONE ROBERT HUGH (US)
DENDY DEBORAH SUE (US)
COOK DEAN LAWRENCE (US)
PHILLIPS JAMES R (US)
KOMMRUSCH RICHARD S (US)

H01P1/18; H01Q3/26; (IPC1-7): H01P1/18

US4575697A	1986-03-11
US4633118A	1986-12-30
FR2706680A1	1994-12-23
GB591369A	1947-08-15

SHALYAKIN A I: "A MILLIMETER-BAND-PIEZOCERAMIC PHASE SHIFTER*", TELECOMMUNICATIONS AND RADIO ENGINEERING,US,BEGELL HOUSE, INC., NEW YORK, NY, vol. 46, no. 5, pages 102-104, XP000300814, ISSN: 0040-2508

View/Download PDF      PDF Help

Previous Patent: TUNEABLE ANTENNA WITH SEPARATE RADIATORS AND ITS MANUFACTURING PROCESS

Next Patent: INTEGRATED ADAPTIVE ANTENNA OF A MULTIBEAM ANTENNA