US 7,321,332 B2
Device for measuring angle positions
Thomas Focke, Ahrbergen (Germany); Thomas Hansen, Hildesheim (Germany); Martin Schneider, Hildesheim (Germany); Joerg Schoebel, Salzgitter (Germany); Volker Gross, Bielefeld (Germany); and Oliver Brueggemann, Ilsede (Germany)
Assigned to Robert Bosch GmbH, Stuttgart (Germany)
Appl. No. 10/537,667
PCT Filed Sep. 18, 2003, PCT No. PCT/DE03/03103
§ 371(c)(1), (2), (4) Date May 04, 2006,
PCT Pub. No. WO2004/051308, PCT Pub. Date Jun. 17, 2004.
Claims priority of application No. 102 56 524 (DE), filed on Dec. 04, 2002.
Prior Publication US 2006/0250296 A1, Nov. 09, 2006
Int. Cl. G01S 5/04 (2006.01); G01S 13/00 (2006.01)
U.S. Cl. 342—432  [342/70; 342/374] 10 Claims
OG exemplary drawing
 
1. A device for measuring angular positions using radar pulses and mutually overlapping antenna beam characteristics, comprising:
at least two antenna elements;
a phase shifter arranged in a signal path of at least one of the at least two antenna elements, wherein the phase shifter is configured to switch between different phase states in a time-division multiplexing manner to change a radiation characteristic of the at least one of the at least two antenna elements;
an evaluation unit to jointly evaluate signals received from the at least two antenna elements;
a 180° hybrid phase setting element to connect the at least two antenna elements; and
a transfer switch arranged at an output of the 180° hybrid phase setting element for evaluating a composite beam and a differential beam of at least two antenna elements via a mixer in time-division multiplexing.