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:
Jun. 23, 2020
Filed:
Sep. 04, 2015
The Board of Trustees of the Leland Stanford Junior University, Palo Alto, CA (US);
Emily McMilin, Palo Alto, CA (US);
David S. De Lorenzo, Palo Alto, CA (US);
Per K. Enge, Mountain View, CA (US);
Dennis M. Akos, Boulder, CO (US);
The Board of Trustees of the Leland Stanford Junior University, Stanford, CA (US);
Abstract
There is provided an apparatus comprising an antenna () configured to receive a signal from a global navigation satellite system, wherein the antenna includes a first feed and a second feed; a hybrid coupler () including a first hybrid input, a second hybrid input, a first hybrid output, a second hybrid output, and wherein the first hybrid output is shifted in phase by 90 degrees relative to the second hybrid output; a variable phase shifter () including a shifter input and a shifter output, hybrid output; and a combiner () including a first combiner input, a second combiner input, and a combiner output, wherein the first combiner input is coupled to the shifter output, and the second combiner input is coupled to the second hybrid output, and wherein the combiner output is provided to detection circuitry ().