Systems and methods for antenna calibration
First Claim
1. A method for determining a phase offset comprising:
- simultaneously providing a calibration signal to a first element of an antenna and a second element of the antenna opposite the first element;
receiving a first intermix signal by a third element of the antenna;
measuring an amplitude characteristic for the first intermix signal;
determining the phase offset based on the amplitude characteristic;
receiving a second intermix signal by a fourth antenna element; and
measuring a second amplitude characteristic for the second intermix signal received by the fourth element;
wherein determining the phase offset comprises;
determining a first phase for the calibration signal from the first antenna element that produces a first predetermined amplitude characteristic for the first intermix signal;
determining a second phase for the calibration signal from the first antenna element that results in a second predetermined amplitude characteristic for the second intermix signal; and
employing a determined value of the first phase and a determined value of the second phase to determine the phase offset.
3 Assignments
0 Petitions
Accused Products
Abstract
A method according to an aspect of the present invention includes determining a phase offset by simultaneously providing a calibration signal to a first element of an antenna and a second element of the antenna opposite the first element. The method further includes receiving an intermix signal by a third element of the antenna, measuring an amplitude characteristic for the intermix signal, and determining a phase offset based on the amplitude characteristic. The phase offset can be used to adjust a signal provided to the first element so that signals transmitted from the first element and second element are in phase with each other. This method can account for phase errors due to the construction or design of the antenna, and allows antenna elements to be calibrated without the need for phase detector devices.
-
Citations
17 Claims
-
1. A method for determining a phase offset comprising:
-
simultaneously providing a calibration signal to a first element of an antenna and a second element of the antenna opposite the first element; receiving a first intermix signal by a third element of the antenna; measuring an amplitude characteristic for the first intermix signal; determining the phase offset based on the amplitude characteristic; receiving a second intermix signal by a fourth antenna element; and measuring a second amplitude characteristic for the second intermix signal received by the fourth element; wherein determining the phase offset comprises; determining a first phase for the calibration signal from the first antenna element that produces a first predetermined amplitude characteristic for the first intermix signal; determining a second phase for the calibration signal from the first antenna element that results in a second predetermined amplitude characteristic for the second intermix signal; and employing a determined value of the first phase and a determined value of the second phase to determine the phase offset. - View Dependent Claims (2, 3, 4, 5)
-
-
6. A system comprising:
-
a processor; an antenna; and a memory in communication with the processor and storing instructions that, when executed by the processor, cause the processor to; simultaneously provide a calibration signal to a first element of the antenna and a second element of the antenna opposite the first element; receive a first intermix signal by a third element of the antenna; measure an amplitude characteristic for the first intermix signal; and determine a phase offset based on the amplitude characteristic; wherein the memory further stores instructions to cause the processor to; receive a second intermix signal by a fourth antenna element; and measure a second amplitude characteristic for the second intermix signal received by the fourth element; wherein determining the phase offset comprises; determining a first phase for the signal from the first antenna element that produces a first predetermined amplitude characteristic for the first intermix signal; determining a second phase for the signal from the first antenna element that results in a second predetermined amplitude characteristic for the second intermix signal; and employing a determined value of the first phase and a determined value of the second phase to determine the phase offset. - View Dependent Claims (7, 8, 9)
-
-
10. A method for determining a phase offset comprising:
-
simultaneously providing a calibration signal to a first element of an antenna, to a second element of the antenna opposite the first element, and to a third element of the antenna, wherein the calibration signal transmitted from the first antenna element is in phase with the calibration signal transmitted from the second antenna element; receiving an intermix signal by a fourth element of the antenna; measuring an amplitude characteristic for the intermix signal; and determining the phase offset based on the amplitude characteristic; wherein determining the phase offset includes determining a phase for the calibration signal from the third antenna element that produces a predetermined amplitude characteristic for the intermix signal and employing a determined value of the phase to determine the phase offset. - View Dependent Claims (11, 12, 13)
-
-
14. A system comprising:
-
a processor; an antenna; a memory in communication with the processor and storing instructions that, when executed by the processor, cause the processor to; simultaneously provide a calibration signal to a first element of the antenna and a second element of the antenna opposite the first element, wherein the calibration signal transmitted from the first antenna element is in phase with the calibration signal transmitted from the second antenna element; provide the calibration signal to a third element of the antenna; receive an intermix signal by a fourth element of the antenna; measure an amplitude characteristic for the intermix signal; and determine a phase offset based on the amplitude characteristic; wherein determining the phase offset includes determining a phase for the calibration signal from the third antenna element that produces a predetermined amplitude characteristic for the intermix signal and employing a determined value of the phase to determine the phase offset. - View Dependent Claims (15, 16, 17)
-
Specification