Method to Remove the Effects of LO Drift from Vector Network Analyzer Measurements
AssigneeEight Ten Labs LLC
InventorAlex Arsenovic
Life of this patent
Estimating the term…
Abstract
Certain exemplary embodiments can provide a method, which can comprise automatically removing effects of local oscillator phase drift occurring in between two measurements of reciprocal networks as made with a vector network analyzer. The method can further comprise determining that the vector network analyzer substantially simultaneously samples all incident and reflected waves from the reciprocal networks.
Claims10
A method comprising:
- determining a local oscillator phase drift occurring in between two measurements of reciprocal networks as made with a vector network analyzer via a calculation of an equation:
- θ
- =
- -
- <
-
- A
- m
-
- -
- 1
-
-
- B
- m
- ′
-
- 2
- where:
- Am are measurements of a first reciprocal network of the reciprocal networks;
- and
- Bm are measurements of a second reciprocal network of the reciprocal networks.
The method of claim of 1, further comprising:
- automatically removing the local oscillator phase drift.
The method of claim of 1, further comprising:
- determining that the vector network analyzer substantially simultaneously samples all incident and reflected waves from the reciprocal networks.
The method of claim of 1, further comprising:
- determining switch error terms of the vector network analyzer.
The method of claim of 1, further comprising:
- applying switch error term correction to measurements.
The method of claim of 1, further comprising:
- measuring a response from each of the reciprocal networks with the vector network analyzer.
The method of claim of 1, wherein:
- the local oscillator phase drift is removed from one or more transmissive standards during a calibration of the vector network analyzer.
A method comprising:
- automatically removing effects of local oscillator phase drift occurring in between two measurements of reciprocal networks as made with a vector network analyzer.
A method comprising:
- detecting that a local oscillator phase drift of value larger than ±π/2 radians has occurred, and choosing a correct branch of a complex argument of an equation:
- θ
- =
- -
- <
-
- A
- m
-
- -
- 1
-
-
- B
- m
- ′
-
- 2
- where:
- Am are measurements of a first reciprocal network of the reciprocal networks;
- and
- Bm are measurements of a second reciprocal network of the reciprocal networks;
- and
- automatically correcting for the local oscillator phase drift.
Dependencies are inferred from the claim text.