System and method for compensating for power loss due to a radio frequency (RF) signal probe mismatch in conductive signal testing
AssigneeLitePoint Corporation
InventorsChen Cao, Christian Volf Olgaard, Ray Wang
Life of this patent
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Abstract
System and method for compensating for power loss due to a radio frequency (RF) signal probe mismatch in conductive RF signal testing of a RF data signal transceiver device under test (DUT). Sourcing the RF test signal with the RF vector signal transceiver at multiple test frequencies enables isolation of and compensation for power loss due to a mismatch between the RF signal probe and RF DUT connection based on predetermined losses of the RF signal path.
Claims2
An apparatus including a system for compensating power loss of a radio frequency (RF) signal probe used in conductive RF signal testing of a device under test (DUT), comprising:
- a RF vector signal transceiver responsive to one or more transceiver control signals by generating one or more outgoing RF signals and time domain processing one or more incoming RF signals;
- a RF signal probe to convey said one or more outgoing RF signals and said one or more incoming RF signals to and from, respectively, a DUT;
- a conductive RF signal path connected to and between said RF vector signal transceiver and said RF signal probe via first and second signal path ends, respectively, to convey said one or more outgoing RF signals and said one or more incoming RF signals;
- one or more processors coupled to communicate with said RF vector signal transceiver;
- and
- one or memory devices coupled to said one or more processors and comprising a non-transitory computer readable medium containing a plurality of computer readable instructions that, when executed by said one or more processors, cause said one or more processors to provide said one or more transceiver control signals such that
- said one or more outgoing RF signals comprise an iterative plurality of mutually distinct RF signal frequencies with a single frequency tone,
- said one or more incoming RF signals comprise a plurality of reflected RF signals from said RF signal probe and related to at least a portion of said one or more outgoing RF signals, and
- said time domain processing one or more incoming RF signals comprises
- computing a plurality of measured signal magnitudes of said plurality of reflected RF signals, and
- computing a plurality of net signal magnitudes of said plurality of reflected RF signals reduced by corresponding ones of a plurality of predetermined path losses of said conductive RF signal path corresponding to said plurality of mutually distinct RF signal frequencies.
A method for compensating power loss of a radio frequency (RF) signal probe used in conductive RF signal testing of a device under test (DUT), comprising:
- responding, with a RF vector signal transceiver, to one or more transceiver control signals by generating one or more outgoing RF signals and time domain processing one or more incoming RF signals;
- conveying said one or more outgoing RF signals and said one or more incoming RF signals via a RF signal probe to and from, respectively, a DUT;
- conveying said one or more outgoing RF signals and said one or more incoming RF signals via a conductive RF signal path that is connected to and between said RF vector signal transceiver and said RF signal probe via first and second signal path ends, respectively;
- and
- communicating with said RF vector signal transceiver by accessing and executing a plurality of computer readable instructions to provide said one or more transceiver control signals such that
- said one or more outgoing RF signals comprise an iterative plurality of mutually distinct RF signal frequencies with a single frequency tone,
- said one or more incoming RF signals comprise a plurality of reflected RF signals from said RF signal probe and related to at least a portion of said one or more outgoing RF signals, and
- said time domain processing one or more incoming RF signals comprises
- computing a plurality of measured signal magnitudes of said plurality of reflected RF signals, and
- computing a plurality of net signal magnitudes of said plurality of reflected RF signals reduced by corresponding ones of a plurality of predetermined path losses of said conductive RF signal path corresponding to said plurality of mutually distinct RF signal frequencies.
Dependencies are inferred from the claim text.