Frequency translating device transmission response system

A system of determining the transmission response of a device under test (DUT), the DUT is a frequency translation device (FTD), the system comprising,

• a first port means and a second port means, the first and second ports means for coupling the DUT to a first test FTD (TD1) during a first measurement, for coupling the DUT to a second test FTD (TD2) during a second measurement, and for coupling the TD1 to the TD2 during a third measurement, the TD1 and TD2 are FTDs, the first measurement provides a first frequency response of the DUT coupled with the TD1 with one of the coupled DUT and TD1 an up converter FTD and the other one of the coupled DUT and TD1 a down converter FTD, the second measurement provides a second frequency response of the DUT coupled to the TD2 with one of the coupled DUT and TD2 an up converter FTD and the other one of the coupled DUT and TD2 a down converter FTD, the third measurement provides a third frequency response of the TD1 coupled with the TD2 with one of the coupled TD1 and TD2 an up converter FTD and the other one of the coupled TD1 and TD2 a down converter FTD, one of the TD1 FTD and TD2 FTD has a reciprocal up converter and down converter frequency response, the one FTD is an up converter during one of the first, second or third measurements and is a down converter during another one of the first, second or third measurements,
• an oscillator means for providing a local oscillator signal, the up and down converters receive the local oscillator signal for frequency translation,
• an analyzer means for measuring the first, second and third frequency responses by providing an input signal at the first port means and by sampling the an output signal at the second port means, for repeating the first measurement with the local oscillator signal of one of the up or down converters phase shifted ninety degrees to provide a first repeated frequency response, for repeating the second measurement with the local oscillator signal of one of the up or down converters phase shifted ninety degrees to provide a second repeated frequency response, and for repeating the third measurement with the local oscillator signal of one of the up or down converters phase shifted ninety degrees to provide a third repeated frequency response, the one FTD is an up converter during one of the first, second or third measurements and respectively during the first, second or third repeated measurements and is an down converter during another one of the first, second or third measurements and respectively during the first, second or third repeated measurements, and
• controller means for calculating the transmission response of the DUT from the first, second and third frequency responses and the first, second and third repeated frequency responses.

A system of determining the transmission response of a device under test (DUT), the DUT is a frequency translation device (FTD), the system comprising,

• a port means for coupling the DUT to a first test FTD (TD1) during a first measurement, the port means is also for coupling the DUT to a second test FTD (TD2) during a second measurement, and the port means is also for coupling the TD1 to the TD2 during a third measurement, the TD1 and TD2 are FTDs, the first measurement provides a first frequency response of the DUT coupled with the TD1 with one of the coupled DUT and TD1 an up converter FTD and the other one of the coupled DUT and TD1 a down converter FTD, the second measurement provides a second frequency response of the DUT coupled to the TD2 with one of the coupled DUT and TD2 an up converter FTD and the other one of the coupled DUT and TD2 a down converter FTD, the third measurement provides a third frequency response of the TD1 coupled with the TD2 with one of the coupled TD1 and TD2 an up converter FTD and the other one of the coupled TD1 and TD2 a down converter FTD, one of the TD1 FTD and TD2 FTD has a reciprocal up converter and down converter frequency response, the one FTD is an up converter during one of the first, second or third measurements and is a down converter during another one of the first, second or third measurements,
• an analyzer means for measuring the first, second and third measurements by providing an input signal to the port means and by sampling the an output signal from the port means, and
• a controller means for calculating the transmission response of the DUT from the first, second and third frequency responses.

A system for determining the transmission response of a device under test (DUT), the DUT is a frequency translation device (FTD), the system comprising,

• a first port and a second port, the first and second ports for coupling the DUT to a first test FTD (TD1) during a first measurement, for coupling the DUT to a second test FTD (TD2) during a second measurement, and for coupling the TD1 to the TD2 during a third measurement, the TD1 and TD2 are FTDs, the first measurement provides a first frequency response of the DUT coupled with the TD1 with one of the coupled DUT and TD1 an up converter FTD and the other one of the coupled DUT and TD1 a down converter FTD, the second measurement provides a second frequency response of the DUT coupled to the TD2 with one of the coupled DUT and TD2 an up converter FTD and the other one of the coupled DUT and TD2 a down converter FTD, the third measurement provides a third frequency response of the TD1 coupled with the TD2 with one of the coupled TD1 and TD2 an up converter FTD and the other one of the coupled TD1 and TD2 a down converter FTD, one of the TD1 FTD and TD2 FTD has a reciprocal up converter and down converter frequency response, the one FTD is an up converter during one of the first, second or third measurements and is a down converter during another one of the first, second or third measurements,
• an analyzer for measuring the first, second and third measurements by providing an input signal at the first port and by sampling an output signal at the second port, and
• a controller for calculating the transmission response of the DUT from the first, second and third frequency responses.

A system of determining the transmission response of a device under test (DUT), the DUT is a frequency translation device (FTD), the system comprising,

• a first port and a second port, the first and second ports for coupling the DUT to a first test FTD (TD1) during a first measurement, for coupling the DUT to a second test FTD (TD2) during a second measurement, and for coupling the TD1 to the TD2 during a third measurement, the TD1 and TD2 are FTDs, the first measurement provides a first frequency response of the DUT coupled with the TD1 with one of the coupled DUT and TD1 an up converter FTD and the other one of the coupled DUT and TD1 a down converter FTD, the second measurement provides a second frequency response of the DUT coupled to the TD2 with one of the coupled DUT and TD2 an up converter FTD and the other one of the coupled DUT and TD2 a down converter FTD, the third measurement provides a third frequency response of the TD1 coupled with the TD2 with one of the coupled TD1 and TD2 an up converter FTD and the other one of the coupled TD1 and TD2 a down converter FTD, one of the TD1 FTD and TD2 FTD has a reciprocal up converter and down converter frequency response, the one FTD is an up converter during one of the first, second or third measurements and is a down converter during another one of the first, second or third measurements,
• an oscillator for providing a local oscillator signal, the up and down converters receive the local oscillator signal for frequency translation,
• an analyzer for measuring the first, second and third frequency responses by providing an input signal at the first port and by sampling the an output signal at the second port, for repeating the first measurement with the local oscillator signal of one of the up or down converters phase shifted ninety degrees to provide a first repeated frequency response, for repeating the second measurement with the local oscillator signal of one of the up or down converters phase shifted ninety degrees to provide a second repeated frequency response, and for repeating the third measurement with the local oscillator signal of one of the up or down converters phase shifted ninety degrees to provide a third repeated frequency response, the one FTD is an up converter during one of the first, second or third measurements and respectively during the first, second or third repeated measurements and is an down converter during another one of the first, second or third measurements and respectively during the first, second or third repeated measurements, and
• controller for calculating the transmission response of the DUT from the first, second and third frequency responses and the first, second and third repeated frequency responses.

A system of determining the transmission response of a device under test (DUT), the DUT is a frequency translation device (FTD), the system comprising,

• a port for coupling the DUT to a first test FTD (TD1) during a first measurement, the port is also for coupling the DUT to a second test FTD (TD2) during a second measurement, and the port is also for coupling the TD1 to the TD2 during a third measurement, the TD1 and TD2 are FTDs, the first measurement provides a first frequency response of the DUT coupled with the TD1 with one of the coupled DUT and TD1 an up converter FTD and the other one of the coupled DUT and TD1 a down converter FTD, the second measurement provides a second frequency response of the DUT coupled to the TD2 with one of the coupled DUT and TD2 an up converter FTD and the other one of the coupled DUT and TD2 a down converter FTD, the third measurement provides a third frequency response of the TD1 coupled with the TD2 with one of the coupled TD1 and TD2 an up converter FTD and the other one of the coupled TD1 and TD2 a down converter FTD, one of the TD1 FTD and TD2 FTD has a reciprocal up converter and down converter frequency response, the one FTD is an up converter during one of the first, second or third measurements and is a down converter during another one of the first, second or third measurements,
• an analyzer for measuring the first, second and third measurements by providing an input signal to the port and by sampling the an output signal from the port, and
• a controller for calculating the transmission response of the DUT from the first, second and third frequency responses.