ENA-X and ENA Series Vector Network Analyzers.pdf - 第29页

29 Gain Compression Measurements ( S96086B ) The Gain Compression Appl ication (GCA) provides in put power, output power, gain, and phase at the compression point of an amplifier or frequen cy converters, over a specifie…

Scalar Mixer/Converter Measurements (S96082B)

S96082B provides Frequency Offset Mode (FOM) to set the frequency of the internal source(s)

independently from where the receivers are tuned, and to configure external sources using External

Device Configuration. This functionality is also included with S96029/083/084/086/089/090, both B and

A models.

With a simple setup and calibration, this application delivers the highest accuracy for scalar conversion-

loss/gain measurements by combining one-port and power-meter calibrations to remove mismatch errors.

S96082B provides an intuitive and easy-to-use user interface for setting up mixer and converter

measurements, with single or dual conversion stages. It can control external signal generators for use as

LO signals. Supported external sources include the Keysight ESG, PSG, EXG, and MXG Series, as well

as other SCPI-controlled signal generators.

S96082B is compatible with S96084B, which enables measurements of converters with internal Los.

Vector and Scalar Mixer/Converter Measurements

(S96083B)

This application includes the scalar mixer/converter plus phase (SMC+Phase) measurement class that

provides fully calibrated conversion gain/loss, relative phase, and absolute group delay measurements of

mixers and converters without the need for reference or calibration mixers. Eliminating the calibration

mixer requires a U9391C/F/G comb generator

and an external DC power supply capable of sourcing +15

V and 300 mA for U9391C/F or 800 mA for U9391G. A Vector Mixer Characterization (VMC) is also

included for measuring group delay of frequency converting devices. VMC is used to characterize a

calibration mixer supplied by the user.

SMC+Phase with the S96083B provides an intuitive and easy-to-use user interface for setting up mixer

and converter measurements, with single or dual conversion stages. It can control the analyzer’s built-in

source(s) as well as external signal generators for use as LO signals. Supported external sources include

the Keysight ESG, PSG, EXG, and MXG Series, as well as other SCPI-controlled signal generators.

S96083B is a superset of S96082B, so they should not be installed together. S96083B is compatible with

S96084B, which enables measurements of converters with internal Los.

Embedded LO Capability (S96084B)

This application tunes the analyzer’s receivers to the output frequency of the converter under test without

the need for access to internal Los or a common reference signal. S96084B is intended to work with

S96082B and S96083B measurement applications.

1. When a comb generator is used as a phase reference for calibration and the start frequency of the measurement is less than

630 MHz, a user-supplied calibration mixer is required.

Gain Compression Measurements (S96086B)

The Gain Compression Application (GCA) provides input power, output power, gain, and phase at the

compression point of an amplifier or frequency converters, over a specified frequency range. GCA’s

SMART Sweep is very fast and easy-to-use. GCA also includes a guided calibration that corrects for

absolute power levels, frequency response, and mismatch errors.

Intermodulation Distortion Measurements (S96087B)

Using E5080B ENA

The Intermodulation Distortion (IMD) application makes it very easy to set up and calibrate swept-IMD

measurements of both amplifiers and frequency converters. It controls the frequency and power of

internal and external sources and tunes the receivers to the main tones as well as the IMD products in a

single measurement channel. You can sweep either the center frequency of the two stimulus signals, the

frequency spacing of the two stimulus signals about a fixed center frequency, the power of one or both

stimulus signals, or the power of the LO signal. The analyzer can measure intermodulation distortion

products of order 2, 3, 5, 7, or 9, and display the associated intercept points.

A 4-port E5080B with the internal second source option 4x2 is recommended for IMD measurements with

each built-in source generating one tone. The most common method with the E5080B is to use two

reference receivers for power leveling – the first tone signal (f1) is measured with the VNA’s one receiver

(e.g., a1 receiver of port 1), and the second tone signal (f2) is measured with another receiver (e.g., a3

receiver of port 3).

An external combiner (for example, hybrid power dividers 87302C, 87303C, or 87304C) is required to

combine the tones. Any of the remaining ports can be used as the receive port. A typical configuration for

IMD measurements with the 4-port E5080B-4x2 is shown.

Intermodulation Distortion Measurements (S96087B)

Using E5081A ENA-X

The Intermodulation Distortion (IMD) application makes it very easy to set up and calibrate swept-IMD

measurements of both amplifiers and frequency converters. It controls the frequency and power of

internal and external sources and tunes the receivers to the main tones as well as the IMD products in a

single measurement channel. You can sweep either the center frequency of the two stimulus signals, the

frequency spacing of the two stimulus signals about a fixed center frequency, the power of one or both

stimulus signals, or the power of the LO signal. The analyzer can measure intermodulation distortion

products of order 2, 3, 5, 7, or 9, and display the associated intercept points.

A 4-port E5081A is recommended for IMD measurements with each built-in source generating one tone.

The recommended method with the E5081A is to use one reference receiver for power leveling – both

first (f1) and second (f2) tone signals are measured with the VNA’s one receiver. Unlike the E5080B,

E5081A’s internal couplers can be directly accessed, so the couplers can be placed as close as possible

to input of the DUT. This configuration improves measurement accuracy of reflection measurements by

eliminating insertion loss associated with a combiner.

An external combiner (for example, hybrid power dividers 87302C, 87303C, or 87304C) is required to

combine the tones. Any of the remaining ports can be used as the receive port. A typical configuration for

IMD measurements with the 4-port E5081A is shown.