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Waveguide Harmonic Mixers M1971E/V/W

Technical Overviews

Keysight Technologies

Waveguide Harmonic Mixers

M1971E: 55/60 to 90 GHz

M1971V: 50 to 75 GHz

M1971W: 75 to 110 GHz

Technical Overview

Introduction

The Keysight Technologies, Inc. M1971E/V/W waveguide harmonic mixer is an unpreselected mixer that is designed to extend the frequency of Keysight’s high-performance signal analyzers (N9040B UXA, N9030A PXA, N9020A MXA and N9010A EXA) and S-series oscilloscopes (MSOS404/604/804A and DSOS404/604/804A) for millimeter-wave applications up to 110 GHz. The M1971E/V/W works ideally for applications in the area of 5G design and development, WiGig/11ad, automotive radar and millimeter-wave microwave backhaul that require wideband millimeter-wave signal analysis of more than 2 GHz.

Embedded with smart features, the mixer provides fast and the most efficient test setup with measurement accuracy that’s needed in the demanding mixer application test environment. The M1971E/V/W uses a simple USB plug-and-play connection that can automatically configure the X-series signal analyzers to detect the specific mixer connected, then download the conversion loss data and automatically compensate for the local oscillator path loss. Therefore, it greatly shortens the overall startup process and technically improves the overall DANL and TOI of your test systems with excellent conversions and amplitude accuracy.

Break free from the conventional harmonic mixing test method and discover a smarter solution by using the M1971E/V/W waveguide harmonic mixer in combination with the X-Series signal analyzers.

Go smart with harmonic mixing

Smart features:

  • Auto amplitude correction and transfer of conversion loss data through USB plug and play features
  • Auto LO amplitude adjustment to compensate for cable loss (up to 3 m or 10 dB loss)
  • Vector correction data includes magnitude and phase improving EVM measurement
  • Auto detect mixer model/serial number when used with X-series signal analyzers:
  • Auto setting of default frequency range and LO harmonic numbers
  • Auto LO alignment during start up
  • Auto run calibration when time and temperature changes

Operation modes

The operation of the M1971E/V/W mixers can be categorized into three modes.

  • Normal path

This path should be used for I/Q measurements. The mixer provides approximately 1.2 GHz IF bandwidth. The mixer’s IF frequency supplied to the host signal analyzer depends on the host IF path selected.

  • Dual conversion path

Provides the widest image-free range since the first conversion is to a higher IF frequency, and the mixer uses the host signal analyzer’s 10 MHz external reference out to generate second LO signal IF down-conversion. Intended only for swept measurements of wideband modulated carriers. The mixer’s IF bandwidth is wide enough to support all host instruments resolution bandwidth settings, but not wide enough for I/Q acquisitions.

  • Auxiliary equipment path

The mixer down-converts the input signal to an IF frequency defined by the user, and this IF is available at a separate mixer output port for connection to external equipment, such as an oscilloscope. The signal analyzer’s signal path is not used, since the signal analyzer only provides an LO signal to the mixer. This path is designed for I/Q acquisitions of bandwidths wider than those supported by the internal instrument IF path. Since the signal analyzer’s signal path is not used, there is no signal identification or automatic amplitude correction for mixer conversion loss and IF flatness. You must determine which signals are real and which are images or multiples. The mixer’s conversion loss and IF flatness data for this path is contain in a file on the signal analyzer.

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