Accessories

Technologies driving 5G networks include wider bandwidths; millimeter-wave frequencies; and massive multiple input / multiple output (MIMO), beamforming control, and data channels. MIMO leverages multipath transmission in urban environments and beamforming systems that focus energy transmissions to optimally target specific users. Targeting specific users reduces base station power consumption and enables high signal-to-noise links necessary to overcome millimeter-wave channel losses. These advanced technologies dramatically increase the complexity of the radio access network.

5G operators and network equipment manufacturers need new over-the-air test tools for network and user equipment field tests, as well as optimization tools to deploy and verify the performance of these networks. Keysight’s FieldFox handheld microwave analyzer, combined with a phased array antenna, provides a unique, portable solution for measuring and analyzing the 5G air interface in the field.

This 64-element, single-polarization 5G phased array antenna covers the 27.5 to 30 GHz frequency band. A planar antenna, supporting multiple beam widths, can be used for channel equalization, RF probing, and signal-to-noise ratio enhancement. It can be used as a standalone component or combined and synchronized with other arrays to support hybrid beamforming and MIMO functionality as part of a larger array.

• 27.5 to 30.0 GHz (operating frequency of 28 GHz when connected to FieldFox)
• 8 x 8 phased array antenna
• Individually calibrated elements, magnitude, and phase
• Beam sweep -60 to +60 azimuth, 90° elevation with 1° per step
• 2.92 mm female RF interface

Radio EMF testing is necessary to evaluate total RF exposure in any given area due to deployment of various RF / microwave networks, such as mobile phones, base stations, Wi-Fi^®, smart meters, IoT devices, and satellite and radar systems. Exposure levels set by government and regulatory agencies require verification in the field for compliance.

The Keysight FieldFox Option 358 measurement application, connected to the Keysight 85572A EMF triaxial isotropic antenna, enables EMF measurements in spectrum analyzer and in over-the-air (OTA) 5G New Radio (NR) modes. Additionally, with FieldFox Option 370 or 371, the EMF measurements can be made in OTA LTE FDD or TDD mode, respectively. The total field strength is measurable across the frequency band of interest.

Key Features

• Enables EMF measurements using FieldFox handheld analyzers, Keysight Option 85572A-006 manages 400 MHz to 6 GHz, or use Keysight Option 85572A-007 for 30 MHz to 6 GHz.
• Supports spectrum analyzer EMF channel power measurements.
• Displays the impact of the 5G signal over the total RF exposure for 5G NR control channel EMF measurements, which require OTA 5G NR application (Option 378) available for the FieldFox B / C-Series.

N9910X RF and microwave handheld accessories complement Keysight's installation and maintenance test tools.

These accessories provide you with a complete solution when using Keysight tools for your measurement needs.

The Keysight 85574A serves as a portable wideband antenna, functioning across a frequency range of 20 MHz to 8.5 GHz. Designed primarily for RF direction-finding and transmitter hunting, it seamlessly integrates with the Keysight FieldFox handheld spectrum analyzer equipped with Option 366, the interference-finding (manual) application, and Option 307, the GPS receiver. This combined setup empowers network managers to efficiently pinpoint sources of RF interference.

• Provides a compact, light design that's easy for a single person to operate.
  
• Delivers wideband performance in a practical size.
• Supports horizontal and vertical polarization.
• Offers precise bearing to source with a digital compass.

N9311X RF and Microwave Accessory Kit complements Keysight's low-cost handheld and benchtop solutions (N9330B, N9340B, N9310A, N9320B, N9000A). These accessories provide you with a complete solution when using Keysight low-cost handheld and benchtop solutions for your measurement needs.

	N9311X-100 close field probe set, 30 MHz to 3 GHz
	N9311X-201 Mechanical calibrator (3-in-1 OSL), DC to 7 GHz, 42 dB directivity, 50 Ω, N(m)
	N9311X-500 retractable whip antenna, 70 MHz to 1000 MHz, type N(m)
	N9311X-504 directional antenna, Log Periodic, 700 MHz-4 GHz, type N(m)
	N9311X-508 directional antenna, Log Periodic, 680 MHz-8 GHz, type N(m)
	N9311X-518 directional antenna, Log Periodic, 680 MHz-18 GHz, type N(m)
	N9311X-540 Adapter, Type-N(m) to BNC(f), DC to 2 GHz
	N9311X-541 Adapter, Type-N(m) to SMA(f), DC to 12.4 GHz
	N9311X-545 Adapter, Type-N(f) to SMA(m), DC to 12.4 GHz
	N9311X-SCC Soft carrying case with backpack and shoulder strap for N934x HSA handheld spectrum analyzers

The Keysight 85320B reference mixer module downconverts microwave signals to IF signals when used with the 85309B LO/IF distribution unit.

• Broadband operating from 300 MHz to 3 GHz, 1 to 26.5 GHz
• For 2 to 50 GHz, a special option 85320B-H50 is required. Please contact a Keysight representative for more information.
• Fundamental mode from 2 to 18 GHz provides best sensitivity and lowest conversion loss
• Leveling coupler/detector provides leveling signal to 85309B, ensuring leveled LO drive power to the mixer

The Keysight 85320A test mixer module downconverts microwave signals to IF signals when used with the 85309B LO/IF distribution unit.

• Broadband operating from 300 MHz to 3 GHz, 1 to 26.5 GHz
• For 2 to 50 GHz, a special option 85320A-H50 is required. Please contact your Keysight representative for more information.
• Fundamental mode from 2 to 18 GHz provides best sensitivity and lowest conversion loss
• Diplexer combines LO input and IF output onto a single coaxial connector

The N5280A is a four-channel frequency converter test set. This test set is used with the N5242A 2-Port or 4-Port PNA-X network analyzer and the N5264A measurement receiver.

• unity gain
• IF port frequency range:
  0.007 to 20 MHz (with jumper, low frequency path output)
  0.007 to 1.5 GHz (without jumper, Max bandwidth)

The Keysight 85309B LO/IF distribution unit used with 85320A/B mixers downconverts a microwave signal to an IF signal.

• Allows mixers to be located at the antenna under test
• Allows fundamental mixing to 18 GHz for best sensitivity
• Provides best rejection of unwanted spurious signals
• Channel-to-channel isolation of 100 dB

The N5281A is a four channel frequency converter test set. This test set is used with the N5242A 2-Port or 4-Port PNA-X network analyzer and the N5264A measurement receiver.

• IF port frequency range: 0.007 to 30.0 MHz

Maximum power levels

RF input power damage levels

• RF port: +18 dBm
• LO port: +5 dBm
• optimum LO power: 0 dBm (±1 dB)

• 10 MHz to 50 GHz: -10 dBm

• 10 MHz to 26.5 GHz: 5 dB to -10 dB
• 26.5 MHz to 50 GHz²: -10 dB to -20 dB

• 20 MHz to 6 GHz; best performance from 350 MHz to 6 GHz with drop off below 350 MHz
• 17 inches long
• uniform radiation patterns
• antenna factor N6850A (Excel file)

The N6850A is a passive, omnidirectional antenna for receivers that operate up to 6 GHz. It is for use with the N6841A RF Sensor, handheld spectrum analyzers, spectrum analyzers, or any receiver. Items comes with a mounting bracket for pole, rail, or tripod mount, and a Type N cable.

Field-based engineers need precise millimeter-wave (mmWave) measurements to advance modern wireless communications and radar systems. This precision is critical for 5G, 6G, aerospace and defense, and automotive radar transmission / receiving tests. Keysight FieldFox addresses this issue. It enables mmWave measurements in a lightweight, portable solution, when paired with the Keysight N9910XVDI frequency extender modules. This mmWave solution covers up to 90 GHz and beyond¹, offering a viable and cost-effective tool for mmWave signal analysis in field and lab environments.

• Expanded frequency coverage: Expand FieldFox’s frequency coverage from as low as 18 GHz, depending on models, up to 90 GHz and beyond for signal analysis.
• Optimized performance at the mmWave range: Support in-band signal analysis with the selection of spectrum analyzer mode, IQ analyzer mode, or real-time spectrum analyzer (RTSA) mode.
• Cost efficient: Reduce costs by half or more compared to traditional mmWave signal analysis solutions using FieldFox and VDI frequency extenders.
• Portable and convenient testing: Make mmWave field testing more feasible for field and lab environments using FieldFox with VDI frequency extenders, which together weigh less than 4 kg.
• For detailed technical information refer to VDI PSAX web site.

¹ For WR15 (50 to 75 GHz) and WR12 (60 to 90 GHz), order N9910XVDI-W15 and N9910XVDI-W12, respectively, under model number of N9910XVDI from Keysight. Beyond 90 GHz up to 170 GHz, order PSAX directly from VDI.

² For the combo analyzers, spectrum analyzer option (option 233) is required.