Product Manual

ANT-106 Active Directional Antenna

A handheld active directional antenna. Sharp directivity and a switchable broadband preamplifier make the ANT-106 the field tool for direction finding and RF geolocation alongside ICX-FieldHawk analyzers. Automatic antenna factor loading means measurements are calibrated the moment you connect.

Doc ANT-106-PS · Rev V1.0 · Preliminary
ANT-106 active directional antenna

1Product Overview

The ANT-106 is a handheld active directional antenna covering a wide span of test and survey requirements in a single instrument. Its directional pattern concentrates sensitivity in the look direction, which is exactly what direction finding and signal source localization demand. Point the antenna, watch the level, and walk the bearing down to the source.

An integrated high-performance broadband amplifier lifts system sensitivity well above what a passive antenna alone delivers. A switchable Amp Off / Amp On control lets you trade gain for dynamic range on the spot, so strong nearby emitters and faint distant ones are both within reach. The antenna identifies itself to compatible analyzers and loads its antenna factor automatically, which removes a manual calibration step and the errors that come with it.

The housing is light and ergonomic. That matters on a long survey. Operators can carry and aim the antenna for extended outdoor sessions without fatigue, which keeps a geolocation sweep moving rather than stopping for rest.

ANT-106 active directional antenna, full view
ANT-106 active directional antenna.

2Key Features

  • Wide frequency coverage: 500 MHz to 10 GHz in a single antenna (verify).
  • Directional radiation pattern with 5 dBi passive gain (typ.) for clean bearing resolution.
  • Low noise figure: 1.5 dB (typ.), so weak signals stay above the floor.
  • Switchable amplifier: Amp Off / Amp On modes extend dynamic range to suit the scene.
  • Automatic antenna factor loading across compatible ICX-FieldHawk analyzers for calibrated readings on connect.
  • Light and portable: 680 g total weight (verify).
  • Ergonomic design built for extended outdoor use.
Direction finding, simplified. The combination of a directional pattern, a front-to-back ratio above 15 dB, and an onboard preamplifier lets a single operator establish bearings and close on an emitter without a separate amplifier or external calibration table.

3Specifications

Values below reflect the ANT-106. These specifications are preliminary and subject to verification against the published Berkeley Nucleonics datasheet. The frequency range and weight are flagged (verify): each is preliminary and pending confirmation against the published specification.

ParameterANT-106
Frequency Range500 MHz to 10 GHz (verify)
Gain5 dBi (typ.)
Half-Power Beamwidth66° @ 6 GHz
Polarization TypeLinear
Front-to-Back Ratio> 15 dB
VSWR< 2.0 (typ.)
Amplifier Noise Figure1.5 dB (typ.)
Amplifier Gain20 dB (typ.)
Maximum Measurable Field Strength17 V/m @ 6 GHz (Amp Mode)
RF ConnectionN (F), 50 Ω
Power SupplyUSB Type-C; connects to host via USB Type-C to USB Type-A cable
Calibration Points191 (50 MHz step)
Dimensions (L x W x D)430 x 270 x 35 mm
Weight680 g (verify)

4Gain & Antenna Factor

The plots below show measured passive gain and antenna factor across the band, with the amplifier off and on. Antenna factor is the value the analyzer applies to convert a measured port level into incident field strength, and it loads automatically when the ANT-106 is connected to a compatible ICX-FieldHawk analyzer.

ANT-106 gain versus frequency, amplifier off and amplifier on
Gain (dBi) versus frequency, amplifier off and amplifier on.
ANT-106 antenna factor versus frequency, amplifier off and amplifier on
Antenna factor (dB/m) versus frequency, amplifier off and amplifier on.

5Radiation Patterns

The directional pattern is what makes the ANT-106 useful for bearing work. The main lobe stays narrow across the band, and the back of the pattern is suppressed by more than 15 dB. As frequency rises the half-power beamwidth tightens, from roughly 84° at 4 GHz to 66° at 6 GHz and 60° at 8 GHz, which sharpens bearing resolution at the high end.

ANT-106 typical radiation patterns at 4, 6 and 8 GHz
Typical frequency-point radiation patterns: 4 GHz (HPBW 84°), 6 GHz (HPBW 66°), 8 GHz (HPBW 60°).

6Model Summary

The ANT-106 is a single active directional antenna built on a handheld platform with automatic antenna factor loading. The summary below collects the headline parameters in one place. The frequency range and weight are flagged (verify) as preliminary, pending confirmation against the published specification.

Specification ANT-106ANT-106
Frequency Range500 MHz to 10 GHz (verify)
Gain (typ.)5 dBi
Polarization TypeLinear
Front-to-Back Ratio> 15 dB
Amplifier Noise Figure (typ.)1.5 dB
Amplifier Gain (typ.)20 dB
RF ConnectionN (F), 50 Ω
Power SupplyUSB Type-C
Automatic Antenna FactorYes
Weight680 g (verify)
Verify before quoting. This is a preliminary summary. Confirm the frequency range, weight, and any other flagged value against the published Berkeley Nucleonics specification before sharing externally.

7Pairing with ICX-FieldHawk

The ANT-106 is an accessory for the ICX-FieldHawk family of real-time spectrum analyzers. Connect the antenna over USB Type-C, and the analyzer reads the antenna identity and loads the correct antenna factor without operator input. From there the analyzer reports incident field strength directly, which is what a geolocation or compliance survey actually needs.

For direction finding, the workflow is simple. Set the analyzer to the frequency of interest, switch the amplifier on for weak signals or off for strong ones, then sweep the antenna in azimuth and read the peak. The narrow main lobe and high front-to-back ratio give a clear bearing. Take bearings from two or more positions and the intersection fixes the emitter location. The ANT-106 pairs with handheld, rugged, and USB ICX-FieldHawk configurations for field, vehicle, and bench deployments.

One calibrated chain. Antenna factor loads automatically, so the antenna and analyzer behave as a single calibrated measurement chain from the moment they are connected.

8In the Box & Connections

Connections

  • RF output: Type N female, 50 Ω.
  • Power and data: USB Type-C, connected to the host with a USB Type-C to USB Type-A cable.

Physical

  • Dimensions: 430 x 270 x 35 mm (L x W x D).
  • Weight: 680 g total (verify).
  • Calibration: 191 calibration points at a 50 MHz step.
Items shipped, cabling, and accessory options are confirmed at order. Contact Berkeley Nucleonics to confirm the configuration for your ICX-FieldHawk analyzer.

9Support & Contact

For quotes, demonstrations, configuration help, or technical support, reach Berkeley Nucleonics directly. Our team can confirm specifications, recommend the right ICX-FieldHawk pairing, and arrange a field evaluation.

ChannelDetail
Emailinfo@berkeleynucleonics.com
Phone800-234-7858
Webberkeleynucleonics.com