AC1120 Antenna Test Chamber

Modular anechoic chamber for radar, mmWave, and 5G NR

Radar and mmWave Test Chamber for Large DUTs

The AC1120 is a spacious chamber with more than 90 cm (~3 feet) internal distance between absorber tips in both height and width. In addition, the length is expandable from 180 cm and upwards to increase far-field distance.

Best-in-Class Absorber Performance

We use best-in-class wide-range absorbers for all demanding mmWave and radar test applications. It is high-performing and rated excellently up to 110 GHz and beyond.


The AC1120 mmWave test chambers have options of floor- and wall-mounts for horns and trihedral reflectors, wave arrestors, fittings for air circulation, moving targets for radar detection, outside shelves for your instruments, vertical chamber mounting, and much more.

mmWave Test chamber AC1120M
We design and produce custom accessories as well, and can make special cutouts to fit your test equipment if required. Contact us and let us know what you are looking for.
AC1120M_test chamber corner
Well-designed, Robust Antenna Test Chamber

The mmWave test chamber is a modular design using individual panels, all tapped together with interlocking CNC’ed wooden joints and held in place by a clamp system. The design makes it fast to assemble and disassemble the AC1120M, while it still being a stable and rigid construction.

Unpacking and assembling the AC1120 antenna test chamber can be completed in less than an hour.

The chamber is a solid design with CNC-machined precision and made from furniture-grade Baltic birch plywood. All hinges and locks are custom designed for the chamber with ball bearing inserts for reliable performance year after year. 

Ready for Manufacturing Environments

The AC1120 can be fitted with front- and side-loading systems for production test efficiency. These add-ons are designed to ease testing in volume production, and are produced in aluminum with linear rails. This secures reliable performance year after year without wearing down.

Some EMS providers require their customers to ESD-protect chambers for the EMS production facilities. You no longer need an expensive steel chamber to meet this requirement.  We can deliver the AC1120 antenna test chamber with an ESD-protective coating and ESD ground connections.

Contact us for more info on our production solutions:

Production ready AC1120M mmWaveTest chamber
A flexible, modular construction

The basic AC1120 chamber is constructed from two symmetric modules mounted on a high or low stand.

There are two sizes of basic chambers. The AC1120-180 is 180 cm (6 feet) long and made of two 112 x 112 x 90 cm modules. The AC1120-240 is made with two 112 x 112 x 120 cm modules. It is a 240 cm (8 feet) long chamber, and by adding individual 120 cm (4 feet) modules it is expandable to 360 cm (12 feet) and beyond.

All modules are joined with long latches with a jigsaw-puzzle pattern to form a strong, yet elegant, joint between the modules. This flexible structure can be expanded as requirements grow.

Furthermore, since the modules are symmetric, the doors can be mounted on opposite sides or even 90-degrees rotated. Each chamber half is moveable by hand, so reconfiguration does not require full disassembly of the chamber.

AC1120M extended mmwave test chamber
Configuration examples
 DescriptionExternal dimensionsInternal dimensionsDoor modulesExtension modulesFar-field distance*


2 modules

180 cm long

W 112 cm

H 112 cm

L 180 cm

W 92 cm

H 92 cm

L 160 cm

2 units135 cm


AC1120M mmWaveTest chamber

2 modules

240 cm long

W 112 cm

H 112 cm

L 240 cm

W 92 cm

H 92 cm

L 220 cm

2 units195 cm


AC1120M-360 mmWave test chamber

3 modules

360 cm long

W 112 cm

H 112 cm

L 360 cm

W 92 cm

H 92 cm

L 340 cm

2 units1 unit315 cm


AC1120M extended mmwave test chamber

4 modules

480 cm long

W 112 cm

H 112 cm

L 480 cm

W 92 cm

H 92 cm

L 460 cm

2 units2 units435 cm


AC1120M Extension module

Extension module

120 cm long


W 112 cm

H 112 cm

L 120 cm

W 92 cm

H 92 cm

L 120 cm

+120 cm

AC1120M-High Stand

AC1120 stand / foot

W 97 cm

H 65 cm

L 165 cm

AC1120M-Low Stand

AC1120M low stand

W 97 cm

H 37 cm

L 165 cm

*With the mmWaveTest DUO5-300 positioner.

Contact us for more information about test solutions:

Absorber performance

Reflection loss at vertical incidence (-dB @ GHz)


115 mm

mmWaveTest DUO5-500 positioner

Need a high-accuracy positioner for large or heavy DUT’s?

The DUO5 and DC402 positioner fits perfectly in the AC1120M chamber.

Read more here.

Diamond Engineering DC402
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