AC888 Antenna Test Chamber

Anechoic test chamber for radar, mmWave, and 5G NR Over-The-Air (OTA) measurements

Horizontal / Vertical Test Chamber

The AC888 is a compact and flexible radar and mmWave chamber for antenna test and measurements. It can be placed in the standard horizontal way, but it is designed to also support vertical use. This is a valued feature for small labs and customers who need multiple chambers side by side.

The chamber is large and offers 55 cm (2’ 2”) internal tip-to-tip distance between the absorbers in height and width.

We use best-in-class absorbers for our chambers, and the AC888 is no exception, with absorbers rated at -50dB from 18 GHz up to 110 GHz and beyond. The exterior length of the AC888 is 180 cm with its interior distance between absorber tips of 157 cm.  For details on far-field distances vs antenna sizes and frequencies, please visit our far-field overview.

AC888 test chamber by mmWave Test Solutions
We sized the AC888 to fit with the typical phased array antenna sizes, weights, and use cases in the mmWave and radar domain. The chamber is pre-cut for mounting the DUO3 or the DUO4 positioner, so you can choose the positioner which suits your test requirements best.
The AC888 uses the same construction principles as in the AC1120, with an interlocked modular panel system to create a robust self-supporting construction. The self-supporting construction prohibits a wobbly construction and it is the best approach when a chamber reaches this size, and it makes it possible for the AC888 to be placed either horizontally or vertically.
We design and produce custom accessories for all our chambers and can make unique cutouts to fit your test equipment if required. Contact us and let us know what modifications you need.
Horn mount and trihedral mount for test chambersl
Accessories

Floor mounts and wall mounts are available for different horns and trihedral reflectors. The chamber has plenty of room below it for your instruments, and it even has an outside shelf monted to the target wall for instruments.

The chamber ships with two stands and two sets of closures; one for vertical use and one for horizontal.

A complete antenna measurement system

The DUO3 and DUO4 antenna positioners, combined with the AC888 chamber, form an attractive test solution for radar and mmWave antenna test and measurement. The DUO3 and DUO4 antenna positioners/gimbals solve two different test requirements (see the finer details here), but use the same intelligent controller and reference application software.

Contact us for more info on how we can meet your needs: info@mmwavetest.com

Test chambers and positioners by mmWave Test Solutions
The main differences between AC888-180 and AC1120-240

Size – The AC888 has a smaller footprint than the AC1120, and tighter internal dimensions; see the table below.

Cost –  The AC888 chamber is a cost-down version of the AC1120: Same quality but lower manufacturing cost.

Modularity – Individual panels for both chambers, but only the AC1120 can be extended.

If you are not sure which one for you, the AC888 or the AC1120, you should read our FAQ that covers the detailed considerations. We are pricing our chambers and positioners competitively, even against the DIY scenario, which – as it turns out – most often is an expensive route to choose.

We constantly have new developments ongoing. If  you can describe your specific requirements and test setup, we can provide you with a proposal and quote, even for the products not yet listed on our website. Contact us at info@mmwavetest.com for more information.

AC888 and AC1120 test chambers compared
Configuration examples
 DescriptionExterior dimensionsInternal dimensions tip-to-tipDoor modulesExtension modulesFar-field distance*Suitable positioner

AC888

AC888 test chamber

1 module

180 cm long

W 90 cm

H 90 cm

L 183 cm

W 56 cm

H 56 cm

L 157 cm

1 unit with

Two doors

135 cm

DUO3

DUO4

AC1120-180

2 modules

180 cm long

W 115 cm

H 115 cm

L 183 cm

W 89 cm

H 89 cm

L 157 cm

2 units135 cm

DUO3

DUO4

DUO5

AC1120-240

AC1120M mmWaveTest chamber

2 modules

240 cm long

W 115 cm

H 115 cm

L 243 cm

W 89 cm

H 89 cm

L 217 cm

2 units195 cm

DUO3

DUO4

DUO5

AC1120-360

AC1120M-360 mmWave test chamber

3 modules

360 cm long

W 115 cm

H 115 cm

L 363 cm

W 89 cm

H 89 cm

L 337 cm

2 units1 unit315 cm

DUO3

DUO4

DUO5

AC1120-480

AC1120M extended mmwave test chamber

4 modules

480 cm long

W 115 cm

H 115 cm

L 483 cm

W 89 cm

H 89 cm

L 457 cm

2 units2 units435 cm

DUO3

DUO4

DUO5

AC1120-EXT120

AC1120M Extension module

Extension module

120 cm long

 

W 115 cm

H 115 cm

L 120 cm

W 89 cm

H 89 cm

L 120 cm

+120 cm

AC1120-High Stand

AC1120 stand / foot

W 97 cm

H 65 cm

L 165 cm

AC1120-Low Stand

AC1120M low stand

W 97 cm

H 37 cm

L 165 cm

*Depending on positioner DUT arm depth.

Contact us for more information about test solutions: info@mmwavetest.com

Absorber performance

Reflection loss at vertical incidence (-dB @ GHz)

236101824396077100110

115 mm

2528364150505050505050
DUO5 antenna positioner by mmWaveTest

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

The DUO positioners and the Diamond Engineering DC402 positioner fits perfectly in the AC 888 and AC1120 chambers.

Read more here.

Diamond Engineering DC402
Need a walk-in sized, modular antenna test range?

Read about the mmWaveTest AC1124.

AC1224 antenna test range by mmWaveTest