
Compact, Affordable mmWave Antenna Measurements
Any mmWave band. Small footprint. Low cost. Fully automated.
Copper Mountain Technologies and MilliBox have partnered to deliver a compact, affordable, and easy-to-use over-the-air (OTA) antenna measurement system. The modular design supports virtually any mmWave frequency band through interchangeable frequency extenders, eliminating the need for large, expensive anechoic chambers.
The turnkey system combines a compact anechoic chamber, a CMT VNA, and precision stepper motor-controlled antenna gimbals, fully automated by MilliBox software. Measurements are fast and straightforward, with multiple graphical display options, including 2D and 3D antenna radiation patterns, gain plots, and other OTA performance metrics.
Ideal for 5G/6G, automotive radar, satellite communications, and aerospace applications, this versatile solution brings sophisticated mmWave antenna testing directly to the engineering workbench at a fraction of the cost and space of traditional systems.
These comprehensive OTA solution bundle options provide a low-cost, space-saving solution that is ideal for antenna testing applications across automotive radar, aerospace, satellite communication, and similar industries.
The OTA bundle is an all-in-one solution that provides everything needed to accurately test a large number of 5G and sub-THz antennas. The combination of affordability and portability will enable multiple systems in a single lab environment for users to simultaneously test multiple antennas.
Modular
The solution can be customized with the number of boxes used in the system, giving users modular sections to adjust to far-field measurements or larger DUT size. MilliBox is constructed out of modular cubes which are combined to achieve the far field distance required. For example, MBX02 with two cubes gives a far-field distance of 77cm whereas MBX04 with four cubes can give you a far-field distance of 200cm. MBX0x products are constructed out of 24inch cubes and MBX3x products are made of 30inch cubes.
It is not necessary to purchase all of the modular sections at once, additional sections can be added later. The same is true for Copper Mountain Technologies’ frequency extension system. The base VNA can be purchased first and additional frequency extender modules can be added later to expand the testing range.


Flexible
Along with the customization, the software uses Python, an open-source code. The system works with whatever your test requires in regard to cables, horns, etc.
To fit testing needs, this whole solution from Copper Mountain Technologies and MilliBox is compatible with both Windows and Linux operating systems.
Accessible
Most systems fit easily on the bench. MilliBox ships flat and is collapsible for easy storage or transportation. Copper Mountain Technologies’ VNAs are also compact and don’t take up much bench space. The solution allows you to keep control of your space and keep your testing system easily accessible when you need to make measurements.

OTA Antenna Test Chambers available in collaboration with CMT, MilliBox, and Eravant:
MilliBox chambers compatible with Copper Mountain Technologies VNAs:
Copper Mountain Technologies announced an End-of-Sale (EOS) for the Cobalt Series VNA. This product is no longer available for purchase. We will provide service and repair for owners of this instrument for a minimum of 3 years from the EOS date or based on parts availability. The replacement for this series is the Advanced Series to 22 GHz VNA.
Copper Mountain Technologies VNAs compatible with MilliBox chambers:
- 133 dB Dynamic Range
- 12 µs/point Measurement Speed
- Compatible with ANY frequency extender
- 133 dB Dynamic Range
- 12 µs/point Measurement Speed
- Compatible with ANY frequency extender
- Direct Receiver Access
- Frequency range: 4 to 20 GHz
- RF output power: up to +20 dBm
- LO output power: up to +20 dBm
- Weight: 4.4Kg









