Building on its successful table-top Compact Antenna Test Range (CATR), Eravant offers a larger open-air CATR with a 600 x 600 mm rolled-edge reflector. Featuring a 300 mm diameter quiet zone for testing a variety of antenna types, the CATR includes a heavy-duty gimbal that supports loads up to 80 lbs. The gimbal provides ±72 arcsecond positioning accuracy with ±90-degree azimuth and elevation range.

The open-bed CATR is compatible with a variety of transmit and receive frequency extender modules using VNAs from vendors, including Copper Mountain, Anritsu, Keysight and Rohde & Schwarz. Eravant’s VNA frequency extender modules cover full and extended waveguide bands from 20 to 330 GHz with dynamic ranges as high as 120 dB. The receive frequency extender connects to the antenna under test (AUT) and travels with it during measurements. The transmit frequency extender drives a feed horn projecting spherical waves onto the reflector to produce plane-wave signals within the quiet zone surrounding the AUT. Eravant offers a wide selection of compatible feed horns with optional polarizers and mode transitions.

Machined from a solid aluminum block, the reflector includes a protective chemical finish that prevents corrosion and maintains high surface conductivity. The support structure, built from T-slotted aluminum framing, provides a secure and versatile component mounting system. The configuration enables precise feed horn location and orientation to optimize the quiet zone quality.

The supplied software can control different-sized gimbals and various VNA brands and models. It can also be customized to control additional devices and supports a wide variety of automated measurements for various needs.

The 300 mm CATR is model STY-CATR-0300-OB-S1, while the 150 mm version is model STY-CATR-0150-OB-S1. Both systems are available for evaluation through Eravant’s Antenna Measurement Services.

Eravant (formerly Sage Millimeter Inc.)
Torrance, Calif.
www.eravant.com