Sharp has built a state-of-the-art anechoic chamber in Japan to measure the performance of flat panel antennas for LEO and MEO satellites. Using the Compact Antenna Test Range (CATR) method, the chamber simulates long-distance communication conditions, such as those encountered in satellite communication, over a short physical distance. It is also capable of accommodating one of Japan’s largest antennas, with an aperture of up to 80 cm.
Designed with high-quality radio wave-absorbing materials on the ceiling, walls, and floor, and equipped with parabolic reflectors, the chamber suppresses unwanted reflections and measures performance over a short distance. While typical chambers require over 60 meters to test an 80-cm aperture antenna, Sharp’s CATR-based setup achieves accurate measurements over approximately 7 meters across a frequency range of 10 GHz to 40 GHz.
In addition to supporting Ku/Ka bands used for satellite communications, the anechoic chamber also accommodates measurements in the upper mid-band (FR3 6 GHz to 24 GHz), a potential frequency range for 6G deployment. The new chamber facility, launching this month, will enable testing and technical verification of various products, including next-generation smartphones.
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