B5G R&D Project for Future Japanese LEO Constellation Satellite Communication System (These research results were obtained from the commissioned research (JPJ012368C06701) by NICT, Japan.)

・A Q/V-band on-board digital beam forming (DBF) array antenna.
It enables flexible channel/beam assignment in response to traffic fluctuations in normal/disaster operations.
・Compact transmitter/receiver within 5mm height and width for millimeter-wave DBF array antenna modules.
Direct Digital RF architecture brings the module size reduction and allows the use of COTS for cost reduction.