Challenges in Realizing Shared-Aperture SATCOM Terminals
The emergence of LEO satellite constellations takes advantage of reduced signals path loss and signal latency, as a result, communication quality and user experience are expected to be improved. Meanwhile, due to the fast motion of the LEO satellites, low cost ESA terminals with multi-beam capability become essential. In this talk, we introduce two recent work to tackle multi-beam and shared aperture scenarios, aiming at form factor critical applications. The multi-beam development steers energy and axial ratio of the main beams at the same time using subarray, and removes grating lobes with a virtual chip concept. The shared aperture development combines Ka-band Tx and K-band Rx arrays in SATCOM terminals, measured results show a +/-60-degree scanning range for Rx and +/- 35-degree scanning range for Tx.
