A radar device 10 comprising a RF signal source 12 (RF = radar frequency), two or more antenna interface units, a feed network 13, and a control unit 15 is described. The RF signal source 12 is arranged to provide a RF signal; each of the antenna interface units comprises an antenna port 21; 23; 25; 27 and one of the following 22; 24; 26; 28: an amplifier and a mixer; wherein the amplifier is arranged to amplify the RF signal and to provide it to the antenna port and the mixer is arranged to generate an intermediate frequency signal by mixing the RF signal with a reception signal received via the antenna port 21; 23; 25; 27; the feed network 13 comprises two or more buffers 36, 38, 40, 42, each buffer has an active state, in which the buffer is transmissive for the RF signal, and an inactive state, in which the buffer is substantially nontransmissive for the RF signal; the control unit 15 is arranged to generate or receive a selection signal (SEL) which specifies none, one 22, or more 22, 24 of the antenna interface units 22, 24, 26, 28 as active antenna interface units and the remaining none, one, or more antenna interface units 22, 24, 26, 28 as inactive antenna interface units; the control unit 15 is arranged to activate and deactivate the buffers in dependence on the selection signal so as to feed the RF signal to the none, one, or more active antenna interface units and not to the none, one, or more inactive antenna interface units. A method of operating a radar device is also proposed.

Yi Yin

Papers

Radar device and method of operating a radar device