There is a cheap brandless ESP32 circuit board that comes with a 320 x 240 LCD display with touch that a number of Chinese businesses seem to be selling, also via AliExpress and Amazon. There's a ...
Abstract: This paper presents a $27.5-31.5 \mathrm{GHz}$ single-aperture-integrated low-profile 64-element 4-beam phased array, which incorporates 16 Ka-band 8-element 4-beam transmitter front-end ICs ...