A 122 GHz Microstrip Slot Antenna with via-fence resonator in LTCC technology

A Microstrip Slot Antenna with a resonating cavity created by a via-fence is presented. The antenna is manufactured in Low Temperature Co-fired Ceramic (LTCC) technology using Ferro A6-S tapes. Measurement results of a prototype are given and compared to simulations. The antenna can be integrated into a Ball-Grid-Array Package with a MMIC to realize a surface-mountable 122 GHz Radar sensor.