Well, this sucks for Germany. Intel's GSM radio division is formerly Infineon, AFAIK still located in Germany. There wasn't much state of the art microelectronics left in Germany anyway (correct me?).
But for everything else, like IoT, Sensors, Power, you can find plenty of companies and subsidiaries in Germany: Infineon, Bosch, GlobalFoundries, NXP, Dialog, Elmos, Melexis, Xfab, AMS, IDT (ZMDi), TI, Intel, TDK (Micronas) and many smaller ones.