https://patents.google.com/patent/RU2526478C2/en Method and Device of Microwave Electromagnetic Impact at Trespasser
https://patents.google.com/patent/US7841989B2/en Electromagnetic Personnel Interdiction Control Method and System
https://patents.google.com/patent/CN106643287A/en Method and System for Eliminating Fighting Strength of Opposing Combatant Using Electromagnetic Wave
http://www.gbppr.net/mil/havana
You can use the microwave auditory effect with a modulation at the resonant frequency of the target's skull to "induce pain."