Patents for such microwave-type weapons do exist: https://patents.google.com/patent/RU2526478C2/en https://patents.google.com/patent/RU2526478C2/en Method and

Patents for such microwave-type weapons do exist: https://patents.google.com/patent/RU2526478C2/en https://patents.google.com/patent/RU2526478C2/en Method and Device of Microwave Electromagnetic Impact at Trespasser https://patents.google.com/patent/US7841989B2/en https://patents.google.com/patent/US7841989B2/en Electromagnetic Personnel Interdiction Control Method and System https://patents.google.com/patent/CN106643287A/en 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 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."