The focus of this work is to theoretically study and develop specific photonic-based hybrid or/and monolithic integrated functions operating in the microwave (300 MHz - 300 GHz) frequency band in order to respond to the always growing demand for higher data rate transmission. Next generation fixed wireless technology using radio over fiber technologies for high data rate applications with world record transmission capacities will be demonstrated. For the first time, the presented technologies enable the construction of wireless links operating at transmission speeds previously only known from fiber-optic communications. This capability will be of great value for future mobile backhauling, disaster recovery and temporary high capacity wireless links. At the same time, the proposed photonic-based microwave technologies will be shown, to be also of great value to a number of other generic application fields including sensing, instrumentation, health-care, medical applications and radio-astronomy.