The book is a dissertation entitled “Design of Fully Integrated 60 GHz OFDM Transmitter in SiGe BiCMOS Technology.” It presents transmitter design for wireless communication in the ISM band at 60 GHz for speeds of several Gbit/s. It is focused on design of transmitter components, which are critical for the performance of the whole analog front–end. Phase-locked loop phase noise optimization is presented. A new optimized recipe for calculating phase-locked loop parameters of a forth order PLL is presented, resulting in the spurious sideband reduction by up to 10 dB. The design of integrated image–rejection filters with low quality factor of the integrated resonators is presented. The challenges related to the design of mm-wave power amplifiers with high P1dB are analyzed and the procedure of the PA design is presented. The fully integrated transmitter was used for data transmission with data rate of 3.6 Gbit/s (with coding 4.8 Gbit/s) over 15 meters. This is the best result in the class of 60 GHz analog front–ends without beamforming.