Mobile telecommunications services require a continuous and exponential increase of their capacities. To meet this demand, transceivers must be highly digital and flexible. A promising solution to achieve this goal is to use Walsh sequences to generate arbitrary waveforms. This is based on the principle of a ”software defined radio”. Transmitter comprising a high-speed, high-resolution DAC. Thus, the studied architecture consists of a very wide band DAC (0 to 6 GHz) very efficient for a direct RF amplification with 5G phase 1 applications as target and a Hilbert Transform based signal shaping for a millimetric frequency upconversion (beyond 20GHz) without resorting to complex filtering techniques with 5G phase 2 or 6G applications as target. The objective of this work is to propose a new transmitter topology that responds to issues such as: massive data conversion (very high throughput), carrier aggregation and dynamic linearization of an RF front end.
