Today it is possible to design a multiband, direct access microwave transmit path using the latest broadband DAC product from Teledyne e2v semiconductors. This discussion highlights significant benefits of multiband direct access and explores the pros and cons of an experimental prototype relative to a traditional heterodyne design.

Microwave direct access technologies look set to transform microwave radio infrastructure over the next decade in a move likely to fuel a burst of innovation in terms of multi-mode mission profiles supported from spaceborne platforms to advanced, highly-agile cross-band frequency hopping systems. Megatrends drive this progress forward including an insatiable demand for data on the one hand and growing momentum in terms of the commercialization of space.

A confluence of several technology enablers flags this rapid advancement, so we have reached a critical moment when designers probably need to start to reassess their assumptions about microwave spectrum management.

The webinar will initially consider the microwave spectrum and the typical applications it serves with a particular focus on SAR Earth observation programs. The most significant technology enablers will then be considered, the recent trend pointing to the need to adopt a high-speed semiconductor alternative to RF CMOS to advance the state-of-the-art in data conversion. It is also possible that, in future the best design option will rely on SiP assemblies.

In reviewing design options, the webinar moves on to consider frequency planning from DC to Ka-band a range covered by next generation product options. Ultimately a direct access transmitter design is planned for development that appears to promise a 3:1 reduction in frequency control components.