Thick-Film Pastes Allow Manufacturing of Compact Circuit Boards for 5G Applications
Researchers from the Fraunhofer Institute for Ceramic Technologies and Systems IKTS will exhibit new PI pastes at Productronica in Munich from November 12 to 15 (Hall B2, Booth 228). For many years now, miniaturization has been the main driver of the electronics industry. This is particularly true for ceramic-based circuit boards, which have properties that make them especially suitable for high-frequency circuits. Increasingly demanding technical requirements have exposed the limits of the classic thick-film technologies used for the production of circuit-board conductors. Now, however, a new generation of thick-film pastes and their photolithographic structuring enable the manufacturing of extremely high-resolution thick-film structures necessary for 5G applications. Moreover, this process is suitable for mass production and industrial applications while maintaining low investment costs and only minimally extending production times.
The next generation of mobile internet and mobile telephony is about to arrive: the fifth generation - or 5G. South Korea, Switzerland and a number of U.S. cities have already started using 5G. In Germany, the licenses for this standard were auctioned in June 2019. The new technology also means that the electronics used for transmitting and receiving signals will have to be much more finely structured than is currently the case. This applies equally to antennas, which will initially operate at a frequency of 3.6 GHz, before moving to higher frequencies. In terms of miniaturization, the thick-film technology currently used to produce this circuitry has now reached its limits. As far as industrial applications are concerned, a resolution of around 50 micrometers is the absolute limit for this method. In plain terms, this means that the single electrical structures, such as conductors, are minimum 50 micrometers wide. The 5G standard, however, requires circuitry as fine as 20 micrometers and less. Click here to read more.