A Review of 90 Degree Corner Design for High-Speed Digital and mmWave Applications

The design of 90 degree corners has been an important topic since the start of microwave design several decades ago. With the arrival of standards like 400Gb Ethernet, 5G and WiGig, engineers are now required to create PCB designs with signals in the mmWave frequency range for consumer applications. In this paper we will do a quick review on the design of right angle corners for PCB construction and present some measurement results.