A Tale of Two Phases: An Overview of Phase-Change Material RF Switch Technology: Sub-20-fs RON*COFF RF Switch Technology for the Mm-Wave and 5G/6G Revolutions

It was the lowest of R
_ON
*C
_OFF
, the highest of F
_CO
, it was a time of unbridled optimism, it was a time of insurmountable challenge, there was knowledge of the crystalline, and ignorance of the amorphous, elegance in operation, and ugliness in reliability, there was hope with integration, yet despair with power handling, it was going to revolutionize the industry, only to disappear before it had a chance…