6 Questions 262 Answers 0 Followers
Questions related from Raymond Rumpf
Does anybody have a photograph of the famous Rudolf Karl Luneburg, who invented the Luneburg lens?
14 September 2020 6,586 3 View
Do the bands of a photonic crystal (or semiconductor) ever cross? If not, why not? If so, is there any special physical phenomenon that occurs at the crossing? And...if two bands cross, how do...
28 February 2018 595 3 View
I am curious about everybody's take on the state-of-the-art on design and classification of metamaterials. Suppose I wish to identify a metamaterial with a specific permittivity and...
23 May 2017 3,600 4 View
I am working with a team to explore some new concepts for integrated optical waveguides that may significantly improve bend loss and coupling into and out of the waveguides. We are looking most...
10 December 2015 4,070 4 View
The ground plane is ubiquitous in modern high frequency circuits and it does much to help form circuit elements, isolate components, and keep signals clean. While there is always some debate...
12 October 2015 7,589 4 View
I am new to the field of MIMO, but we are working on a new technique to decouple multiple antennas that are in close proximity. As I understand it, ECC=0 means the antennas are completely...
20 January 2015 5,234 5 View
