3 papers
astro-ph.IM2018
Reflectionless Filter Topologies Supporting Arbitrary Ladder Prototypes
Matthew A. Morgan, Wavley M. Groves, Tod A. Boyd
Modifications of the authors' previously-published, generalized, lumped-element, reflectionless filter topologies are presented which remove the original constraints on the relativ…
astro-ph.IM2018
Performance of a highly sensitive, 19-element, dual-polarization, cryogenic L-band Phased Array Feed on the Green Bank Telescope
D. Anish Roshi, W. Shillue, B. Simon +26
A new 1.4 GHz 19-element, dual-polarization, cryogenic phased array feed (PAF) radio astronomy receiver has been developed for the Robert C. Byrd Green Bank Telescope (GBT) as part…
astro-ph.IM2016
A Cryogenic SiGe Low Noise Amplifier Optimized for Phased Array Feeds
Wavley M. Groves, Matthew A. Morgan
The growing number of phased array feeds (PAF) being built for radio astronomy demonstrates an increasing need for low noise amplifiers (LNA) that are designed for repeatability, l…