33 citations · 61 across the 10 of their papers we have counts for
10 papers
The Anatomy of RF Chains: Metrics, Measures, and Operating Efficiency
Leonid Belostotski, Arjuna Madanayake, John Nielsen +6
In 1958, Haus and Adler [1] introduced the concept of noise measure. Noise measure is a single quantitative metric that provides a comprehensive basis for comparing devices (indivi…
Overview of the Canadian Hydrogen Observatory and Radio Transient Detector (CHORD) Project
The CHORD Collaboration, Kevin Bandura, Leonid Belostotski +49
The Canadian Hydrogen Observatory and Radio-transient Detector (CHORD) is a next-generation wideband radio interferometer currently being constructed and commissioned at the Domini…
0.3-to-1.5-GHz LNA with Wideband Noise and Power Matching for Radio Astronomy
Mark Lai, Vincent MacKay, Dallas Wulf +2
This paper presents a low-noise amplifier (LNA) that was developed for a new radio telescope comprised of 512 parabolic dish antennas. The LNA closely interfaces to a custom-made a…
General Framework for Array Noise Analysis and Noise Performance of a Two-Element Interferometer With a Mutual-Coupling Canceler
Leonid Belostotski, Adrian T. Sutinjo, Ravi Subrahmanyan +2
This article investigates the noise performance of a two-element phased array and interferometer containing a recently introduced self-interference canceler, which in the context o…
Fano-Qubits for Quantum Devices with Enhanced Isolation and Bandwidth
Deepanshu Trivedi, Leonid Belostotski, Arjuna Madanayake +1
Magneto-optical isolators and circulators have been widely used to safeguard quantum devices from reflections and noise in the readout stage. However, these devices have limited ba…
Low-cost, Low-loss, Ultra-wideband Compact Feed for Interferometric Radio Telescopes
Vincent MacKay, Mark Lai, Peter Shmerko +3
We have developed, built, and tested a new feed design for interferometric radio telescopes with "large-, small-" designs. Those arrays require low-cost and low-complexity fe…
Towards a Low-SWaP 1024-beam Digital Array: A 32-beam Sub-system at 5.8 GHz
Arjuna Madanayake, Viduneth Ariyarathna, Suresh Madishetty +8
Millimeter wave communications require multibeam beamforming in order to utilize wireless channels that suffer from obstructions, path loss, and multi-path effects. Digital multibe…
Design Equations for a Closely-Spaced Two-Element Interferometer Including Internal Noise Coupling
Adrian T. Sutinjo, Benjamin McKinley, Leonid Belostotski +2
We present design equations for a two-element closely-spaced interferometer for measuring the noise temperature of a uniform sky. Such an interferometer is useful for observing hig…
The DRAO Synthesis Telescope
T. L. Landecker, L. Belostotski, J. C. Brown +11
The DRAO Synthesis Telescope (ST) is a forefront telescope for imaging large-scale neutral hydrogen and polarized radio continuum emission at arcminute resolution. Equipped for obs…
Multi-beam 4 GHz Microwave Apertures Using Current-Mode DFT Approximation on 65 nm CMOS
V. Ariyarathna, S. Kulasekera, A. Madanayake +4
A current-mode CMOS design is proposed for realizing receive mode multi-beams in the analog domain using a novel DFT approximation. High-bandwidth CMOS RF transistors are employed…