Author

Simon Tartakovsky

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Preprint Sep 2026

Kilopixel Performance of the Kinetic Inductance Detectors for the Terahertz Intensity Mapper

We characterize a flight-grade array of lumped-element kinetic inductance detectors (LEKIDs) developed for the long-wavelength module of the Terahertz Intensity Mapper (TIM). From an 864-pixel science array, we select 490 well-isolated resonators spanning the focal plane and readout band and measure their thermal respo...

J. Bracks, R. Janssen, S. Hailey-Dunsheath et al. · 0 citations

Preprint Aug 2026

Inverting and Up-channelizing Critically-Sampled Polyphase Filter Banks

Polyphase filter banks (PFBs) are widely used to channelize digitized time-domain data in real time. However, applications such as radio astronomy often require higher spectral resolution than real-time systems can provide. We introduce a circulant inverse-PFB formalism and present a new, scalable, fast Fourier transfo...

S. Fay, M. Agrawal, H. Chiang et al. · 0 citations