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Daniel J. Hoppe
Researcher at California Institute of Technology
Publications - 80
Citations - 1170
Daniel J. Hoppe is an academic researcher from California Institute of Technology. The author has contributed to research in topics: Antenna (radio) & NASA Deep Space Network. The author has an hindex of 16, co-authored 77 publications receiving 1046 citations. Previous affiliations of Daniel J. Hoppe include Jet Propulsion Laboratory.
Papers
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Patent
Pattern-aligned carbon nanotube growth and tunable resonator apparatus
Brian D. Hunt,Flavio Noca,Michael E. Hoenk,Larry Epp,Daniel J. Hoppe,Robert S. Kowalcyk,Daniel S. Choi +6 more
TL;DR: In this article, a tunable nanomechanical oscillator device and system is presented, which is designed such that injecting charge density into the tube (e.g. by applying a capacitively-cuopled voltage bias) changes the resonant frequency of the tube, and where exposing the resonator to an RF bias induces oscillitory movement in the suspended portion of the nanotube, forming a nanoscale resonator, as well as a force sensor.
Journal ArticleDOI
A Deployable High-Gain Antenna Bound for Mars: Developing a new folded-panel reflectarray for the first CubeSat mission to Mars.
TL;DR: In this paper, the authors describe the development of a deployable high gain antenna (HGA) for the proposed Mars Cube One (MarCO) CubeSat mission to Mars.
Patent
Carbon nanotube array rf filter
TL;DR: In this article, a tunable nanomechanical filter system with an array of nanofeatures (18), such as nanotubes, is presented. And a method of producing a nanoscale RF filter (10) structure controllably positioned and oriented with a waveguide (14/16) and integrated electrodes (20) is also provided.
Journal ArticleDOI
A High-Power $Ka$ -Band (31–36 GHz) Solid-State Amplifier Based on Low-Loss Corporate Waveguide Combining
TL;DR: In this paper, a low-loss waveguide combining and a packaged monolithic microwave integrated circuit with a low loss microstrip-to-waveguide launcher is developed into a high power -band (31-36 GHz) amplifier producing 50 W at 33 GHz (Ka-band) using 32 low-power (>2 W) solid-state amplifier modules.
Proceedings ArticleDOI
Novel deployable reflectarray antennas for CubeSat communications
TL;DR: In this article, two novel high gain deployable reflectarray antennas to support CubeSat telecommunications are described and compared with other high gain CubeSat antenna technologies, and measured performance results are presented.