1 to 10 of 236 Results
Dec 17, 2021
Khanal, S.; van Berkel , S.L.; Rahiminejad, S.; Jung-Kubiak, C.; Maestrini, A.; Chattopadhyay, G., 2021, "Demonstration of a 1-D Submillimeter-Wave Phased Array with MEMS Phase Shifters", https://hdl.handle.net/2014/55207, International Microwave and RF Conference 2021, Lucknow, India, December 17-19, 2021, JPL Open Repository
At submillimeter-wave frequencies, due to the nonavailability of low-loss phase shifters, electronic antenna beam scanning is difficult to realize. Traditionally, power-hungry and bulky motors are used to mechanically scan the antenna beam. At lower-frequencies, phased array ante... |
Dec 4, 2021
van Berkel, S.; Khanal, Subash; Rahiminejad, Sofia; Jung-Kubiak, Cecile; Maestrini, Alain; Chattopadhyay, Goutam, 2021, "A 1-D Submm-wave Leaky-Wave Phased Array using MEMS Phase Shifters", https://hdl.handle.net/2014/54917, 2021 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, Marina Bay Sands, Singapore, December 4-10, 2021, JPL Open Repository
Beam-scanning of submillimeter-wave spectrometers and radiometers have traditionally been implemented using mechanical scanning mechanisms due to the absence of lowloss electronic phase shifters. Recently developed waveguideintegrated MEMS phase shifters are paving the way to rea... |
Dec 4, 2021
Feyissa, Brook; Arumugam, Darmindra D; Bush, Jack D; Peng, Nicholas S, 2021, "Isolation in Compact Magnetically-loaded Tri-axial Magneto-quasistatic Detectors", https://hdl.handle.net/2014/55080, 2021 IEEE AP-S Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, Marina Bay Sands, Singapore, December 4-10, 2021, JPL Open Repository
A navigation technique using quasistatic magnetic field had been an active R\&{}D topic for a while. One parameter to measure the performance of such technique is to quantify the error between calculated and actual position across a range. Several factors could contribute to the... |
Nov 15, 2021
Howe, A S; Nayar, Hari; Erwin, Andrew; Wang, Gary; Wilcox, Brian, 2021, "ATHLETE Offloader Limb as a High-capacity Crane", https://hdl.handle.net/2014/55928, AIAA ASCEND 2021 (Virtual/In-Person Hybrid), Las Vegas, Nevada, November 15-17, 2021, JPL Open Repository
A new concept for the NASA Jet Propulsion Laboratory (JPL) All-Terrain Hex-Limbed Extra-Terrestrial Explorer (ATHLETE) robotic constructor / mobility system employs tendon-driven actuation of individual limbs, similar to high-capacity cranes in terrestrial work environments, that... |
Nov 15, 2021
Kim-Castet, So Young; Roffo, Kenneth; Laubach, Sharon; Tan-Wang, Grace; Reeves, Glenn; Pyrzak, Guy; Ye, Sean, 2021, "Mission Concept Design for Autonomous Space Missions using Mission-Level Modeling and Simulation", https://hdl.handle.net/2014/55989, AIAA ASCEND 2021 (Virtual/In-Person Hybrid), Las Vegas, Nevada, November 15-17, 2021, JPL Open Repository
NASA’s Europa Lander mission is to search for biosignatures on Europa based on in-situ science using a lander architecture. This mission presents a set of challenges that requires a high level of autonomy on the lander system, leading to the need for a new operational paradigm th... |
Nov 15, 2021
Lee, Carlyn B; Lee, Charles; Shaikh, Mohsin; Michels, Dominik, 2021, "Lunar Terrain Coverage Analysis Data Delivery Workflow", https://hdl.handle.net/2014/55977, AIAA ASCEND 2021 (Virtual/In-Person Hybrid), Las Vegas, Nevada, November 15-17, 2021, JPL Open Repository
In this work, we are developing a lunar terrain database to enable fast rendering of sun illumination and earth visibility for a proposed coverage analysis tool. This development will advance lunar mission design and formulation for current and future communications architectures... |
Nov 15, 2021
Mysore Nagaraja, Srinivas Prasad; Monje, Raquel Rodriguez; Cofield, Rick; Focardi, Paolo, 2021, "Design of 94/238 GHz Dual-Frequency Feed Horn for Atmospheric Radar Applications", https://hdl.handle.net/2014/55941, VIRTUAL 2021 IEEE CAMA, Antibes Juan-les-Pins, France, November 15-17, 2021, JPL Open Repository
A compact dual frequency feed horn is designed and optimized to operate at W-band (94.92 GHz) and G-band (238 GHz). The feed horn consists of a single spline profile horn, a diplexer having W- and G-band ports and a band pass filter at the W-band port. The filter provides isolati... |
Nov 15, 2021
McGarey, Patrick, 2021, "Fit to be Tied: Embracing Tethered Robots for Exploring Extreme Planetary Environments", https://hdl.handle.net/2014/55957, AIAA ASCEND 2021 (Virtual/In-Person Hybrid), Las Vegas, Nevada, November 15-17, 2021, JPL Open Repository
Tethers are supportive wires that could provide power, communication, and even science instrument capabilities to planetary rovers, landers, and future human settlements. Whether it be power distribution and optical communication connecting robots exploring extreme, undersea and... |
Nov 15, 2021
Howe, A. Scott; Nayar, Hari; Erwin, Andrew; Wang, Gary; Wilcox, Brian H., 2021, "ATHLETE Offloader Limb as a High-capacity Crane", https://hdl.handle.net/2014/56098, AIAA ASCEND 2021, Las Vegas, Nevada, November 15-17, 2021, JPL Open Repository
A new concept for the NASA Jet Propulsion Laboratory (JPL) All-Terrain Hex-Limbed Extra-Terrestrial Explorer (ATHLETE) robotic constructor / mobility system employs tendon-driven actuation of individual limbs, similar to high-capacity cranes in terrestrial work environments. Whil... |
Nov 15, 2021
Yun, Kyongsik; Verma, Rishi; Rebbapragada, Umaa, 2021, "Time series comparisons in Deep Space Network", https://hdl.handle.net/2014/55980, AIAA ASCEND 2021 (Virtual/In-Person Hybrid), Las Vegas, Nevada, November 15-17, 2021, JPL Open Repository
The Deep Space Network (DSN) is NASA’s international array of antennas that support interplanetary spacecraft missions. DSN provides radar and radio astronomy observations that enhance our understanding of the solar system and the larger universe. A track is a block of continuous... |
