Current space-based lidar systems for Earth remote sensing have a number of inherent limitations that impact their use for broader science applications. These include no cross-track coverage, fixed spatial sampling that forces pointing control to be performed by the spacecraft, cloud loss over many types of scenes, and, in general, lifetimes set in part by the number of laser shots fired. The E...

A broad-wall transverse slot array is important in that it radiates linear polarization orthogonal to that of shunt slot array. A bore-sight beam transverse slot array requires the slot spacing of a guided wavelength λg, which is always greater than the free space wavelength λo, hence the array suffers from unwanted grating beam radiations. From the design point of view, it utilizes non-resonan...

In previous works, the authors showed that using robot-assisted steerable electrode array insertions can significantly reduce the insertion forces compared to non-steerable electrode arrays. In addition to steering the electrode array, it is possible to change its angle of approach with respect to the scala tympani. This paper focuses on determining the relevance of changing the angle of approa...

Over the past few years, NASA has funded the development of several prototype radiator designs which use shape memory alloys to actuate cylindrical panels in response to changes in temperature. By adjusting each panel’s view to space, variable geometry radiators aim to improve the variable heat rejection capabilities of future manned vehicles in a consumable free manner. A system level radiator...

In this thesis, two chip designs using the scalable array architecture are introduced. Firstly, we introduce a scalable architecture of coherent harmonic oscillator array for high-power and collimated radiation beam at mid-THz band. The array is 2Dcoupled, and each element achieves these functions: (i) maximize oscillation at fundamental frequency fo= 2 50 GHz; (ii) synchronize phase of fo and ...

This paper describes a new system for panoramic two-way video communication. Digitally combining images from an array of inexpensive video cameras results in a wide-field panoramic camera, from inexpensive off-the-shelf hardware. This system can aid distance learning in several ways, both by presenting a better view of the instructor and teaching materials to the students, and by enabling bette...

Satellite, fifth generation (5G), and sixth (6G) mobile communication systems operating at micro- millimeter wave frequencies are an essential pillar in advanced network architectures for high-throughput low latency services. The decisive factors this current development were the significant technological advances accomplished over last two decades, which meanwhile enable highly integrated, fea...