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We present a tightly-coupled array antenna with integrated phase shifters with continuous coverage of K- and Ka-bands (18–40GHz). Micro-electro mechanical phase shifters were integrated with each antenna element to reduce power consumption, insertions-loss, size, cost and complexity of the beam-forming network. A 4×4 proof-of-concept array is designed, fabricated and measured at broadside. The major...
High-data-rate, beam-agile, low-profile, compact, and low-power transceiver systems are required to address the air-to-air and satellite communications (SATCOM) connectivity requirements of unmanned assets in the battlefield. To this end, the Ka-band offers a key advantage for smaller size and lower profile antennas over the traditional X- and Ku-band antennas and phased arrays. More importantly,...
The effect of space radiation on the reliability of microelectromechanical systems (MEMS) devices is an important consideration for future upper atmosphere and space applications. MEMS capacitors with insulator materials of silicon nitride , silicon oxide , and ultrananocrystalline diamond (UNCD) were selected for radiation and leakage current studies...
We present the design and development of an amplitude compensated long time delay circuit (LTD) in multilayer liquid crystal polymer (LCP) films. The design is implemented with MEMS switches. An LTD is built on a thin-film multilayer stack to provide a variety of transmission lines to offer different attenuation characteristics for amplitude compensation. True time delay (TTD) components produce 0...
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