NASA Tech Briefs’ Electronics & Computers Web page spotlights design innovations in electronic components, semiconductors and integrated circuits (ICs), board-level electronics, power electronics, and computer hardware, as published in NASA Tech Briefs magazine. Many of the Tech Briefs below are correlated to a Technical Support Package (TSP) or White Paper that can be downloaded free of charge.
Multi-Modulator for Bandwidth-Efficient Communication
Coding and modulation can be selected by loading configuration bits into an FPGA.
A modulator circuit board has recently
been developed to be used in conjunction
with a vector modulator to generate
any of a large number of modulations
for bandwidth-efficient radio transmission
of digital data signals at ...
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Microwave Power Combiners for Signals of Arbitrary Amplitude
Output polarization would no
longer vary with input
amplitudes.
Schemes for combining power from
coherent microwave sources of arbitrary
(unequal or equal) amplitude have been
proposed. Most prior microwave-power-combining
schemes are limited to
sources of equal amplitude.
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Airborne Antenna System for Minimum-Cycle-Slip GPS Reception
The antenna is kept pointing upward as the airplane banks.
A system that includes a Global
Positioning System (GPS) antenna and
associated apparatus for keeping the
antenna aimed upward has been developed
for use aboard a remote-sensing-survey
airplane. The purpose served by
the system is to enable minimum-cycle-slip
...
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