Boots – shoes – and leggings
Patent
1992-08-17
1994-12-20
Voeltz, Emanuel T.
Boots, shoes, and leggings
364721, 307106, 340952, 327107, G06F 102
Patent
active
053750659
ABSTRACT:
A waveform generator suitable for use in the testing of instrument landing systems comprising: a first generator (1) for generating digitally a first waveform comprising the superposition of a second waveform (19) of a first frequency and a third waveform (21) of a second frequency; a second generator (3) for generating digitally a fourth waveform comprising the superposition of a fifth waveform (25 or 27) comprising a phase reversed version of one (19 or 21) of said second (19) and third (21) waveforms of the frequency of said one waveform (19 or 21) and a sixth waveform (23 or 29) in phase with and of the frequency of the other one (19 or 21) of said second (19) and third (21) waveforms; and a circuit (7) for combining said first and fourth waveforms thereby to produce a waveform suitable for said use.
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Choi Kyle J.
Marconi Instruments Limited
Voeltz Emanuel T.
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