Boots – shoes – and leggings
Patent
1976-06-18
1978-07-18
Claffy, Kathleen H.
Boots, shoes, and leggings
364724, 364726, H04J 114
Patent
active
041017382
ABSTRACT:
A circuit for converting into an FDM format spatially separated signalling signals and pilot signals, comprises a digital filter bank for converting the signals into the FDM format. A receiver for separating the signalling signals and pilot signals from the FDM signal comprises another digital filter bank for producing baseband signals. These filter banks have a transfer characteristic formed by a number of passband curves which are derived from the characteristic of a selected low-pass filter.
REFERENCES:
patent: 3605019 (1971-09-01), Cutter
patent: 3808412 (1974-04-01), Smith
patent: 3891803 (1975-06-01), Daguet
patent: 3971922 (1976-07-01), Bellanger
Bellanger Maurice Georges
Bonnerot Georges
Coudreuse Michel
Claffy Kathleen H.
Popek Joseph A.
Steckler Henry I.
Telecommunications Radioelectriques et Telephoniques T.R.T.
Trifari Frank R.
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