A/D converters

Details A/D converters A/D converters

1986-02-13

1988-02-16

Griffin, Robert L.

Pulse or digital communications

Spread spectrum

Direct sequence

375103, 333172, 328127, H04B 110

Patent

active

047260424

ABSTRACT:
An analogue-to-digital converter arrangement including a signal de-emphasis network 10.sub.I, 10.sub.Q which attenuates higher frequency analogue signals relative to lower frequency analogue signals, an A/D converter 11.sub.I, 11.sub.Q to which the de-emphasised signals are applied, and a pre-emphasis network 12.sub.I, 12.sub.Q substantially complementary to the de-emphasis network to which the digitised signals are applied.

REFERENCES:
patent: 3444469 (1969-05-01), Miyagi
patent: 3588531 (1971-06-01), Bjor
patent: 3649922 (1972-03-01), Ralph et al.
patent: 4414536 (1983-11-01), Sumi
patent: 4447909 (1984-05-01), Hjorring
patent: 4470147 (1984-09-01), Goatcher
patent: 4493091 (1985-01-01), Gundry

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