Wireless user terminal and system having signal clipping...

Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail

Reexamination Certificate

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Details

C455S561000, C455S309000, C327S321000, C327S309000

Reexamination Certificate

active

06882861

ABSTRACT:
A wireless user terminal (42) and system (40) implementing a mixed signal CODEC (100) including an improved sigma-delta ADC (18) which limits input signals into a switched capacitor configuration and avoids adding circuit overhead in the signal path is disclosed herein. This sigma-delta analog-to-digital converter (18), having an input signal and an output signal, includes a switch (sw1), a clipping circuit (20), and a known sigma-delta ADC (34). It solves the clipping signal problem by limiting the signal right at the input of the sigma-delta ADC (34). The clipping circuit (20) couples to the switch (sw1) and the sigma-delta ADC (34) for switching the voltage applied to the sigma-delta ADC between the input signal (vin) and at least one threshold voltage (Vnand Vp).

REFERENCES:
patent: 4877981 (1989-10-01), Gomes
patent: 5661422 (1997-08-01), Crook et al.
patent: 5689204 (1997-11-01), Song
patent: 6084467 (2000-07-01), Muza
patent: 6229470 (2001-05-01), Sadkowski et al.
patent: 6424280 (2002-07-01), Sadkowski
patent: 6476745 (2002-11-01), Evans et al.
patent: WO 8204508 (1982-12-01), None
patent: WO 9608878 (1996-03-01), None
patent: WO 9610868 (1996-04-01), None

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