Telecommunications – Receiver or analog modulated signal frequency converter – With particular receiver circuit
Patent
1997-12-09
2000-10-17
Tsang, Fan
Telecommunications
Receiver or analog modulated signal frequency converter
With particular receiver circuit
455254, 4552321, 455337, H04B 116
Patent
active
061344303
ABSTRACT:
A programmable dynamic range receiver which provides the requisite level of performance at reduced power consumption. The .SIGMA..DELTA. ADC within the receiver is designed with one or more loops. Each loop provides a predetermined dynamic range performance. The loops can be enabled or disabled based on the required dynamic range and a set of dynamic range thresholds. The .SIGMA..DELTA. ADC is also designed with adjustable bias current. The dynamic range of the .SIGMA..DELTA. ADC varies approximately proportional to the bias current. By adjusting the bias current, the required dynamic range can be provided by the .SIGMA..DELTA. ADC with minimal power consumption. A reference voltage of the .SIGMA..DELTA. ADC can be descreased when high dynamic range is not required, thereby allowing for less bias current in the .SIGMA..DELTA. ADC and supporting circuitry. The dynamic range of the .SIGMA..DELTA. ADC is a also function of the oversampling ratio which is proportional to the sampling frequency. High dynamic range requires a high oversampling ratio. When high dynamic range is not required, the sampling frequency can be lowered.
REFERENCES:
patent: 5341135 (1994-08-01), Pearce
Bazarjani Seyfollah S.
Ciccarelli Steven C.
Younis Saed G.
Edwards Christopher O.
Hom Raymond B.
Sobutka Philip J.
Tsang Fan
Wadsworth Philip R.
LandOfFree
Programmable dynamic range receiver with adjustable dynamic rang does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Programmable dynamic range receiver with adjustable dynamic rang, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Programmable dynamic range receiver with adjustable dynamic rang will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-477854