Invention Grant
- Patent Title: Direct digital conversion tuner
- Patent Title (中): 直接数字转换调谐器
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Application No.: US13111056Application Date: 2011-05-19
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Publication No.: US08670740B2Publication Date: 2014-03-11
- Inventor: Leonard Dauphinee
- Applicant: Leonard Dauphinee
- Applicant Address: US CA Irvine
- Assignee: Broadcom Corporation
- Current Assignee: Broadcom Corporation
- Current Assignee Address: US CA Irvine
- Agency: Sterne, Kessler, Goldstein & Fox P.L.L.C.
- Main IPC: H04B1/26
- IPC: H04B1/26 ; H04K3/00

Abstract:
A direct sampling tuner includes a low noise amplifier and an optional dynamically configurable band pass filter coupled to the low noise amplifier. The optional filter is configured to pass a selected band of channels. The tuner further includes a relatively high accuracy, multi-bit analog-to-digital converter (“ADC”) coupled to the LNA or to the optional dynamically configurable band pass filter. The ADC operates at greater than about twice a frequency of a sampled signal. The ADC directly samples the spectrum of the selected channels at the Nyquist rate, thus avoiding image problems presented by conventional tuners.
Public/Granted literature
- US20110280297A1 Direct Digital Conversion Tuner Public/Granted day:2011-11-17
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