| US 7,538,621 B2 | ||
| Broadband integrated tuner | ||
| Vince Birleson, West Tawakoni, Tex. (US); Albert Taddiken, Farmersville, Tex. (US); and Ken Clayton, Plano, Tex. (US) | ||
| Assigned to Microtune (Texas), L.P., Plano, Tex. (US) | ||
| Filed on Jul. 14, 2006, as Appl. No. 11/486,706. | ||
| Application 11/486706 is a continuation of application No. 09/572393, filed on May 16, 2000, granted, now 7,079,195. | ||
| Application 09/572393 is a continuation of application No. 08/904908, filed on Aug. 01, 1997, granted, now 6,177,964. | ||
| Prior Publication US 2006/0256242 A1, Nov. 16, 2006 | ||
| This patent is subject to a terminal disclaimer. | ||
| Int. Cl. H04N 5/44 (2006.01); H04L 7/00 (2006.01); H04L 1/173 (2006.01); H04B 7/00 (2006.01); H04B 1/06 (2006.01); H04N 5/50 (2006.01) | ||
| U.S. Cl. 331—16 [331/117; 331/2; 348/725; 348/731; 348/735; 725/127; 725/131; 725/139; 455/260; 455/264; 455/315] | 27 Claims |
| 1. A receiver comprising:
two or more dual conversion tuners, wherein each of said tuners comprises:
a first mixer having a first input for receiving signals comprising a plurality of channels and a second input in communication
with a first local oscillator signal, wherein said first mixer outputs a first intermediate signal;
a first intermediate filter in communication with said first mixer wherein said first intermediate filter provides coarse
signal selection by removing a first group of selected channels from said first intermediate signal;
a second mixer having a first input in communication with said first intermediate filter and a second input in communication
with a second local oscillator signal; and
a second intermediate filter coupled to said second mixer, wherein said second intermediate filter provides fine signal selection
by removing a second group of selected channels from said second intermediate signal, and wherein said first and second local
oscillator signals are provided by a plurality of phase locked loops (PLLs); and
a single RF input driving said tuners.
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