Integrated direct conversion satellite tuner

US7139547B2 · kind B2 · utility

Assignee

• Broadcom Corporation · US

Inventors

• Myles Wakayama · Laguna Niguel, US
• Dana Vincent Laub · Irvine, US
• Frank Carr · Tustin, US
• Afshin Mellati · Aliso Viejo, US
• David Ho · Singapore, SG
• Hsiang-Bin Lee · Irvine, US
• Chun-Ying Chen · Irvine, US
• James Y. C. Chang · Irvine, US
• Lawrence M. Burns · Santa Rosa, US
• Young Joon Shin · Irvine, US
• Patrick Pai · Honolulu, US
• Iconomos A. Koullias · Reading, US
• Ron Lipka · Sinking Spring, US
• Luke Steigerwald · Westford, US
• Alexandre Kral · Laguna Niguel, US

Key dates

• Filing date: Nov 29, 2001
• Grant date: Nov 21, 2006
• Expiry date: Apr 14, 2023

Classification

• Technology area (CPC H): Electricity
• CPC primary: H03D2200/0047
• WIPO field: Basic communication processes
• WIPO sector: Electrical engineering

Abstract

A direct conversion satellite tuner is fully integrated on a common substrate. The integrated tuner receives an RF signal having a plurality of channels and down-converts a selected channel directly to baseband for further processing. The integrated tuner includes on-chip local oscillator generation, tunable baseband filters, and DC Offset cancellation. The integrated tuner can be implemented in a completely differential I/Q configuration for improved electrical performance. The entire direct conversion satellite tuner can be fabricated on a single semiconductor substrate using standard CMOS processing, with minimal off-chip components. The tuner configuration described herein is not limited to processing TV signals, and can be utilized to down-convert other RF signals to an IF frequency or baseband.