Simplified High Frequency Tuner

Bluetooth® • ZigBee™ • Cellular Telephones • Wireless LAN • Cable Modems • Police & Fire Radio • AM/FM/XM Consumer Radio

The Simplified High Frequency Tuner technology uses an efficient low-IF architecture that can move your company's wireless products higher up the price/performance curve.

Whether you're in the business end of things or doing design work, you know how much component costs can hurt your company's bottom line, especially in the cost-sensitive consumer products market.

  • Reduce PLL costs with a Doubled PLL Step Size that works by making selective use of upper and lower low-IF frequency ranges;

  • Relax component tolerances with Adaptive Image Avoidance to "dance around" strong interference and thus make the most of limited image rejection;

  • Use less-expensive silicon to fabricate your analog circuitry by taking advantage of a Low-IF Frequency Arrangement that offers efficient image rejection, 1/f noise immunity, and immunity from half-IF and self-mixing spurs;

  • Maintain image rejection while relaxing your tolerances for I,Q channel matching by digitally correcting with an efficient Variable-Phase Hilbert Transform;

  • Make compact and high-performance delta-sigma A/D conversion practical at IF by using efficient Single-Stage One-Bit Decimation Filtering.

Patents

The Simplified High Frequency Tuner is covered by the following patents:

U.S. Patent 6,631,256

U.S. Patent 6,427,068

U.S. Patent 5,937,341

U.S. Patent 7,116,963

U.S. Patent 7,606,542

U.S. Patent 7,606,549

U.S. Patent 7,639,996

U.S. Patent 7,860,482

U.S. Patent 7,953,225

U.S. Patent 7,953,239

U.S. Patent 7,925,238

Additional patents are pending.

Licenses for specific fields of use have been granted to a number of companies, including:

Broadcom Corp.
Cisco Systems, Inc.
CSR plc
Ericsson AB
GN Netcom A/S
Harman International Industries
Infineon Technologies AG
Marvell Semiconductor, Inc.
Silicon Laboratories Inc.
SiTel Semiconductor BV
Toshiba Corporation
VTech Communications, Inc.

Contact
John Reagh, J.D.
Manager of Business Development and Legal Affairs
Direct line: 206-336-5537