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Method and System for Integration of Bluetooth and FM Local Oscillator Generation into a Single Unit Using a DDFS

a technology of local oscillator and integration method, which is applied in the field of multi-standard systems, can solve the problems of fm transceivers, large processing overhead, and expensive integration of multiple audio communication technologies into a single devi

Inactive Publication Date: 2008-09-25
BROADCOM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

"The patent describes a way to combine Bluetooth and FM local oscillator generation in a single device using a digital frequency synthesizer. The technical effect of this invention is the improved performance and reliability of the Bluetooth and FM functions in the device."

Problems solved by technology

However, integrating multiple audio communication technologies into a single device may be costly.
Moreover, coordinating the reception and / or transmission of data to and / or from the portable electronic device or a wireless device that uses FM transceivers may require significant processing overhead that may impose certain operation restrictions and / or design challenges.
Furthermore, simultaneous use of a plurality of radios in a handheld may result in significant increases in power consumption.

Method used

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  • Method and System for Integration of Bluetooth and FM Local Oscillator Generation into a Single Unit Using a DDFS
  • Method and System for Integration of Bluetooth and FM Local Oscillator Generation into a Single Unit Using a DDFS
  • Method and System for Integration of Bluetooth and FM Local Oscillator Generation into a Single Unit Using a DDFS

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Embodiment Construction

[0023]Certain embodiments of the invention may be found in a method and system for integration of Bluetooth and FM local oscillator generation in a single unit using a direct digital frequency synthesizer (DDFS). Aspects of the method and system may comprise generating a clock signal fLO at a particular frequency in a chip that handles communication of Bluetooth signals and FM signals. The generated clock signal fLO may be divided to produce a frequency divided clock signal fDIV, which may be mixed with the generated clock signal fLO to enable transmission and / or reception of Bluetooth signals. The generated clock signal fLO or the frequency divided clock signal fDIV may be selected for clocking one or more direct digital frequency synthesizers (DDFSs) to enable transmission and / or reception of the FM signals.

[0024]FIG. 1A is a block diagram of an exemplary FM transmitter that communicates with handheld devices that utilize a single chip with integrated Bluetooth and FM radios, in a...

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PUM

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Abstract

Certain aspects of a method and system for integration of Bluetooth and FM local oscillator generation in a single unit using a direct digital frequency synthesizer (DDFS) may be disclosed. Aspects of the method may include generating a clock signal at a particular frequency in a chip that handles communication of Bluetooth signals and FM signals. The generated clock signal may be divided to produce a frequency divided clock signal, which may be mixed with the generated clock signal to enable transmission and / or reception of Bluetooth signals. The generated clock signal or the frequency divided clock signal may be selected for clocking one or more direct digital frequency synthesizers (DDFSs) to enable transmission and / or reception of the FM signals.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS / INCORPORATION BY REFERENCE[0001]This application makes reference to, claims priority to, and claims benefit of U.S. Provisional Application Ser. No. 60 / 895,698 (Attorney Docket No. 18372US01) filed Mar. 19, 2007.[0002]This application also makes reference to:U.S. patent application Ser. No. ______ (Attorney Docket Number 18372US02) filed on even date herewith;U.S. patent application Ser. No. ______ (Attorney Docket Number 18575US02) filed on even date herewith;U.S. patent application Ser. No. ______ (Attorney Docket Number 18576US02) filed on even date herewith;U.S. patent application Ser. No. ______ (Attorney Docket Number 18577US02) filed on even date herewith;U.S. patent application Ser. No. ______ (Attorney Docket Number 18578US02) filed on even date herewith;U.S. patent application Ser. No. ______ (Attorney Docket Number 18579US02) filed on even date herewith;U.S. patent application Ser. No. ______ (Attorney Docket Number 18580US02) filed...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): H04B7/26H04B5/48
CPCH03F3/211H03F3/245H03F3/72H03F2200/129H03G3/3078H03F2200/294H03F2200/451H03F2203/7236H03G3/3068H03F2200/156
Inventor ROFOUGARAN, AHMADREZAROFOUGARAN, MARYAM
Owner BROADCOM CORP