Method and System for Integration of Bluetooth and FM Local Oscillator Generation into a Single Unit Using a DDFS
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.
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.
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 on even date herewith;
U.S. patent application Ser. No. ______ (Attorney Docket Number 18581US02) filed on even date herewith;
U.S. patent application Ser. No. ______ (Attorney Docket Number 18590US02) filed on even date herewith; and
U.S. patent application Ser. No. ______ (Attorney Docket Number 18591US02) filed on even date herewith.
Each of the above stated applications is hereby incorporated herein by reference in its entirety.
FIELD OF THE INVENTIONCertain embodiments of the invention relate to multi-standard systems. More specifically, certain embodiments of the invention relate to a method and system for integration of Bluetooth and FM local oscillator generation in a single unit using a direct digital frequency synthesizer (DDFS).
BACKGROUND OF THE INVENTIONA direct digital frequency synthesizer (DDFS) is a digitally-controlled signal generator that may vary the output signal frequency over a large range of frequencies, based on a single fixed-frequency precision reference clock. In addition, a DDFS is also phase-tunable. In essence, within the DDFS, discrete amplitude levels are input to a digital-to-analog converter (DAC) at a sampling rate determined by the fixed-frequency reference clock. The output of the DDFS may provide a signal whose shape may depend on the sequence of discrete amplitude levels that are input to the DAC at the constant sampling rate. The DDFS is particularly well suited as a frequency generator that outputs a sine or other periodic waveforms over a large range of frequencies, from almost DC to approximately half the fixed-frequency reference clock frequency.
A DDFS offers a larger range of operating frequencies and requires no feedback loop, thereby providing near instantaneous phase and frequency changes, avoiding overshooting, undershooting and settling time issues associated with other analog systems. A DDFS may provide precise digitally-controlled frequency and/or phase changes without signal discontinuities.
With the popularity of portable electronic devices and wireless devices that support audio applications, there is a growing need to provide a simple and complete solution for audio communications applications. For example, some users may utilize Bluetooth-enabled devices, such as headphones and/or speakers, to allow them to communicate audio data with their wireless handset while freeing to perform other activities. Other users may have portable electronic devices that may enable them to play stored audio content and/or receive audio content via broadcast communication, for example.
However, integrating multiple audio communication technologies into a single device may be costly. Combining a plurality of different communication services into a portable electronic device or a wireless device may require separate processing hardware and/or separate processing software. 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. Power being a precious commodity in most wireless mobile devices, combining devices such as a Bluetooth radio and a FM radio requires careful design and implementation in order to minimize battery usage. Additional overhead such as sophisticated power monitoring and power management techniques are required in order to maximize battery life.
Further limitations and disadvantages of conventional and traditional approaches will become apparent to one of skill in the art, through comparison of such systems with some aspects of the present invention as set forth in the remainder of the present application with reference to the drawings.
BRIEF SUMMARY OF THE INVENTIONA method and/or system for integration of Bluetooth and FM local oscillator generation in a single unit using a direct digital frequency synthesizer (DDFS), substantially as shown in and/or described in connection with at least one of the figures, as set forth more completely in the claims.
These and other advantages, aspects and novel features of the present invention, as well as details of an illustrated embodiment thereof, will be more fully understood from the following description and drawings.
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.
The cellular phone 104a may be enabled to receive an FM transmission signal from the FM transmitter 102. The user of the cellular phone 104a may then listen to the transmission via the listening device 108. The cellular phone 104a may comprise a “one-touch” programming feature that enables pulling up specifically desired broadcasts, like weather, sports, stock quotes, or news, for example. The smart phone 104b may be enabled to receive an FM transmission signal from the FM transmitter 102. The user of the smart phone 104b may then listen to the transmission via the listening device 108.
The computer 104c may be a desktop, laptop, notebook, tablet, and a PDA, for example. The computer 104c may be enabled to receive an FM transmission signal from the FM transmitter 102. The user of the computer 104c may then listen to the transmission via the listening device 108. The computer 104c may comprise software menus that configure listening options and enable quick access to favorite options, for example. In one embodiment of the invention, the computer 104c may utilize an atomic clock FM signal for precise timing applications, such as scientific applications, for example. While a cellular phone, a smart phone, computing devices, and other devices have been shown in
A clock signal fLO may be generated at a particular frequency in the single chip 106 that handles communication of Bluetooth signals and FM signals. The generated clock signal fLO may be utilized for clocking one or more direct digital frequency synthesizers (DDFSs) to enable transmission of the FM signals.
In another example, a computer, such as the computer 104c, may comprise an MP3 player or another digital music format player and may broadcast a signal to the deadband of an FM receiver in a home stereo system. The music on the computer may then be listened to on a standard FM receiver with few, if any, other external FM transmission devices or connections. While a cellular phone, a smart phone, and computing devices have been shown, a single chip that combines a Bluetooth and FM transceiver and/or receiver may be utilized in a plurality of other devices and/or systems that receive and use an FM signal.
A clock signal fLO may be generated at a particular frequency in the single chip 106 that handles communication of Bluetooth signals and FM signals. The generated clock signal fLO may be utilized for clocking one or more direct digital frequency synthesizers (DDFSs) to enable reception of the FM signals.
The integrated processor 120 may comprise suitable logic, circuitry, and/or code that may enable processing of the FM data received by the FM receiver 118. Moreover, the integrated processor 120 may enable processing of FM data to be transmitted by the FM receiver 118 when the FM receiver 118 comprises transmission capabilities. The external device 114 may comprise a baseband processor 122. The baseband processor 122 may comprise suitable logic, circuitry, and/or code that may enable processing of Bluetooth data received by the Bluetooth radio 116. Moreover, the baseband processor 122 may enable processing of Bluetooth data to be transmitted by the Bluetooth radio 116. In this regard, the Bluetooth radio 116 may communicate with the baseband processor 122 via the external device 114. The Bluetooth radio 116 may communicate with the integrated processor 120. The FM transmitter 121 may comprise suitable logic, circuitry, and/or that may enable transmission of FM signals via appropriate broadcast channels, for example.
The FM/Bluetooth coexistence antenna system 152 may comprise suitable hardware, logic, and/or circuitry that may be enabled to provide FM and Bluetooth communication between external devices and a coexistence terminal. The FM/Bluetooth coexistence antenna system 152 may comprise at least one antenna for the transmission and reception of FM and Bluetooth packet traffic.
The FM radio portion 156 may comprise suitable logic, circuitry, and/or code that may be enabled to process FM packets for communication. The FM radio portion 156 may be enabled to transfer and/or receive FM packets and/or information to the FM/Bluetooth coexistence antenna system 152 via a single transmit/receive (Tx/Rx) port. In some instances, the transmit port (Tx) may be implemented separately from the receive port (Rx). The FM radio portion 156 may also be enabled to generate signals that control at least a portion of the operation of the FM/Bluetooth coexistence antenna system 152. Firmware operating in the FM radio portion 156 may be utilized to schedule and/or control FM packet communication, for example.
The FM radio portion 156 may also be enabled to receive and/or transmit priority signals 160. The priority signals 160 may be utilized to schedule and/or control the collaborative operation of the FM radio portion 156 and the Bluetooth radio portion 158. The Bluetooth radio portion 158 may comprise suitable logic, circuitry, and/or code that may be enabled to process Bluetooth protocol packets for communication. The Bluetooth radio portion 158 may be enabled to transfer and/or receive Bluetooth protocol packets and/or information to the FM/Bluetooth coexistence antenna system 152 via a single transmit/receive (Tx/Rx) port. In some instances, the transmit port (Tx) may be implemented separately from the receive port (Rx). The Bluetooth radio portion 158 may also be enabled to generate signals that control at least a portion of the operation of the FM/Bluetooth coexistence antenna system 152. Firmware operating in the Bluetooth radio portion 158 may be utilized to schedule and/or control Bluetooth packet communication. The Bluetooth radio portion 158 may also be enabled to receive and/or transmit priority signals 160. A portion of the operations supported by the FM radio portion 156 and a portion of the operations supported by the Bluetooth radio portion 158 may be performed by common logic, circuitry, and/or code.
In some instances, at least a portion of either the FM radio portion 156 or the Bluetooth radio portion 158 may be disabled and the wireless terminal may operate in a single-communication mode, that is, coexistence may be disabled. When at least a portion of the FM radio portion 156 is disabled, the FM/Bluetooth coexistence antenna system 152 may utilize a default configuration to support Bluetooth communication. When at least a portion of the Bluetooth radio portion 158 is disabled, the FM/Bluetooth coexistence antenna system 152 may utilize a default configuration to support FM communication.
In accordance with an embodiment of the invention, a clock signal fLO may be generated at a particular frequency in the single chip FM/BT radio device 154 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.
The LOGEN 206 may comprise suitable logic, circuitry, and/or code that may be enabled to generate a Bluetooth clock signal fBT comprising an in-phase (I) component fBT
The VCO 212 may comprise suitable logic, circuitry, and/or code that may be enabled to generate a clock signal fLO at a particular frequency that may be N times the frequency of the reference oscillator, Nf0, for example, where f0 is the frequency of the reference oscillator. For example, the VCO 212 may be enabled to generate a 1.6 GHz clock signal.
The loop amplifier 216 may comprise suitable logic, circuitry, and/or code that may be enabled to amplify the generated clock signal fLO received from the VCO 212. The loop amplifier 216 may be enabled to generate an amplified output signal to the plurality of mixers 222 and 224, and the divider 220. The loop amplifier 218 may comprise suitable logic, circuitry, and/or code that may be enabled to amplify a received signal from the loop amplifier 216 and generate an amplified output signal to the fractional synthesizer 214.
The fractional synthesizer 214 may comprise suitable logic, circuitry, and/or code that may be enabled to divide the output of the VCO 212 by N, for example, to match the frequency of a reference oscillator. The fractional synthesizer 214 may be programmable to synthesize a plurality of closely spaced frequencies, which enables it to be utilized in applications such as in commercial wireless applications with multiple channels, for example. In an embodiment, the fractional synthesizer 214 may be enabled to adjust a clock signal fLO generated by the VCO 212 without affecting the Bluetooth clock signals fBT communicated to the Bluetooth transceiver 204.
The divider 220 may comprise suitable logic, circuitry, and/or code that may be enabled to divide a frequency of a received input signal into one or more signals with different frequencies. For example, the divider 220 may be enabled to receive a 1.6 GHz input signal from the loop amplifier 222 and generate two 800 MHz output signals, for example, to the plurality of mixers 222 and 224. The divider 220 may be enabled to generate an output clock signal fDIV by dividing a frequency of the generated clock signal fLO.
The mixer 222 may comprise suitable logic, circuitry, and/or code that may be enabled to mix the received input signals from the loop amplifier 216 and the divider 220 and generate an output signal to the loop amplifier 226. For example, the mixer 222 may be enabled to mix a 1.6 GHz input signal from the loop amplifier 216 and a 800 MHz input signal from the divider 220 and generate a 2.4 GHz output signal to the loop amplifier 226. The loop amplifier 226 may be enabled to amplify the received input signal from the mixer 222 and generate an amplified output signal to one or more of the Bluetooth receiver 208 and the Bluetooth transmitter 210. For example, the loop amplifier 226 may be enabled to generate the Q component fBT
The mixer 224 may comprise suitable logic, circuitry, and/or code that may be enabled to mix the received input signals from the loop amplifier 216 and the divider 220 and generate an output signal to the loop amplifier 228. For example, the mixer 224 may be enabled to mix a 1.6 GHz input signal from the loop amplifier 216 and a 800 MHz input signal from the divider 220 and generate a 2.4 GHz output signal to the loop amplifier 228. The loop amplifier 228 may be enabled to amplify the received input signal from the mixer 224 and generate an amplified output signal to one or more of the Bluetooth receiver 208 and the Bluetooth transmitter 210. For example, the loop amplifier 228 may be enabled to generate the I component fBT
In operation, the fractional synthesizer 214 may be enabled to generate a control signal, which may be utilized by the VCO 212 to generate a clock signal fLO. In an exemplary embodiment of the invention, the frequency of the clock signal, fLO, may be about 1.6 GHz. The fractional synthesizer 214 may utilize the clock signal, fLO to adjust a subsequent control signal communicated to the VCO 212. The clock signal, fLO, may be communicated to a divider 220, which may implement frequency division on the received signal fLO. The divider 220 may generate an output clock signal, fDIV comprising in-phase (I) component frequency division signal, fDIV
The mixer 224 may be enabled to mix the signals, fLO and fDIV
fBT
and
fBT
The signals fBT
In an embodiment of the invention, the clock signal fLO may be communicated to the DDFS 242. The DDFS 242 may comprise suitable logic, circuitry and/or code that may enable reception of the clock signal fLO and generate a sequence of binary numbers. The process of converting the clock signal fLO input signal to a sequence of binary numbers may comprise analog to digital conversion (ADC) whereby each distinct voltage, current and/or power level associated with the received clock signal, fLO may be represented as a binary number selected from a plurality of binary numbers. Conversely, each binary number may correspond to a range of voltage, current and/or power levels in the received clock signal fLO. An exemplary clock signal, fLO may be a sinusoidal signal for which the corresponding period may be equal to the inverse of the frequency, (1/fLO).
The number of binary numbers may be determined by the number of bits, b, in the binary number representation. Each binary number may comprise a least significant bit (LSB) and a most significant bit (MSB). In an exemplary numerical representation, each of binary numbers may have a value within the range 0 to 2b−1. The operation of the DDFS 242 may be such that a period of the received clock signal, fLO may be converted to a binary sequence 0, 1, . . . , 2b−1, wherein upon reaching the value 2b−1 the next number in the binary sequence may be 0 with the sequence continuing. The set of numbers from 0 to 2b−1 may represent a period of the binary sequence. The DDFS 242 may receive a frequency word input signal, fWord, from the processor 240 upon which the value of b may be determined. Consequently, the period of the sequence of binary numbers generated by the DDFS may be programmable based on the fWord input signal.
The DAC 238 may comprise suitable logic, circuitry and/or code that may enable generation of an analog output signal based on a received sequence of input binary numbers. The DAC 238 may be enabled to generate a corresponding analog voltage level for each input binary number. The number of distinct analog voltage levels may be equal to the number of distinct binary numbers in the input sequence.
The filter 238 may comprise suitable logic, circuitry and/or code that may enable low pass filtering (LPF) of signal components contained in a received input signal. The filter 238 may enable smoothing of the received input signal to attenuate amplitudes for undesirable frequency components contained in the received input signal. The filter 238 may generate a signal, fFM, having a frequency in the FM frequency band. In an exemplary embodiment of the invention, the range of frequencies for the signal fFM may be between about 78 MHz and 100 MHz, for example. The signal fFM may be a quadrature signal comprising I and Q signal components, fFM
In an exemplary embodiment of the invention, the FM transmitter 230 and the FM receiver 232 may be coupled to an antenna 244 via a bidirectional coupler 234. The bidirectional coupler 234 may couple the antenna to the FM receiver 232 at a given time instant, such that the FM receiver 232 signal may receive signals via the antenna 244. The bidirectional coupler 234 may couple the antenna to the FM transmitter 230 at a different time instant under the control of a different fWord to the DDFS 242, such that the FM transmitter 230 signal may transmit signals via the antenna 244. In another exemplary embodiment of the invention, the FM transmitter 230 may be coupled to a transmitting antenna 245b, while the FM receiver 232 may be coupled to a receiving antenna 245a.
In operation, the value fWord may be selected to maintain an approximately constant frequency for the signal fFM despite changes that may occur in the signal fLO, which may occur due to frequency hopping in the Bluetooth communication signal.
In operation, the fractional synthesizer 214 may be enabled to generate a control signal, which may be utilized by the VCO 212 to generate a clock signal. In an exemplary embodiment of the invention, the frequency of the clock signal, fLO, may be about 1.6 GHz. The fractional synthesizer 214 may utilize the clock signal, fLO to adjust a subsequent control signal communicated to the VCO 212. The clock signal, fLO, may be communicated to a divider 220, which may implement frequency division on the received signal fLO. The divider 220 may generate an in-phase (I) component frequency division signal, fDIV
The mixer 224 may be enabled to receive the signals, fLO and fDIV
fBT
and
fBT
The signals fBT
In another embodiment of the invention, the signal fDIV
In an embodiment of the invention, fDIV
The clock signal fLO may be generated at a particular frequency, for example, at 1.6 GHz in a chip capable of handling communication of Bluetooth signals and FM signals. The divider 220 may be enabled to divide the generated clock signal fLO 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 multiplexer 221 may be enabled to select the generated clock signal fLO or the frequency divided clock signal fDIV for clocking one or more direct digital frequency synthesizers (DDFSs) 242 to enable transmission and/or reception of the FM signals based on a select signal received from the processor 240. The generated clock signal fLO or the frequency divided clock signal fDIV may be enabled to clock at least one of the DDFSs 242 to enable the transmission and/or reception of the FM signals.
In accordance with an embodiment of the invention, a method and system for integration of Bluetooth and FM local oscillator generation in a single unit using a DDFS may include 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 by a multiplexer 221 for clocking one or more direct digital frequency synthesizers (DDFSs) 242 to enable transmission and/or reception of the FM signals. The generated clock signal fLO or the frequency divided clock signal fDIV may be enabled to clock at least one of the DDFSs 242 to enable the transmission and/or reception of the FM signals.
A Bluetooth clock signal fBT maybe generated by mixing the generated clock signal fLO with the produced frequency divided clock signal fDIV. The generated Bluetooth clock signal fBT may comprise an in phase (I) component fBT
Another embodiment of the invention may provide a machine-readable storage, having stored thereon, a computer program having at least one code section executable by a machine, thereby causing the machine to perform the steps as described above for integration of Bluetooth and FM local oscillator generation in a single unit using a DDFS.
Accordingly, the present invention may be realized in hardware, software, or a combination of hardware and software. The present invention may be realized in a centralized fashion in at least one computer system, or in a distributed fashion where different elements are spread across several interconnected computer systems. Any kind of computer system or other apparatus adapted for carrying out the methods described herein is suited. A typical combination of hardware and software may be a general-purpose computer system with a computer program that, when being loaded and executed, controls the computer system such that it carries out the methods described herein.
The present invention may also be embedded in a computer program product, which comprises all the features enabling the implementation of the methods described herein, and which when loaded in a computer system is able to carry out these methods. Computer program in the present context means any expression, in any language, code or notation, of a set of instructions intended to cause a system having an information processing capability to perform a particular function either directly or after either or both of the following: a) conversion to another language, code or notation; b) reproduction in a different material form.
While the present invention has been described with reference to certain embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the scope of the present invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the present invention without departing from its scope. Therefore, it is intended that the present invention not be limited to the particular embodiment disclosed, but that the present invention will include all embodiments falling within the scope of the appended claims.
Claims
1. A method for communicating signals, the method comprising:
- in a chip that handles communication of Bluetooth signals and FM signals:
- generating a clock signal at a particular frequency;
- dividing said generated clock signal to produce a frequency divided clock signal, which is mixed with said generated clock signal to enable transmission of said Bluetooth signals or reception of said Bluetooth signals; and
- selecting said generated clock signal or said frequency divided clock signal for clocking one or more direct digital frequency synthesizers (DDFSs) to enable transmission of said FM signals or reception of said FM signals.
2. The method according claim 1, comprising clocking via said generated clock signal or said frequency divided clock signal, at least one of said DDFSs to enable said transmission of said FM signals or said reception of said FM signals.
3. The method according to claim 1, comprising generating a Bluetooth clock signal by mixing said generated clock signal with said produced frequency divided clock signal.
4. The method according claim 3, wherein said generated Bluetooth clock signal comprises an in phase (I) component and a quadrature phase (Q) component.
5. The method according claim 3, wherein said generated Bluetooth clock signal enables said transmission of said Bluetooth signals or said reception of said Bluetooth signals.
6. The method according to claim 1, comprising generating a FM clock signal to enable said transmission of said FM signals or said reception of said FM signals via said one or more DDFSs.
7. The method according claim 6, wherein said generated FM clock signal comprises an in phase (I) component and a quadrature phase (Q) component.
8. The method according to claim 1, comprising generating said clock signal at said particular frequency utilizing one or more of: a voltage controlled oscillator (VCO) and a fractional synthesizer.
9. The method according to claim 1, comprising controlling said transmission of said FM signals or said reception of said FM signals via a bidirectional coupler.
10. The method according to claim 1, comprising modifying a frequency of said selected said generated clock signal or said frequency divided clock signal based on a received control word.
11. The method according to claim 10, comprising adjusting said received control word to compensate for changes in said generated clock signal.
12. A system for communicating signals, the system comprising:
- one or more circuits in a chip that handles communication of Bluetooth signals and FM signals, wherein said one or more circuits enable generation of a clock signal at a particular frequency;
- said one or more circuits enable division of said generated clock signal to produce a frequency divided clock signal, which is mixed with said generated clock signal to enable transmission of said Bluetooth signals or reception of said Bluetooth signals; and
- said one or more circuits enable selection of said generated clock signal or said frequency divided clock signal for clocking one or more direct digital frequency synthesizers (DDFSs) to enable transmission of said FM signals or reception of said FM signals.
13. The system according claim 12, wherein said one or more circuits enable clocking via said generated clock signal or said frequency divided clock signal, at least one of said DDFSs to enable said transmission of said FM signals or said reception of said FM signals.
14. The system according claim 12, wherein said one or more circuits enable generation of a Bluetooth clock signal by mixing said generated clock signal with said produced frequency divided clock signal.
15. The system according claim 14, wherein said generated Bluetooth clock signal comprises an in phase (I) component and a quadrature phase (Q) component.
16. The system according claim 14, wherein said generated Bluetooth clock signal enables said transmission of said Bluetooth signals or said reception of said Bluetooth signals.
17. The system according to claim 12, wherein said one or more circuits enable generation of a FM clock signal to enable said transmission of said FM signals or said reception of said FM signals via said one or more DDFSs.
18. The system according claim 17, wherein said generated FM clock signal comprises an in phase (I) component and a quadrature phase (Q) component.
19. The system according to claim 12, wherein said one or more circuits enable generation of said clock signal at said particular frequency utilizing one or more of: a voltage controlled oscillator (VCO) and a fractional synthesizer.
20. The system according to claim 12, wherein said one or more circuits enable controlling of said transmission of said FM signals or said reception of said FM signals via a bidirectional coupler.
21. The system according to claim 12, wherein said one or more circuits enable modification of a frequency of said selected said generated clock signal or said frequency divided clock signal based on a received control word.
22. The system according to claim 21, wherein said one or more circuits enable adjusting of said received control word to compensate for changes in said generated clock signal.
Type: Application
Filed: May 29, 2007
Publication Date: Sep 25, 2008
Inventors: Ahmadreza Rofougaran (Newport Coast, CA), Maryam Rofougaran (Rancho Palos Verdes, CA)
Application Number: 11/754,460
International Classification: H04B 7/26 (20060101);