Systems and Methods for Minimizing Electromagnetic Interface
Systems and methods for minimizing electromagnetic interference are provided. A representative electronic device includes a frequency generator that generates clock signals and a computing device that selects at least one generator frequency that minimizes or eliminates electromagnetic interference based on one or more radio bands of interest. The computing device is designed to send instructions associated with synthesizing the at least one generator frequency. The electronic device further includes a frequency synthesizer that receives the generated clock signals and instructions from the frequency generator and the computing device, respectively. The frequency synthesizer synthesizes the at least one generator frequency based on the received clock signal.
1 . An electronic device that minimizes electromagnetic interference comprising:
a frequency generator that generates clock signals;
a computing device that selects at least one generator frequency that minimizes or eliminates electromagnetic interference based on one or more radio bands of interest; the computing device being designed to send instructions associated with synthesizing the at least one generator frequency, and
a frequency synthesizer that receives the generated clock signals and instructions from the frequency generator and the computing device, respectively, and synthesize the at least one generator frequency based on the received clock signal and instructions.
2 . The electronic device as defined in claim 1 , further comprising clock-based devices that use clock signals to operate, the clock-based devices being designed to receive the at least one generator frequency from the frequency synthesizer, the clock-based devices including at least one of the following: a processing device, memory, switching regulator, cellular transceiver, Wi-Fi transceiver, Bluetooth transceiver, a global positioning system (GPS) receiver, frequency modulation (FM) receiver, and amplitude modulation (AM) receiver.
3 . The electronic device as defined in claim 1 , wherein the at least one generator frequency includes arbitrary numbers of simultaneous different center frequencies that minimize or eliminate electromagnetic interference at the one or more radio bands of interest.
4 . The electronic device as defined in claim 1 , wherein the computing device selects the at least one generator frequency using weighting factor for each of the one or more radio bands of interest, based on predetermined priorities related to the one or more radio bands of interest, to provide optimal weighted solution.
5 . The electronic device as defined in claim 1 , wherein the computing device selects the at least one generator frequency based on specifiable upper and lower generator frequencies for respective clock-based devices that use clock signals to operate.
6 . The electronic device as defined in claim 1 , wherein the electronic device includes at least one of the following: a laptop, cell phone, personal digital assistant (PDA), satellite, Bluetooth device, wireless router, global positioning system (GPS) receiver.
7 . The electronic device as defined in claim 6 , wherein the one or more radio bands of interest include frequencies that the electronic device is transmitting and/or receiving.
8 . The electronic device as defined in claim 1 , wherein the frequency generator includes a crystal oscillator and the computing device includes a microprocessor.
9 . The electronic device as defined in claim 1 , wherein the computing device selects the at least one generator frequency by using the following electrical components:
a processing device; and
memory including a frequency selection manager which has the instructions that are executed by the processing device, the instructions including the following logics:
search for the at least one generator frequency between a lowest frequency and a highest frequency associated with the one or more radio bands of interest;
calculate harmonics associated with each searched generator frequency, the harmonics being a fundamental frequency of the generator frequency;
determine whether the calculated harmonics interfere with the one or more radio bands of interest; and
responsive to determining that the calculated harmonics do not interfere with the one or more radio bands of interest, instruct the frequency synthesizer to synthesize the searched generator frequency.
10 . A computing device comprising:
a processing device; and
memory having a frequency selection manager that includes instructions to perform the following logics:
select at least one generator frequency that minimizes or eliminates electromagnetic interference based on one or more radio bands of interest, and
send instructions associated with synthesizing at least one generator frequency.
11 . The computing device as defined in claim 10 , wherein the computing device sends the instructions to a frequency synthesizer that receives clock signals from a frequency generator, the frequency synthesizer being designed to synthesize the at least one generator frequency based on the received clock signal and instructions.
12 . The computing device as defined in claim 10 , wherein the frequency selection manager is designed to select the at least one generator frequency for clock-based devices that use clock signals to operate, the clock-based devices being designed to receive the at least one generator frequency from a frequency synthesizer, the clock-based devices including at least one of the following: a processing device, memory, switching regulator, cellular transceiver, WiFi transceiver, Bluetooth transceiver, a global positioning system (GPS) receiver, frequency modulation (FM) receiver or transmitter, and amplitude modulation (AM) receiver.
13 . The computing device as defined in claim 12 , wherein the one or more radio bands of interest include frequencies that the clock-based devices are operating.
14 . The computing device as defined in claim 10 , wherein the at least one generator frequency includes arbitrary numbers of simultaneous different center frequencies that minimize or eliminate electromagnetic interference at the one or more radio bands of interest.
15 . The computing device as defined in claim 10 , wherein the frequency selection manager selects the at least one generator frequency using weighting factor for each of the one or more radio bands of interest, based on predetermined priorities related to the one or more radio bands of interest, to provide optimal weighted solution.
16 . The computing device as defined in claim 10 , wherein the frequency selection manager selects the at least one generator frequency based on specifiable upper and lower generator frequencies for respective clock-based devices that use clock signals to operate.
17 . The computing device as defined in claim 10 , wherein the frequency selection manager includes the following logics:
search for the at least one generator frequency between a lowest frequency and a highest frequency associated with the one or more radio bands of interest;
calculate harmonics associated with the searched generator frequency;
determine whether the calculated harmonics interfere with the one or more radio bands of interest; and
responsive to determining that the calculated harmonics do not interfere with the one or more radio bands of interest, instruct a frequency synthesizer to synthesize the searched generator frequency.
18 . A method comprising the steps of:
selecting at least one generator frequency that minimizes or eliminates electromagnetic interference based on one or more radio bands of interest, and
sending instructions associated with synthesizing at least one generator frequency.
19 . The method as defined in claim 18 , wherein selecting the at least one generator frequency includes using weighting factor for each of the one or more radio bands of interest, based on predetermined priorities related to the one or more radio bands of interest, to provide optimal weighted solution.
20 . The method as defined in claim 18 , wherein selecting the at least one generator frequency is based on specifiable upper and lower generator frequencies for respective clock-based devices that use clock signals to operate.
21 . The method as defined in claim 18 , further comprising:
searching for the at least one generator frequency between a lowest frequency and a highest frequency associated with the one or more radio bands of interest;
calculating harmonics associated with the searched generator frequency;
determining whether the calculated harmonics interferes with the one or more radio bands of interest; and
responsive to determining that the calculated harmonics do not interferes with the one or more radio bands of interest, instructing a frequency synthesizer to synthesize the searched generator frequency.