Matrix for use with a radio transceiver and methods thereto

A method for use with a mobile electronic device comprising a radio transceiver having at least two signal sources, the method comprising:

• defining test frequencies for the at least two signal sources;
• generating a matrix by
• generating a spectrum of predicted harmonics for each of the at least two signal sources;
• limiting a number of harmonics in each spectrum based on properties of the at least two signal sources and the radio transceiver;
• generating the matrix using all possible combinations of the limited number of harmonics of the at least two signal sources;
• and,
• for each combination;
• determining a predicted amplitude of the combination;
• removing all combinations which have a predicted amplitude below a predetermined threshold and/or outside a defined frequency range;
• saving the matrix,
• identifying predicted frequencies for combinations in the matrix with the largest amplitudes;
• generating and transmitting, by the radio transceiver, simultaneous test signals at the defined test frequencies with the radio transceiver;
• receiving and acquiring, by a receiver in the mobile electronic device, a spectrum of frequencies generated from the test signals;
• analyzing the spectrum of frequencies generated from the test signals and identifying the frequencies of observed spurs in the spectrum of frequencies generated from the test signals;
• comparing the frequencies of the observed spurs with the predicted frequencies;
• accepting the matrix for use with the radio transceiver if the correlation is satisfactory;
• modifying the predetermined threshold and generating a new matrix if the correlation is not satisfactory;
• and
• transmitting, by the radio transceiver, over an operating frequency, wherein the operating frequency is selected using the accepted matrix or new matrix.