Aliasing communication system with multi-mode and multi-band functionality and embodiments thereof, such as the family radio service

A system for communicating, comprising:

• a controller that operates under the direction of a user, and that issues a first command signal and a second command signal;
• a controller signal generator to generate a control signal according to said first command signal;
• and
• a down-converting and filtering (UDF) module to filter and down-convert one or more input signals based on said control signal and according to said second command signal, said UDF to alias said filtered input signal according to an aliasing signal, said aliasing signal having an aliasing frequency, said aliasing frequency being a function of a clock signal, and thereby output a channel filtered and down-converted signal.

A method of communicating, comprising the steps of:

• (1) identifying one or more radio frequency bands from the electromagnetic spectrum as bands of interest;
• (2) identifying one or more channels within each of said bands of interest as channel/band combinations;
• (3) identifying one of said channel/band combinations as a monitored channel/band combination;
• (4) causing an input filter to operate with said monitored channel/band combination, and filtering an input signal using said input filter, to create a filtered signal having a frequency within said monitored channel/band combination;
• (5) aliasing said filtered signal according to an aliasing signal, said aliasing signal having an aliasing frequency, said aliasing frequency being a function of a clock signal, thereby generating a down-converted baseband signal;
• and
• (6) causing an output filter to operate with said monitored channel/band combination, and filtering said down-converted baseband signal using said output filter, thereby generating a down-converted baseband signal.

A system for communicating, comprising:

• an input filter module comprised of one or more input filters to filter one or more input signals so as to generate one or more filtered input signals;
• a universal frequency translator to down-convert at least one of said one or more filtered input signals to generate a down-converted baseboard signal, said universal frequency translator comprising means for aliasing said filtered input signal according to an aliasing signal, said aliasing signal having an aliasing frequency, said aliasing frequency being a function of a clock signal, thereby generating said down-converted baseband signal;
• and
• an output filter module comprised of one or more output filters to filter said down-converted baseband signal.