Patent ID: 7502595

Claim:
A radio equipment generating a signal of a first frequency band by frequency-converting using a signal of a third frequency band, and generating a signal of a second frequency band by frequency-converting using a signal of a fourth frequency band, thereby enabling transmitting which ever signals of the first frequency band and the second frequency band to other radio equipment, said radio equipment comprising: a first output section outputting a signal of a predetermined frequency belonging to a band lying between the third frequency band and the fourth frequency band; a second output section outputting a signal of a predetermined frequency; and a generation and output section generating and outputting, using the signals from the first output section and the second output section, a signal having a frequency equal to the frequency sum of the signals from the first and second output sections, or a signal having a frequency equal to the frequency difference between the signals from the first and the second output sections, respectively as the signal of the third frequency band and the signal of the fourth frequency band.