摘要:
According to an embodiment, a frequency converting device is provided with a duty adjusting unit that generates a 1/N local signal, which is a local signal with a duty ratio of 1/N, when N is an integral number not smaller than 3 and an N-th high-frequency component included in the local signal is a target of inhibition. Further, this is provided with a mixer that outputs difference or sum between/of the 1/N local signal and an input signal.
摘要:
According to an embodiment, a frequency converting device is provided with a duty adjusting unit that generates a 1/N local signal, which is a local signal with a duty ratio of 1/N, when N is an integral number not smaller than 3 and an N-th high-frequency component included in the local signal is a target of inhibition. Further, this is provided with a mixer that outputs difference or sum between/of the 1/N local signal and an input signal.
摘要:
A semiconductor integrated circuit includes a first input terminal configured to input a baseband signal, a second input terminal configured to input a local oscillation signal, an output terminal configured to output a modulating signal, a first amplifier circuit configured to receive the baseband signal through the first input terminal and to output a first amplified signal of the baseband signal, a 2-multiplying circuit configured to receive the local oscillation signal through the second input terminal and to output a 2-multiplied signal of the local oscillation signal, an adder configured to add the 2-multiplied signal and the first amplified signal and to output an addition signal, a second amplifier circuit configured to receive the addition signal and to output a second amplified signal of the addition signal, and a mixer configured to multiply the second amplified signal and the local oscillation signal and to output the modulating signal to the output terminal.
摘要:
A semiconductor integrated circuit includes a first input terminal configured to input a baseband signal, a second input terminal configured to input a local oscillation signal, an output terminal configured to output a modulating signal, a first amplifier circuit configured to receive the baseband signal through the first input terminal and to output a first amplified signal of the baseband signal, a 2-multiplying circuit configured to receive the local oscillation signal through the second input terminal and to output a 2-multiplied signal of the local oscillation signal, an adder configured to add the 2-multiplied signal and the first amplified signal and to output an addition signal, a second amplifier circuit configured to receive the addition signal and to output a second amplified signal of the addition signal, and a mixer configured to multiply the second amplified signal and the local oscillation signal and to output the modulating signal to the output terminal.