Multiphase mixer

A multiphase mixer, comprising:

• a transconductance amplifier that converts a voltage signal to a current signal;
• N (where N is a natural number of two or more) first integration elements connected in parallel to a subsequent stage of the transconductance amplifier;
• and
• 2N mixers connected in parallel in pairs to the respective N first integration elements, wherein two mixers connected to an identical integration element of any of the N first integration elements are controlled by driving signals comprising pulse trains having an identical frequency and phases differing by 180°,
• wherein the 2N mixers are controlled by driving signals comprising pulse trains having an identical frequency and phases differing by)180/N(°);
• and
• wherein, of the 2N mixers, N mixers controlled by driving signals comprising pulse trains whose on-periods are adjacent are connected to an identical second integration element.

A multiphase mixer, comprising:

• a transconductance amplifier that converts a voltage signal to a current signal;
• N (where N is a natural number of two or more) first integration elements connected in parallel to a subsequent stage of the transconductance amplifier;
• and
• 2N mixers connected in parallel in pairs to the respective N first integration elements, wherein two mixers connected to an identical integration element of any of the N first integration elements are controlled by driving signals comprising pulse trains having an identical frequency and phases differing by 180°,
• wherein the 2N mixers are controlled by driving signals comprising pulse trains having an identical frequency and phases differing by 180/N(°);
• and
• wherein, of the 2N mixers, two mixers controlled by driving signals comprising pulse trains whose on-period phase difference is 180° are connected to an identical second integration element.

A multiphase mixer comprising:

• a transconductance amplifier that converts a voltage signal to a current signal;
• a first integration element connected in parallel to a subsequent stage of the transconductance amplifier;
• and
• M (where M is a natural number of two or more) mixers connected in parallel with respect to the first integration element, and controlled by driving signals comprising pulse trains having an identical frequency and phases differing by L° (where L is a positive value less than 180), wherein:
• a value obtained by multiplying L by M is 360;
• and
• of the M mixers, P (where P is a natural number less than M) mixers controlled by driving signals comprising pulse trains whose on-periods are adjacent are connected to an identical second integration element.

A multiphase mixer comprising:

• a transconductance amplifier that converts a voltage signal to a current signal;
• a first integration element connected in parallel to a subsequent stage of the transconductance amplifier;
• and
• M (where M is a natural number of two or more) mixers connected in parallel with respect to the first integration element, and controlled by driving signals comprising pulse trains having an identical frequency and phases differing by L° (where L is a positive value less than 180), wherein:
• a value obtained by multiplying L by M is 360;
• and
• of the M mixers, two mixers controlled by driving signals comprising pulse trains whose on-period phase difference is 180° are connected to an identical second integration element.