Switched capacitor n-path filter

In an N-path filter, a commutating switched capacitor integrator circuit comprising:

• an active element having a first input terminal and an output terminal;
• a first plurality of N capacitors each having the same value of capacitance;
• first switch means selectively-sequentially connecting, at a commutating rate, individual ones of said first plurality of capacitors as integrating capacitors between said active elements' first input and output terminals only during associated pairs of adjacent time slots for storing charge;
• and
• connecting means for selectively-sequentially connection at least one of:
• (1) individual ones of a second plurality of N-capacitors each having the same values of capacitance, at the commutating rate, between said first input terminal and a second input terminal only during associated pairs of adjacent time slots for selectively storing charge for an input voltage on said second input terminal;
• and (2) individual ones of a third plurality of capacitors of the same value of capacitance during associated pairs of adjacent time slots in a manner so as to alternately connect, at the commutating rate and during first and second time slots of each pair thereof, one and other sides of an individual one of said third plurality of capacitors to said first input terminal and a ground reference potential, respectively, and to ground and a third input terminal, respectively for alternately transferring charge between associated ones of said first and third pluralities of capacitors and storing charge on the associated one of said third plurality of capacitors for an input voltage on said third input terminal, respectively.