Patent ID: 7983640

Claim:
A receiver circuit for receiving an analog signal comprising: a mixer device which mixes said analog signal with a local-oscillator frequency and outputs a mixer current signal; a first integrator device coupled to said mixer device generating a first intermediate signal by integrating said mixer current signal summed with a first feedback current signal; a second integrator device following said first integrator device and generating a quantizer input signal by integrating said first intermediate signal summed with a second feedback current signal; a quantizer device generating a digital output signal by quantizing said quantizer input signal, wherein said quantizer device receives said quantizer input signal directly from said second integrator, said quantizer input signal being the only input signal to the quantizer device; a first feedback digital/analog converter which converts said digital output signal into said first feedback current signal; and a second feedback digital/analog converter converting said digital output signal into said second feedback current signal, wherein said first and second integrator devices are constructed of an operational amplifier and a feedback capacitor; wherein at least one local resonator loop is formed and at least two serially interconnected integrator devices are provided with feedback via a resistor.