Receiver

A receiver comprising:

• an antenna to make a received signal out of a transmitted signal;
• a local oscillator to generate a reference local oscillation signal and an orthogonal local oscillation signal phase-shifted by 90° from the reference local oscillation signal;
• an I/Q mixer including an I mixer and a Q mixer wherein the I mixer mixes the received signal with the reference local oscillation signal from the local oscillator and the Q mixer mixes the received signal with the orthogonal local oscillation signal from the local oscillator;
• a noise detector to carry out peak and differential detections of output signals from the I/Q mixer to detect impulse noises in a form of a pulse signal from the received signal;
• a first interpolator carrying out shaping of waveforms of the output signals from the I/Q mixer in response to the pulse signal;
• a demodulator connected to the first interpolator;
• and
• a second interpolator which carries out shaping of waveforms of the output signals from the demodulator in response to the pulse signal from the noise detector.

A receiver comprising:

• an antenna to make a received signal out of a transmitted signal;
• a local oscillator to generate a reference local oscillation signal and an orthogonal local oscillation signal phase-shifted by 90° from the reference local oscillation signal;
• an I/Q mixer including an I mixer and a Q mixer wherein the I mixer mixes the received signal with the reference local oscillation signal from the local oscillator and the Q mixer mixes the received signal with the orthogonal local oscillation signal from the local oscillator;
• an analog-to-digital converter to convert output signals from the I/Q mixer into digital signals;
• an I/Q differential detector which detects differences between the digital signals from the analog-to-digital converter to generate a synchronous signal synchronizing with noises in the digital signals;
• a distortion detector which carries out an arithmetic operation of the digital signal from the analog-to-digital converter in response to the synchronous signal from the I/Q differential detector to detect a distorted degree of the digital signals from the analog-to-digital converter;
• and
• a processor which carries out an arithmetic operation of the digital signals from the analog-to-digital converter and the distorted degree thereof detected by the distortion detector to shape the digital signals.

A receiver system comprising AM and FM receivers:

• the AM receiver including;
• an antenna to make first and second received signals out of transmitted signals,
• a first local oscillator to generate a first reference local oscillation signal and a first orthogonal local oscillation signal phase-shifted by 90° from the first reference local oscillation signal,
• a first I/Q mixer having a first I mixer and a first Q mixer wherein the first I mixer mixes the first received signal with the first reference local oscillation signal from the first local oscillator and the first Q mixer mixes the first received signal with the first orthogonal local oscillation signal from the first local oscillator,
• a first noise detector to carry out peak and differential detections of output signals from the first I/Q mixer to detect impulse noises in a form of a first pulse signal from the first received signal, and
• a first interpolator carrying out shaping of waveforms of the output signals from the first I/Q mixer in response to the first pulse signal from the first noise detector;
• and
• the FM receiver including;
• a second local oscillator to generate a second reference local oscillation signal and a second orthogonal local oscillation signal phase-shifted by 90° from the second reference local oscillation signal,
• a second I/Q mixer having a second I mixer and a second Q mixer wherein the second I mixer mixes the second received signal with the second reference local oscillation signal from the second local oscillator and the second Q mixer mixes the first received signal with the second orthogonal local oscillation signal from the second local oscillator,
• a second noise detector to carry out peak and differential detections of output signals from the second I/Q mixer to detect impulse noises in a form of a second pulse signal from the second received signal, and
• a second interpolator carrying out shaping of waveforms of the output signals from the second I/Q mixer in response to the second pulse signal from the second noise detector.

A receiver system comprising AM and FM receivers:

• the AM receiver including,
• an antenna to make first and second received signals out of transmitted signals,
• a first local oscillator to generate a first reference local oscillation signal and a first orthogonal local oscillation signal phase-shifted by 90° from the first reference local oscillation signal,
• a first I/Q mixer having a first I mixer and a first Q mixer wherein the first I mixer mixes the first received signal with the first reference local oscillation signal from the first local oscillator and the first Q mixer mixes the first received signal with the first orthogonal local oscillation signal from the first local oscillator,
• a first noise detector to carry out peak and differential detections of output signals from the first I/Q mixer to detect impulse noises in a form of a first pulse signal from the first received signal,
• a first interpolator carrying out shaping of waveforms of the output signals from the first I/Q mixer in response to the first pulse signal from the first noise detector,
• an AM detector to demodulate the output signal from the first interpolator, and
• a second interpolator carrying out shaping of waveforms of the output signals from the AM detector in response to the first pulse signal from the first noise detector;
• and
• the FM receiver including,
• a second local oscillator to generate a second reference local oscillation signal and a second orthogonal local oscillation signal phase-shifted by 90° from the second reference local oscillation signal,
• a second I/Q mixer having a second I mixer and a second Q mixer wherein the second I mixer mixes the second received signal with the second reference local oscillation signal from the second local oscillator and the second Q mixer mixes the first received signal with the second orthogonal local oscillation signal from the second local oscillator,
• a second noise detector to carry out peak and differential detections of output signals from the second I/Q mixer to detect impulse noises in a form of a second pulse signal from the second received signal,
• a third interpolator carrying out shaping of waveforms of the output signals from the second I/Q mixer in response to the second pulse signal from the second noise detector,
• an FM detector to demodulate the output signal from the first interpolator, and
• a fourth interpolator carrying out shaping of waveforms of the output signals from the FM detector in response to the second pulse signal from the second noise detector.

A receiver comprising:

• an antenna to make a received signal out of a transmitted signal;
• a local oscillator to generate a reference local oscillation signal and an orthogonal local oscillation signal phase-shifted by 90° from the reference local oscillation signal;
• an I/Q mixer including an I mixer and a Q mixer wherein the I mixer mixes the received signal with the reference local oscillation signal from the local oscillator and the Q mixer mixes the received signal with the orthogonal local oscillation signal from the local oscillator;
• an analog-to-digital converter to convert output signals from the I/Q mixer into digital signals;
• an I/Q differential detector which detects differences between the digital signals from the analog-to-digital converter to generate a synchronous signal synchronizing with noises in the digital signals;
• a distortion detector which carries out an arithmetic operation by a constant modulus algorithm of the digital signal from the analog-to-digital converter in response to the synchronous signal from the I/Q differential detector to detect a distorted degree of the digital signals from the analog-to-digital converter;
• and
• a processor which carries out an arithmetic operation of the digital signals from the analog-to-digital converter and the distorted degree thereof detected by the distortion detector to shape the digital signals.