Lectures:
Introduction: Modulated Signals and the Bandpass Signaling, the classification and the content of the course. Coherence of the theme to the courses Signals and Systems I and Signals and Systems II.
Mathematical representation of the bandpass waveforms. Basic definitions. Complex envelope representation. Representation of modulated signals.
Bandpass signal filtering.
Fourier transform of a bandpass signal. Equivalent baseband filters. Distortionless transmission.
Transfer characteristics of a distortionless bandpass channel. The group delay and the phase delay.
Bandpass dimensionality theorem.
The sampling theorem for the bandpass waveform. Bandpass dimensionality theorem for nonuniformly spaced time samples of the waveform.
Standard modulations.
Spectrum of bandpass signals.
PSD of standard bandpass signals.
Evaluation of power.
Components of of bandpass systems 1.
Filters.
Components of of bandpass systems 2.
Amplifiers.
Limiters.
Components of of bandpass systems 3.
Mixers.
Detectors.
Envelope detector.
Product detector.
Frequency modulation detector.
IQ detektor.
Components of of bandpass systems 4.
Phase locked loops.
An analog PLL and a linear model of the analog PLL.
AM signal detection using a PLL.
Transmitters and receivers.
Transmitter.
Receiver.
The Superheterodyne Receiver.
Amplitude Modulation.
AM signals.
Power of an AM signals.
AM signals and the noise.
The AM efficiency.
DSB-SC signals.
SSB signals.
Angle modulation 1
FM signals and PM signals.
Representation of angle-modulated signals.
Representation of FM and PM signals.
Angle modulator circuits.
Angle modulation 2.
FM and PM signal with sinusoidal modulation.
Spectra of angle modulated signals.
Narrowband angle modulation NBFM.
Computer labs:
The introductory laboratory lecture. The project of the laboratory communication system. The assignment of the laboratory tasks.
Bandpass signals
Matematical representation of a bandpass signal. The model verification by the measurement of signal parameters.
Bandpass signal filtering. Equivalent baseband filters. Measurement of the filtered signal parameters. Distortionless transmission. Amplifiers. Measurement of an amplifier fequency response. Measurement of group delay and the phase delay of a bandpass signal.
The sampling theorem.
The sampling theorem for the bandpass waveform. Measurement and simulation.
Amplitude modulation.
AM Signals. Representation of AM signals. AM signal analysis in the time domain and in the frequency domain. Spectra of AM signals. Power of AM signals. The percentage of modulation. The AM efficiency. DSB-SC signals. SSB signals. Measurement of parameters of AM signals and DSB-CS signals.
Angle modulation.
FM signals and PM signals.
Representation of angle-modulated signals.
Representation of FM and PM signals. FM and PM signals analysis in the time domain and the frequency domain. Spectra of angle modulated signals. Power of FM and PM signals. FM and PM signal with sinusoidal modulation. Narrowband angle modulation . Wideband frequency modulation. Measurement of parameters of NBFM and WBFM signals.
TEST No.1
Components of of bandpass systems 1
Filtrs. Construction types. Elements of filters. Filter application. Optimization criterion. Design and measurement of selected parameters. Measurement of transfer characteristics for the equivalent low-pass filter.
Components of of bandpass systems 2
Amplifiers. Limiters. Design and measurement of selected parameters.
Components of of bandpass systems 3
Mixers. Detectors. Measurement of selected parameters.
Envelope detector. Product detector. IQ detektor. Design and measurement of selected parameters.
Components of of bandpass systems 4
Phase locked loops. AM signal detection using a PLL.Design and measurement of selected parameters.
Transmitters and receivers. The AM broadcast superheterodyne receiver.
TEST No.2.
Student has to elaborate two laboratory works, that consist of both theoretical and practical part. Each laboratory work is divided into three two-hour units. Student is bounded to compile the written report on both of his laboratory works. The presumed extent of the report is about eight pages. The written report on the first laboratory work is a precondition for the successive student´s second laboratory work.
Laboratory works
1 Measurement of AM signal parameters.
Mathematical representation of AM signal. Spectra of AM signal. Power of AM signals. The percentage of modulation. The AM efficiency. Measurement of parameters of AM signals.
2 Measurement of FM and PM signal parameters.
Mathematical representation of FM and PM signals. Spectra of angle modulated signals. Power of FM and PM signals. FM and PM signal with sinusoidal modulation. Narrowband angle modulation. Measurement of parameters of NBFM signals.
Introduction: Modulated Signals and the Bandpass Signaling, the classification and the content of the course. Coherence of the theme to the courses Signals and Systems I and Signals and Systems II.
Mathematical representation of the bandpass waveforms. Basic definitions. Complex envelope representation. Representation of modulated signals.
Bandpass signal filtering.
Fourier transform of a bandpass signal. Equivalent baseband filters. Distortionless transmission.
Transfer characteristics of a distortionless bandpass channel. The group delay and the phase delay.
Bandpass dimensionality theorem.
The sampling theorem for the bandpass waveform. Bandpass dimensionality theorem for nonuniformly spaced time samples of the waveform.
Standard modulations.
Spectrum of bandpass signals.
PSD of standard bandpass signals.
Evaluation of power.
Components of of bandpass systems 1.
Filters.
Components of of bandpass systems 2.
Amplifiers.
Limiters.
Components of of bandpass systems 3.
Mixers.
Detectors.
Envelope detector.
Product detector.
Frequency modulation detector.
IQ detektor.
Components of of bandpass systems 4.
Phase locked loops.
An analog PLL and a linear model of the analog PLL.
AM signal detection using a PLL.
Transmitters and receivers.
Transmitter.
Receiver.
The Superheterodyne Receiver.
Amplitude Modulation.
AM signals.
Power of an AM signals.
AM signals and the noise.
The AM efficiency.
DSB-SC signals.
SSB signals.
Angle modulation 1
FM signals and PM signals.
Representation of angle-modulated signals.
Representation of FM and PM signals.
Angle modulator circuits.
Angle modulation 2.
FM and PM signal with sinusoidal modulation.
Spectra of angle modulated signals.
Narrowband angle modulation NBFM.
Computer labs:
The introductory laboratory lecture. The project of the laboratory communication system. The assignment of the laboratory tasks.
Bandpass signals
Matematical representation of a bandpass signal. The model verification by the measurement of signal parameters.
Bandpass signal filtering. Equivalent baseband filters. Measurement of the filtered signal parameters. Distortionless transmission. Amplifiers. Measurement of an amplifier fequency response. Measurement of group delay and the phase delay of a bandpass signal.
The sampling theorem.
The sampling theorem for the bandpass waveform. Measurement and simulation.
Amplitude modulation.
AM Signals. Representation of AM signals. AM signal analysis in the time domain and in the frequency domain. Spectra of AM signals. Power of AM signals. The percentage of modulation. The AM efficiency. DSB-SC signals. SSB signals. Measurement of parameters of AM signals and DSB-CS signals.
Angle modulation.
FM signals and PM signals.
Representation of angle-modulated signals.
Representation of FM and PM signals. FM and PM signals analysis in the time domain and the frequency domain. Spectra of angle modulated signals. Power of FM and PM signals. FM and PM signal with sinusoidal modulation. Narrowband angle modulation . Wideband frequency modulation. Measurement of parameters of NBFM and WBFM signals.
TEST No.1
Components of of bandpass systems 1
Filtrs. Construction types. Elements of filters. Filter application. Optimization criterion. Design and measurement of selected parameters. Measurement of transfer characteristics for the equivalent low-pass filter.
Components of of bandpass systems 2
Amplifiers. Limiters. Design and measurement of selected parameters.
Components of of bandpass systems 3
Mixers. Detectors. Measurement of selected parameters.
Envelope detector. Product detector. IQ detektor. Design and measurement of selected parameters.
Components of of bandpass systems 4
Phase locked loops. AM signal detection using a PLL.Design and measurement of selected parameters.
Transmitters and receivers. The AM broadcast superheterodyne receiver.
TEST No.2.
Student has to elaborate two laboratory works, that consist of both theoretical and practical part. Each laboratory work is divided into three two-hour units. Student is bounded to compile the written report on both of his laboratory works. The presumed extent of the report is about eight pages. The written report on the first laboratory work is a precondition for the successive student´s second laboratory work.
Laboratory works
1 Measurement of AM signal parameters.
Mathematical representation of AM signal. Spectra of AM signal. Power of AM signals. The percentage of modulation. The AM efficiency. Measurement of parameters of AM signals.
2 Measurement of FM and PM signal parameters.
Mathematical representation of FM and PM signals. Spectra of angle modulated signals. Power of FM and PM signals. FM and PM signal with sinusoidal modulation. Narrowband angle modulation. Measurement of parameters of NBFM signals.