Radio Systems 2

Lecturer:

Tutor:

Supervisor:

Department of Radioelectronics

Synopsis:

This subject thematically links to the subject „Radio systems 1“. It deals with blocks and circuits of the radiocommunication system (RCS) generally and also with RCS in aircraft traffic. Besides the circuit function explanation of basic RCS blocks the subject deals with antenna principles, radio wave propagation, aircraft radio devices technology and radiocommunication in aircraft traffic.

Requirements:

Syllabus of lectures:

1. Radiocomm. system (RCS). Demands on RCS with regard to aircraft radio traffic

2. Transmitter part of RCS. Transmitters block schemes. Transm. par., freq. bands

3. Anal. modul. signal transm. AM, FM. Oper. of AM., FM transm. in aircraft traffic

4. Discrete modulated signal transmitters. Differences of analogue transmitters

5. Receiver part of RCS. Receiv. classif. (direc. amplified, superreg., supeheterod.)

6. Receiver par. - def. Meas. standards of transmitters and receivers. Noise param.

7. RCS basic circuits. Amplifiers (lf, rf, broadband, low noise amp. , power amp., )

8. Harm. and non-harm. signal gen. Crystal osc. Local osc. Transmitter drivers

9. AM, FM modulators. Pulse modulators. Disrete modulated signal modulator

10. Additive, multiplicative mixers. AM, FM , pulse demodulators

11. Transceivers. Special circuits in aircraft transmitter and receiver devices

12. Wave propagation, ionosphere. Terrestrial and aircraft antennas for air traffic

13. Aircraft radio devices technology. Test and diagnostic equipment

14. SW and UHF communication char. for aircraft traffic. Aircraft RCS service

Syllabus of tutorials:

1. RCS block energetic level calculation. Pwr., pwr. amplif., attenuation, sensitivity

2. Detailed transmitter parameters analysis - applied for aircraft traffic

3. Transmitter par. meas. Modulation char., power, parasitic components, distortion

4. Transceiver function demonstration. Noise meas., squelch, frequency stability

5. Superheterodyne padding elements calculation. Superhet blocks power amplif.

6. Ampl. noise figure calculation., cascaded amp. noise figure, noise temperature

7. Class A, B, C, D amplifier measurement

8. Mixer conversion admittance (y21c) measurement

9. Sensitivity, selectivity, AVC measurement. Superhet parasitic signals radiation

10. PLL frequency demodulator measurement. Synchrodetector measurement

11. Electromagnetic field strength calculation in aircraft communication

12. Antenna gain calculation, radiation diagram, imped. match. at basic aircraft ant.

13. Aircraft radio devices demonstration (technology, function of the blocks)

14. Time reserve, test, credits

Study Objective:

Study materials:

[1] Peebles, P.Z.: Communication System Principles. Adison-Wesley Publishing Company, 1976

[2] Proakis, J.G., Manolakis, D.G.: Introduction to Digital Signal Processing. Macmillan Publishing Company, 1989

[3] Rohde, L.U., Whitaker, J.R.: Communication Receivers. McGraw-Hill, 1997

Note:

Further information:

No time-table has been prepared for this course

The course is a part of the following study plans:

• Aerial Information and Control Systems - Magister Studies (compulsory course)
• Aerial Information and Control Systems - Magister Studies (compulsory course)