Lesson 10-RF Oscillators

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Lesson 10-RF Oscillators

Main References•[1]* * D M. Pozar, 'Microwave engineering’, 2nd Edition, 1998 John-Wiley & Sons.•|2] J. Millman. c. c. Halkias, "Integrated electronic

Lesson 10-RF Oscillatorscs’. 1972, McGraw-Hill.•[3] R. Ludwig, p. Bretchko. ’RF circuit design - theory and applications’. 2000 Prentice-Hail.•[4] B. Razavi. "RF microelectro

nics'. 1998 Prentice-Hall. TK6560.•(5] J R Smith.’Modem communication circuits’.1998 McGraw-Hill.•[GJ P H. Young. ’Electronics communication technique Lesson 10-RF Oscillators

s', 5in edition. 2004 Prentice-Hall.•|7] Gilmore R , Besser L..’Practical RF circuit design for modem wireless systems’, Vol. 1 & 2, 2003, Artech Hous

Lesson 10-RF Oscillators

e•[8] Ogata K.. 'Modem control engineering". 4Kl edition, 2005, Prentice-Hall.ApiỉHỈ:1Agenda•Positive feedback oscillator concepts.•Negative resistanc

Main References•[1]* * D M. Pozar, 'Microwave engineering’, 2nd Edition, 1998 John-Wiley & Sons.•|2] J. Millman. c. c. Halkias, "Integrated electronic

Lesson 10-RF Oscillatorstor start-up requirement and transient•Oscillator design - Making an amplifier circuit unstable•Constant irj circle•Fixed frequency oscillator design.

•Voltage-controlled oscillator design.1.0 Oscillation ConceptsArỉ»»2Introduction•Oscillators are a class of circuits with 1 terminal or port, which pr Lesson 10-RF Oscillators

oduce a periodic electrical output upon power up.•Most of us would have encountered oscillator circuits while studying for our basic electronics class

Lesson 10-RF Oscillators

es.•Oscillators can be classified into two types: (A) Relaxation and (B) Harmonic oscillators.•Relaxation oscillators (also called astable multivibrat

Main References•[1]* * D M. Pozar, 'Microwave engineering’, 2nd Edition, 1998 John-Wiley & Sons.•|2] J. Millman. c. c. Halkias, "Integrated electronic

Lesson 10-RF OscillatorsHarmonic oscillators are capable of producing near sinusoidal output, and is based on positive feedback approach.•Here we will focus on Harmonic Oscil

lators for RF systems. Harmonic oscillators are used as this class of circuits are capable of producing stable sinusoidal waveform with low phase nois Lesson 10-RF Oscillators

Main References•[1]* * D M. Pozar, 'Microwave engineering’, 2nd Edition, 1998 John-Wiley & Sons.•|2] J. Millman. c. c. Halkias, "Integrated electronic