RF/Microwave Transistor Amplifier Design
INSTRUCTOR: Les Besser
FORMAT: 6 CD-ROMs (double-length CD's, 2 hours each)
Includes a 286-page manual and bonus book Microwave Transistor Amplifiers by Guillermo Gonzales.
PUBLISHED: 2003 (original 1986)
UPC: 890900000336
This course is a comprehensive treatment of amplifier design techniques, including computer-aided simulation and synthesis. The course emphasizes CAD applications and contains numerous real life design examples that illustrate the principles discussed.
Course Contents
- Session I: Fundamentals of Active Circuits
- Two-port parameters
- Transmission line principles
- Smith Chart
- Session II: CAD Concepts: Impedance Matching
- Microwave circuit analysis
- Matching network synthesis
- Optimization
- Statistical analysis
- Session III: Gain Expressions, Stability and DC Biasing
- Session IV: Unilateral and Bilateral Design
- Session V: Broadband Amplifier Design and Noise Figure Principles
- Unilateral
- Bilateral
- Constant-gain circles
- Graphical design techniques
- Physically realizable topologies
- Unconditionally stable topologies
- Session VI: Low-Noise and Feedback Amplifiers
Session I: Fundamentals of Active Circuits
The first session begins with an introduction to two-port parameters, followed by the development of the Smith Chart. Impedance transformation with lossless lumped and distributed elements are examined, leading to impedance matching of one-ports. Transistor equivalent circuits and scattering parameters are viewed as functions of frequency and characteristic impedance. Network order definition concludes the session.
Session II: CAD Concepts: Impedance Matching
The key functions of microwave CAD circuit analysis, synthesis, optimization and tolerance analysis are discussed with their limitations and and practical considerations. An illustrative one-port matching network design example is shown in detail, including circuit modeling, topology selection, matching synthesis, optimization, effects of component losses and tolerances.
Session III: Gain Expressions; Stability; DC Biasing
Comparison of Transducer, Operating and Available Power Gain expressions is given for two-port amplifier design. Unilateral gain formulas are developed by eliminating transistor input/output interaction. Stability circles and the "k-factor" are related to s-parameters and the Smith Chart. Single and multi-stage stability are examined in the generalized case, for all passive source and load terminations. DC biasing of bipolar and FET devices are shown with both passive and active circuitry.
Session IV: Unilateral and Bilateral Design
Unilateral and bilateral designs are performed through the development of constant gain circles. The basic transducer gain of an active device, S21, is changed to the desired value by transforming the source and load to the appropriate set of gain circles. Transducer Gain approach is used in the unilateral case, while the Operating and Available Power Gain methods are utilized for the bilateral design.
Session V: Broadband Amplifier Design; Noise Figure Principles
A case study of a 200-400MHz small signal amplifier design is used to illustrate device selection, stabilization, impedance modeling, matching network synthesis, simultaneous optimization for flat gain and low input/output VSWR. Yield analysis is performed by Monte Carlo technique. Noisy two-ports are examined; generalized expressions are shown to find the noise performance of an amplifier with arbitrary source termination.
Session VI: Low Noise and Feedback Amplifiers
A two-stage, 8-10GHz low-noise amplifier design is shown, using both the Available and Operating Power Gain technique. Optimized electrical transmission line parameters are converted to physical dimensions, then submitted for automated circuit layout and further manipulated to the final physical form.
Feedback amplifiers are examined and illustrated through the design of two 10-1500MHz circuits. In the second case, transistor s-parameters are generated by a microwave SPICE program which is later used to evaluate temperature and saturation effects. Noise performance is analyzed with series and shunt feedback.
The CD-ROM can be started from any PC that has Windows 98 (or higher). Note: Windows Media Player 7.1 or higher is needed to run this course.
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