Workshop Program

Design bases of the microwave low-noise amplifiers using silicon transistors are presented. A number of design issues including circuit configuration, transistor biasing or grounding, how to determine circuit element values are discussed first. Then the circuit simulation approach is demonstrated, addressing active and passive element modeling as well as noise analysis. A layout of the circuit using CAD software and a fabrication technique of soldering surface-mount type chips on printed circuit boards are introduced. Furthermore, microwave measurements of low-noise amplifiers will be shown.

Keyword ： Microwave Low-Noise Amplifiers, Transistor, Printed Circuit Board

It is presented how to design microwave filters and embody them. First, filters are classified according to geometries, RF characteristics, etc. Next, it is discussed how to design resonators and coupling elements. Finally, filters and multiplexers designed for the satellite and terrestrial broadcasting equipment will be shown.

Keyword ： Microwave Filters, Attenuation Poles, Multi-Modes, Multiplexers

In this lecture, advanced planar antennas integrated with microwave circuits are presented. The structure and principle of microwave dividers and combiners such as a 90-degree hybrid and magic-T are briefly explained. Design and applications of advanced planar antennas having a polarization control, beam steering, or DOA estimation function are also discussed.

Keyword ： Microwave Divider and Combiner, Planar Antenna, Polarization Control，Beam Steering

Fundamentals of frequency conversion and modulation/demodulation indispensable for wireless communication signal processing are presented. Using complex signaling, we can easily understand the signal flow and thereby operations of several RF transceiver architectures. Moreover, considering a smooth connection to RF (Radio Frequency) circuit design, we discuss the impact of RF circuit impairments on frequency conversion performances (e.g. image rejection ratios and so on) and modulation accuracies.

Keyword ： Frequency Conversion, Modulation, Demodulation, Complex Signal, RF Circuits, Impairments of RF Circuits