Antenna & Microwave Communications

Modern communications have developed an intrinsic need for microwave technology. Most long distance telephone trunks, television relays, data communications, satellites broadcasts and large computer network direct-access capabilities have further engendered demand for microwave technology on every level.

As part of transmission technology, the fundamentals of antennas as applied to modern communication systems are also covered in this course.

The lab comprises three separate training systems, each addressing an essential aspect of the subject.

DTR-3 – Antennas

Subjects Covered:
• Polar Plots & Polarization
• Wave Modulation & Demodulation
• Antenna Gain and Antenna Beam Width Study
• Element Current and Front/back Ratio Study
• Antenna Matching
• Antenna Radiation with Distance

Structure:
• Set of modular mechanical elements forming various antennas
• Transmitter unit 
• Detector unit
• Accessory set packed in a convenient carrying case
• Application software
• Student manual

DTR-14 - Microwave Optics

Subjects Covered:
• Setting and Operating the Transmitter and Receiver
• Standing Waves and Wave Length Measurement
• Reflection
• Refraction and Snell’s Law
• Polarization
• Double Slit Diffraction and Interference
• Fabry-Perot Interferometer
• Voice Communications in a Microwave System

Structure:
• Microwave transmitter
• Microwave receiver,
• Goniometric scale
• Detector probe for field detection
• Digital display for measuring relative microwave signal strength
• Audio and voice communications
• Set of accessories

DTR-19 - Microstrip Communications

Experiments:
• Measuring Transmission and Reflection Loss (SWR)
• Measuring Dielectric Constant of Substrate with Ring Resonator
• Examining Power Divider - Isolation and Return Loss
• Considering Branch-line Coupler Characteristics
• Examining Parallel Line Directional Coupler - Coupling & Directivity
• Exploring Rat-race Hybrid Ring Coupler Characteristics
• Exploring Low-pass Filter Characteristics
• Exploring Band-pass Filter Characteristics
• Exploring Band-stop Filter Characteristics
• Measuring MIC Amplifier Gains

Structure:
• Microwave generator (2.2 – 3 GHz) with integral frequency counter
• VSWR meter simplifies SWR measurements
• Microwave IC components
• Gold plated components and connectors
• Student manual