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Antenna Systems Demonstrator ASD512
This is a fully operational Antenna System Demonstrator, working at a
frequency of 167.2MHz, giving a half-wave element of approximately 90 cm.
It has been designed to provide an ideal classroom demonstrator.
The system is provided with a kit of parts allowing many types of antenna to
be constructed, making the system versatile as a demonstrator of both antenna
principles and practice.
The system has two hand-held detectors that show relative magnitudes of
voltage and current fields around the antenna, and the field strength of the
antenna. Practical demonstrations are described in the accompanying manuals,
illustrating the principles involved and introducing the student to the various
basic concepts of most types of antennas in common use.
Curriculum Coverage
- Basic theory of radiation
- Radiating and non-radiating systems
- Feeders
- Radiation resistance
- Drive point impedance and ground resistance
- Physical and electrical length
- Directional antennas and radiation patterns
- Parasitic arrays & antenna gain
- Antenna with folded elements
- Slot radiators
- 3-dimensional polar diagrams
- Loop antenna
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