Monday12 Group2

From School2007

Dairy: Monday 05 February 2007 by Angeline Quaye, Ghana, Howida Elsheikh, Sudan

[edit] Morning with antenna theory

Today, we had a beautiful day with a lecture delivered by Prof. Struzak, titled "Basic Antenna Theory". Cool one there. We had a Review of the basic antenna types. More light was thrown on the types of antennas, which include the Slot & INF antennas,Aperture-antennas, Lens antennas , the Reflector antennas and Smart antennas. We came to appreciate their uses and characteristics. We also learnt about Radiation pattern, their gain and polarization. He also talked to us about Equivalent circuit & radiation efficiency

Prof. Struzak couldn't have ended his lecture without talking about some very important theory behind the above.

Array antennas

[edit] Antenna biulding

In this exercise we successfully made three antennas working in the frequency range of 2.4GHz. The tools used in this exercise included the following:

Ruler
Pliers
Soldering iron and solder
Drill with a set of bits for metal (including a 1.5 cm diameter bit)
A piece of pipe or a drill bit with a diameter of 1 cm
Vice or clamp
Washer

The following is the procedure for building an antenna:

First we measured 6 cm from the end of the can, after which we drilled a hole that should accommodate the N connector.
we straightened the wire using the vice.With the soldering iron, the central pin of the connector was pinned.
The connector was prepared by attaching the wire to it and this was fixed into the drilled hole.

The pictures show the procedure above.