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Loopstick Antenna Structure - Essay Example

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Summary
The paper "Loopstick Antenna Structure" highlights that the antenna is large simply so that one can collect more energy. This antenna consists of one or several complete turns of conductor which allow it to function by virtue of the circulatory current therein…
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Loopstick Antenna Structure
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Extract of sample "Loopstick Antenna Structure"

In a loop stick antenna, there is no spurious effect resulting from the capacitance of the loop to the ground. The lipstick antenna is used in domestic appliances such as portable radios, FM receivers, and RFID.   The main problem with Multi-turn design is that the losses are high and that during warm seasons the temperature can increase (Karaus and Marhefka 2001). The other advantage is its small size and directivity. In addition, the radiated power can be aimed at the required path. "In general, loops and lipsticks are used for mobile and portable operation, while phased arrays are used for fixed-station operation" (Straw 2000, p. 228).

The disadvantage of this antenna is its design. Most of the antennas have low radiation resistance which resulted in high levels of current flowing. To the resistance of such antennas, manufacturers use hard materials such as a tubular conductor or think rod. The disadvantage is high Q. This creates additional difficulties for its practical application and domestic usage (Karaus and Marhefka 2001).

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