Contents
What is a folded dipole?
A folded dipole is an antenna, with two conductors connected on both sides, and folded to form a cylindrical closed shape, to which feed is given at the center. Hence, it is called as half wave folded dipole antenna. The directivity of Folded dipole Antenna is bi-directional. The input impedance is higher.
Can you bend a dipole?
In many ways, horizontally bending or zig-zagging a dipole is superior to vertically bending the antenna. At any height, horizontal bends tend to preserve both gain and directivity. The cost is a more rapid decrease in the feedpoint impedance.
Will a bent antenna still work?
By bending the antenna, you change it’s ability to radiate on the proper frequency. Generally you will still get some energy on the desired frequency, but the signal will be worse because it is less efficient.
Can I bend an end fed antenna?
If needed, bend it to make it fit. Your radiation pattern is not great to begin with since your antenna is not that high and inside of your attic. You won’t be making the pattern much worse.
What’s the trick to modeling a folded dipole?
The trick to modeling folded dipoles is to use many segments. The end wires connecting the parallel wires are a limiting factor. In NEC, we want the segment lengths in the parallel wires to be less than a 2:1 ratio in length to the segments in the end wires.
How are the ends of a folded dipole antenna connected?
A folded dipole is a dipole antenna with the ends folded back around and connected to each other, forming a loop as shown in Figure 1. Figure 1. A Folded Dipole Antenna of length L.
How many ohms are in a folded dipole?
Hence, a folded dipole using equal wire diameters for both wires will be about 284 to 288 Ohms. Now let’s note some other aspects of the equation. There is no rules against using wires of different diameter for d1 and d2.
Which is better double bazooka or folded dipole?
While double bazooka or folded dipole antennas can offer significantly more bandwidth than a thin wire dipole, it is important to understand whycertain antennas have more bandwidth. Let’s look at a folded dipole and see how it really behaves.