Antenna with wire elements

[Admin 2545]

 

[Admin 2545]

[Admin 2545]

Amos Inverted Antenna

InvAmos5

 

[Admin 2545]

InvAmos9

 

[Admin 2545]

The LAZY "H" antenna is a general type of antenna that is in the curtain array family. By placing 2X4 wavelength dipoles in a plane that is at right angles to the direction of maximum radiation and keeping the proper in-phase current condition to each element, you can achieve a HIGH GAIN directional antenna.

 

 

[Admin 2545]

Antenna 88

 

 

[Admin 2545]

,,,simple dipole antenna...

 

[Admin 2545]

The quad antenna consists of a square loop of wire as shown in the figures below . The side of the loop is approximately lambda/4 in length and it is normally fed with 50-- 75*lambda coaxial cable at the point shown. The loop can be mounted with a diagonal vertical and fed at the bottom corner; in either case the feed point is a current maximum and the performance is identical. In the configuration shown, the polarisation is horizontal. If fed from the side of the loop, the polarisation will be vertical.

 

 

[pragata.my.id 25]

amazing

[pragata.my.id 25]

my first imagination

[Admin 2545]

,,, and how do you make the connection between the spirals .. ??

[pragata.my.id 25]

because of the limitations of measuring devices, I only use "signal quality" information on the router asus rt-n10u ddwrt.
I call this antenna "capucino" because of its coffee-like shape in a glass.
from the experimental results I made, (C-3) is best in my opinion, that is, in series, the middle connecting point.
because of the complexity of making it, i left the project behind.

Edited December 6, 2017 by pragata.my.id

[Admin 2545]

"no, no, I want to see how you typed spirals between them ///

[pragata.my.id 25]

wear the same copper wire.

[pragata.my.id 25]

can you tell me the detail construction of this antenna?

[Admin 2545]

21 minutes ago, pragata.my.id said:

wear the same copper wire.

 

I will simulate such an antenna,,,!!!

 

[pragata.my.id 25]

length of spiral wire I use 4 x lamda = 4 x 123,86 = 495,44mm.
the distance between the spiral with the reflector is about 35mm.

[Admin 2545]

,,,so...???

60mm outer diameter

 

,,,or so...

[pragata.my.id 25]

diameter wire = 2mm
diameter spiral = 44-46mm

Edited December 6, 2017 by pragata.my.id

[pragata.my.id 25]

which is correct according to the theory that I can on the internet between the 2 wire is connected, but why in fact, better separated? positive and negative poles.

like this.

Edited December 6, 2017 by pragata.my.id

[Admin 2545]

connection with 50ohm coaxial cable...??

[pragata.my.id 25]

wear the same copper wire.

[pragata.my.id 25]

6 minutes ago, pragata.my.id said:

wear the same copper wire.

please help me, use whatever construction is up to admin father, to achieve maximum performance of this antenna model, yesterday i only use the same copper wire with spiral.

[Admin 2545]

you have to make an adaptation line with PCB...

[pragata.my.id 25]

4 minutes ago, Admin said:

Anda harus membuat garis adaptasi ...

thank master, for this suggestion. or may also need additional reflectors in front of it?