Chireix- Mesny antenna may be used for operation on 1295 MHz. Design of the antenna is shown in Figure 1. The antenna has wide pass band- 290
MHz at SWR less the 1.5:1. So it is not strictly demand to keep
the sizes as shown in the drawing. Antenna has input impedance 200
Ohm so it is possible match the antenna with50- Ohm coaxial cable
with help of 4:1 transformer.
It is possible to bridge
four such antennas to feed the system with 50- Ohm coaxial cable.
In this case DD of the system would be narrow compare to one element
antenna. Antenna may be made from almost any stuff, copper, aluminum
or stainless wire. You may play with model to see how the parameters
will be changed depends on the used stuff.
Figure 2 shows Z of the UR0GT Chireix- Mesny Antenna for the
1295 MHz. Figure 3 shows SWR of the UR0GT Chireix- Mesny Antenna for the 1295 MHz.
4 shows DD
of the UR0GT Chireix- Mesny Antenna for the
73 Nick, UR0GT
You could find some more information on Chireix- Mesny Antenna that published
in AntenTop magazine:
Horizontal Antenna with Vertical Polarization for
the 2- meter Band
Chireix- Mesny TV Antenna