froten
Member level 3
Hello all,
I'm trying to design a radio transmitter at frequency 3.5 to 4 Mhz.
The bigest problem is the Antenna design. At 4Mhz the half-wavelenght antenna will be 37.5 m, which is not acceptable at all due to space limits, even quarter-wavelenght is not acceptable.
what is the recommended antenna that has small size like 1m lenght or diameter that can be used.
Thanx in advance for any help.
I'm trying to design a radio transmitter at frequency 3.5 to 4 Mhz.
The bigest problem is the Antenna design. At 4Mhz the half-wavelenght antenna will be 37.5 m, which is not acceptable at all due to space limits, even quarter-wavelenght is not acceptable.
what is the recommended antenna that has small size like 1m lenght or diameter that can be used.
Thanx in advance for any help.