As we all experience this that radio waves loses its strength while transmitting through environment. That is why we have to Amplify the signal before and after processing it.Do you have any solution to improve the strength of RF Waves?
Not amplification but gain of antenna related factors in Friis transmission equation mitigate the 1/R factor (1/R^2 for power)
We can't amplify the signal but gain and matching of receiving antenna with the output rectifier circuit matter
The factor is actually 1/(4*pi*R^2) , that is the total energy remains constant when integrated over the surface of a sphere with the transmitter at the center. Consequently, the energy or power per unit area goes down as 1/R^2 as you get farther from the transmitter. So to collect this energy you build an antenna that collects the energy from the area of the aperture -- bigger antenna, bigger area, more energy. We often characterize the effective area of an antenna A in terms of its gain G using the relationship G = 4*pi*A/Lambda^2 where lambda is the wavelength, but what a receiving antenna is actually doing is collecting energy (or power) from an area. What allows this collection is that the incident electric field is a plane wave. In EE-speak, an aperture antenna is a matched filter to a plane wave. Other types of antennas, a dipole for example, are characterized by their gain, but the expression above allows on to also consider them as apertures with some effective area collecting energy from plane waves.
Turn the propagating medium into a Lasing medium and get propagation gain.
Warp space-time to get something similar to gravitational lensing along the propagation path. I think just having a very high intensity beam would do this, a high concentration of mass-energy creates a gravitational well.
Use lasers to heat air around the propagation path to get a lensing effect.
I think these would work but are not practical solutions, at least partly because they probably involve using more energy that would be saved by them.
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