Murad sir, Jf-17 does not even use composites does it?
There is a reason that only US has been able to achieve in building planes of 5th generation.
If you say that JF-17 can be converted to a 5th generation fighter, then the Jags, Mirage 2005's, MiG 29's as well as Su's can be converted to 5th generation fighters.
yes very true but there are more than one way to make your fighter stealthy.
Previous systems in airplanes utilizing special materials, dramatic fuselage, intake and wing designs that create stealthy fighter jets could, therefore, be rendered obsolete in a single stroke. But there are systems out there well in the realm of possibility.
Positron Rings And Anti-Microwaves
Positrons (which can also be understood to be Electrons with a positive charge)
The easiest way to create anti-Microwaves is to circulate beams of positrons in a ring-like fashion and then boost their signals via signal amplifiers. The positron beams might be guided by electromagnets in circular fashion.
This could be accomplished in present AWACS planes, which might "jam" enemy RADAR ahead of incoming fighter jets. Anti-Microwaves, which are nothing more than precisely 180 degree out-of-phase ordinary RADAR, might cancel out at a significant distance (or perhaps even close to the aircraft) from ordinary RADAR systems.
This might allow an open attack to take place. Another alternative design might be to isolate and then oscillate conventional positrons in a back and forth motion much like electrons in an ordinary antenna. Hence, each fighter jet might be stealthy and have its own internal anti-Microwave system. This might have to be carefully designed, so as to eliminate electrons-positron annihilations or a lit up explosion of light. A proven ring design might, therefore, be preferable in this situation.
For example, if each fighter jet had its own ring system incorporated into the design of the plane, each airplane might become stealthy. These rings might be mounted on the fuselage or into the wings themselves.
Conclusion
So, outgoing waves of anti-Microwaves join up with incoming Microwaves and in turn cancel them out. All aircraft might incorporate these rings into their designs and manufacture making them stealthy. To observers on the ground, no return signal would be received at all, hence, no RADAR image of incoming fighters, helicopters or bombers.