Is there any possibility to bring a radar system in mobile phones ?

Question

It would be like a portable radar.

Answer 1

I'm pretty sure that's impossible, unless you happen to be Batman.

Answer 2

I guess there is no end to the demands upon the little cell phone.  The applications have grown and grown until now it doesn't do any one task very well.  Radar?  A Microwave?  How about an outboard motor for a boat?  Or a sunscreen applicator?  Already it is a phone, camera, record player, calculator, game boy, address book, email processor, web searcher, gps, alarm clock, timer, clock, and the list goes on!

Radars require a very directive antenna.  Also, it must have a large enough antenna to capture sufficient signal to process.  Plus, it would require a dangerous amount of microwaves.  Plus, plus, plus!

In reality there is already one in my iPhone 1G.  It measures the delays between towers to find out where you are.  Just like a radar.

Old cell phones make a great paperweight, by the way...