A circular loop, of loop radius / 30 and wire radius /1000, is used as a transmitting/receiving

A   circular loop, of loop radius / 30λ and wire radius /1000λ, is used as a transmitting/receiving  antenna  in  a  back-pack  radio  communication  system  at  10  MHz. The wire of the loop is made of copper with a conductivity of 5.7 × 107 S/m. Assuming the antenna is radiating in free space, determine the                                          (a) radiation resistance of the loop 

b)  loss  resistance  of  the  loop  (assume  that  its  value  is  the  same  as  if  the  wire  were straight) 

(c) input resistance 

(d) input impedance 

(e) radiation efficiency