Please help me solving this problem .. an engineer is designing an antenna that
ID: 1676219 • Letter: P
Question
Please help me solving this problem ..an engineer is designing an antenna that send andreceive electromagnetic waves has a length of (Lambda)/2 and frequency 600MHZ , Find: A) Lambda? B)The appropriate change indimensions so we can use this antenna to send and receive with the same frequency but under the water??
this is urgent .. any help willbe appreciated :)
an engineer is designing an antenna that send andreceive electromagnetic waves has a length of (Lambda)/2 and frequency 600MHZ , Find: A) Lambda? B)The appropriate change indimensions so we can use this antenna to send and receive with the same frequency but under the water??
this is urgent .. any help willbe appreciated :)
Explanation / Answer
Frequency f = 600 MHz = 600 * 10 ^ 6 Hz
Wavelength = speed of EM wave / f
= ( 3 * 10 ^ 8 ) / ( 6* 10 ^ 8 )
= 0.5 m
(A). lamda = 0.5 m
(B). Speed of light in water v = c / n
v =( 3 * 10 ^ 8 ) / ( 4/ 3)
= 2.25 * 10 ^ 8 m / s
Wavelength in water = v / f
= 0.375 m