An antenna is placed in a dielectric medium of dielectric constant $6.25$ . If the maximum size of that antenna is $5.0 mm$ , it can radiate a signal of minimum frequency of _____ $GHz$ .
(Given $μ_{r} = 1$ for dielectric medium)

Question

An antenna is placed in a dielectric medium of dielectric constant $6.25$ . If the maximum size of that antenna is $5.0 mm$ , it can radiate a signal of minimum frequency of _____ $GHz$ .

(Given $μ_{r} = 1$ for dielectric medium)

MARKS Content Team · Accepted Answer

Correct answer: 6. We know that, refractive index is related to velocity as n=c/v. Here, n=√(ε_rμ_r)=√6.251=2.5 Since, effective length of antenna l>(λ)/4⇒l>v/4f So, f>v/4l=c/4l2.5=(3×10^8)/(2.5×4×5×10^(-3))=6×10^9 Hz=6 GHz.

An antenna is placed in a dielectric medium of dielectric constant $6.25$ . If the maximum size of that antenna is $5.0 mm$ , it can radiate a signal of minimum frequency of _____ $GHz$ .
(Given $μ_{r} = 1$ for dielectric medium)

Solution

Relevant Questions

An antenna is placed in a dielectric medium of dielectric constant 6.25. If the maximum size of that antenna is 5.0 mm, it can radiate a signal of minimum frequency of _____ GHz. (Given μr=1 for dielectric medium)

Solution

Relevant Questions

An antenna is placed in a dielectric medium of dielectric constant $6.25$ . If the maximum size of that antenna is $5.0 mm$ , it can radiate a signal of minimum frequency of _____ $GHz$ .
(Given $μ_{r} = 1$ for dielectric medium)