Question
Download Solution PDFThe efficiency of an antenna having a resistance of 30 Ω and radiation resistance of 60 Ω is
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept:
The antenna efficiency of an antenna is given as:
\(\rm{\eta = \frac{{{R_r}}}{{{R_r} + {R_a}}}}\)
Rr : Radiation resistance
Ra : Effective Antenna resistance
Calculation:
Given:
Radiation resistance (Rr) = 60 Ω
Antenna resistance (Ra) = 30 Ω
\(\rm{\eta \% = \frac{{60}}{{60 + 30}} \times 100\%}\)
\(\rm{\eta \%= 66.66\%}\)
Last updated on Jun 23, 2025
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