4.67. A vertical, infinitesimal in length (I = 1/50), monopole is placed on top of a police car, and it is used as an antenna for an emergency radio receiver system operating at 10 MHz. Consider that the top of the police car to be an infinite and planar PEC.The sensitivity (minimum power) of the system receiver, to be able to detect an incoming signal, is 10 µwatts. Assume the incoming signal is circularly polarized and it incident from a horizontal direction (grazing angle; 0 = 90°), what is the: (a) Maximum directivity of the monopole in the presence of the PEC (dimensionless and in dB)? (b) Minimum required power density (in watts/cm²) of the incoming signal to be detected by the radio receiver?

4.67. A vertical, infinitesimal in length (I = 1/50), monopole is placed on top of a police car, and it is used as an antenna for an emergency radio receiver system operating at 10 MHz. Consider that the top of the police car to be an infinite and planar PEC.The sensitivity (minimum power) of the system receiver, to be able to detect an incoming signal, is 10 µwatts. Assume the incoming signal is circularly polarized and it incident from a horizontal direction (grazing angle; 0 = 90°), what is the: (a) Maximum directivity of the monopole in the presence of the PEC (dimensionless and in dB)? (b) Minimum required power density (in watts/cm²) of the incoming signal to be detected by the radio receiver?

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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