Receiving Antennas

8.0 Introduction

In Chapter 2 and 3, I pointed out that an antenna is a transducer, so any antenna is capable of both transmitting and receiving operation. However, in many applications the antenna is not required to transmit. These applications include broadcast reception, direction finding, and spectrum monitoring. Without the need to transmit, the voltage or power-handling capability needed is much lower, which makes the hardware less expensive, and makes it possible to use materials that otherwise wouldn’t stand the stress of transmitting. The receive-only application makes signal-to-noise ratio and consistent performance over very wide frequency bandwidth criteria that can be improved at the expense of impedance-matching ...

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