SOLAR SYSTEM

UNIVERSE

SATELLITESICY BODIES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
To make antenna more directional, either its size must be increased or ____ .
A
the number of its feed horns must be increased
B
the frequency of its transmission must be increased
C
its effective isotropic radiated power (EIRP) must be increased
D
its footprint must be increased
Explanation: 

Detailed explanation-1: -A directional antenna is an antenna that radiates or receives greater power in a specific direction allowing increased performance. To make the antenna more directional, either its size must be increased or the frequency of its transmission must be increased.

Detailed explanation-2: -When transmitting, a high-gain antenna allows more of the transmitted power to be sent in the direction of the receiver, increasing the received signal strength. When receiving, a high gain antenna captures more of the signal, again increasing signal strength.

Detailed explanation-3: -Choose the Right Antenna Size Ideally, the antenna length should be equivalent to the wavelength of a signal. However, this is often not practical given the very long wavelength of LPWAN signals. As a rule of thumb, antenna size of ½ or ¼ wavelength will produce good results.

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