For Isotropic antenna, the value of beam area and directivity is

Gain is lower than Directivity is due to ______

Poynting vector is defined as

Power density at any distance from an isotropic antenna is simply the transmitted power dived by the _______ at that distance.

In Isotropic Antenna, if the radiated power is calculated by taking half-wave dipole as the reference, ______

The amount of power that an isotropical antenna radiated to produce the peak power density observed in the direction of maximum antenna gain, _____

_____ is focused in a particular direction, while it is transmitting or receiving.

______ of a non-isotropic antenna is equal to the ratio of the radiation intensity in a given direction to the radiation intensity of the isotropic source.

The energy radiated by an antenna is represented by the ______ of the antenna.

____ pattern is sharp directional pencil shaped pattern.

The beam which is non-uniform and patternless is known as _____

The antenna impedance must be matched by the ______ it if maximum _______ is to be achieved

An antenna with an aperture at the end can be termed as ________ antenna

______ is the ratio between reradiated power and power density of incident wave.

The value of scattering ratio ranges from ______

_____ is ratio of maximum effective aperture to the physical aperture