What is broadside array in antenna?
What is broadside array in antenna?
A broadside array is a one or two dimensional array in which the direction of radiation (main lobe) of the radio waves is perpendicular to the plane of the antennas. To radiate perpendicularly, the antennas must be fed in phase.
What is the directivity of end fire array system?
End-fire array
| S.No. | Broad side array |
|---|---|
| 6. | Directivity of broad side array is , D=2 |
| 7. | Beamwidth between first nulls is, BWFN= degree |
| 8. | In broad side array, all elements are equally spaced along the array axis and fed with current of equal magnitude and same phase. |
| 9. | The radiation pattern of the broadside array is bidirectional |
What is the phase excitation difference for broadside array?
In broadside side array the phase excitation difference is zero.
Why antenna array is required explain broadside and end fire array in detail?
Both, the end fire array and broad side array, are linear and are resonant, as they consist of resonant elements. Due to resonance, both the arrays display narrower beam and high directivity. Both of these arrays are used in transmission purposes.
What is operating frequency range of broadside array?
These antenna arrays operate in the frequency range between 100 MHz to 1000 MHz. It exhibits unidirectional radiation pattern in the direction from driven to parasitic element and possesses high directive gain.
How directivity of end fire array is increased?
It is observed that end-fire directivity can be further enhanced by optimizing the excitation currents of the array. Their optimal relative phase and corresponding increased directivity are also found analytically. The results are validated by a full-wave simulator.
Is gain is always greater than directivity?
Explanation: Gain of an antenna is always smaller than the directivity of an antenna. Gain is given by the product of directivity and radiation efficiency. Radiation efficiency can never be greater than one. So gain is always less than or equal to directivity.
What is phase excitation difference for an end-fire array?
The phase excitation difference is zero in end-fire array. Explanation: In end-fire array the phase excitation difference is ±kd and their phase vary progressively and get unidirectional maximum radiation finally. In broadside side array the phase excitation difference is zero.
