Measured mutual coupling between linearly tapered slot antennas

1997 ◽  
Vol 45 (8) ◽  
pp. 1320-1322 ◽  
Author(s):  
R.Q. Lee ◽  
R.N. Simons
Keyword(s):  
Mutual Coupling ◽  
Slot Antennas

Employing the dumbbell-shaped longitudinal slot antennas in the planar slotted antenna arrays

2021 ◽  
pp. 1-12
Author(s):  
Mahdi Moradian
Keyword(s):  
Antenna Arrays ◽  
Mutual Coupling ◽  
Higher Order ◽  
Slot Antennas ◽  
Higher Order Modes ◽  
Planar Array ◽  
Slotted Antenna ◽  
Simulation Results ◽  
End To End ◽  
Longitudinal Slot

Abstract The dumbbell-shaped longitudinal slot antennas are employed as a replacement for the round-ended longitudinal slot antennas. Each dumbbell-shaped slot is excited by an iris and a septum that have offsets from the waveguide centerlines. All the slots are also cut along the waveguide centerlines. It is demonstrated that the resonant length of the proposed dumbbell-shaped slot antennas is much smaller than the round-ended longitudinal slot antennas. Hence, the end-to-end spacings between the adjacent radiating slots as well as the end-to-end spacings between the coupling and the radiating slots increased noticeably in comparison with the arrays consist of the round-ended longitudinal slot antennas. This fact indicates that one can neglect the mutual coupling between the neighboring slots that are associated with the exciting higher-order modes at the slot positions. To better demonstrate the effectiveness of the proposed dumbbell-shaped slot antennas, a planar array antenna consists of the proposed dumbbell-shaped slot antennas have been designed, implemented, and tested. The measurement and the simulation results confirm the effectiveness of the proposed slot antennas.

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