Abstract
Radar is an important device for monitoring border security of Indonesia territory. The radar consists of several components, one of which is an antenna that works in the X-band. Usually, slot antennas are often used in navigation radar from an array fed by a waveguide. There are two types of slot placement positions on the slotted waveguide antenna i.e broad wall and narrow wall slotted waveguide antenna. This paper discusses a design and simulation of the addition the number of slots on narrow wall waveguide antenna at X-band 9.4 GHz. The simulation results showed that the increment of slots number will narrow the bandwidth. However, compared to the broad wall slotted waveguide antenna, a narrow wall slotted waveguide antenna yield a wider bandwidth in the same number of slots and slot width.
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