The best design of
microstrip Yagi antenna for one branch has been chosen to
design the proposed antenna of two branches. Simple
fabrication technique that is inexpensive can be employed to
realize the design using FR-4 substrate with feeding structure
on the same layer as the antenna. The result of proposed
antenna shows that the antenna performance is better compared
to antenna design of one branch. The percentage increasing of
gain from one branch to two branches is 16 %. Hence, by
designing the microstrip Yagi antenna of two branches, a good
return loss and a high gain can be achieved by placing parasitic
patches around driven element in array format.