The simulated result of the proposed microstrip Yagi
antenna is clearly found that the return loss of 20.38 dB and
antenna gain of 9.5 dB is much better compared to one branch.
The proposed antenna designed of two branches shows that the
gain is increased by 2.61 dB from 6.89 dB of one branch. Thus,
the percentage of gain enhancement from one branch to two
branches is 16 %. High gain antennas is preferred because it
have the benefit of longer range and signal quality is better
compared to low gain.