  The zero correlation zone (ZCZ) ratio, i.e., the ratio of the width of the
ZCZ and the length of the sequence plays a major role in reducing interference
in an asynchronous environment of communication systems. However, to the best
of the author's knowledge, the highest ZCZ ratio for even-length binary
Z-complementary pairs (EB-ZCPs) which are directly constructed using
generalized Boolean functions (GBFs), is $\frac{2}{3}$. In this research, we
present a direct construction of EB-ZCPs through GBFs, which can achieve a ZCZ
ratio of $\frac{3}{4}$. In general, the constructed EB-ZCPs are of length
$2^{m-1}+2$, having a ZCZ width of $2^{m-2}+2^{\pi(m-3)}+1$ where pi is a
permutation over $m-2$ variables.
