An optical true-time delay (OTTD) engine based on a polynomial White cell (quadratic) is designed and simulated with commercially available components with a time delay increment of at least $25\mathrm{ps}$ for wideband beam steering in the frequency range of $2–18\mathrm{GHz}$ . The simulated quantification of aberration losses show for the first time that aberration losses in the null cell are about $5.0\mathrm{dB}$ . However, for the longer delay arms, there is an additional loss of about $3.2\mathrm{dB}/\text{delay}$ each time a beam travels an arm with a lens train used as a delay element compared with the same delay generated without a lens train. We present a design and simulation of a low-loss delay arms quartic cell without a lens train by using a separate field lens for each delay arm for efficient wideband beam steering.