Question $(5$A$)-$ Assuming signal level for the preceding bit is high, sketch neat waveforms for Manchester, Differential Manchester, Bipolar AMI, NRZI and Differential PSK digital encoding techniques for the input digital data $1100011101.$ Assume that the signal level for the preceding bit for NRZI was high; the most recent preceding $1$ bit $($AMI$)$ has a negative voltage, and the most recent preceding $0$ bit $($pseudo ternary$)$ has a negative voltage.

Question $(5$B$)-$ Explain parabolic reflective antenna with a neat diagram. what is the effective area for a parabolic reflective antenna with a diameter of $1\mathrm{.}5$ m$,$ operating at $6$ GHz$?$

Question $(5$B$)-$ Differentiate Twisted and Co$-$axial cable.