Chang, "Wideband coplanar stripline to double-sided parallel-strip line
transition," Electronics Letters, vol.
The balanced-TL approach uses the same transmission line design at the front- and ground-plane structure, which also can be called as a double-sided parallel-strip line. The details of the double-sided parallel-strip line technique are discussed in  wherein they implemented it in their proposed filter design.
Chang, "Ultrawide-band transitions and new microwave components using double-sided parallel-strip lines," IEEE Transactions on Microwave Theory and Techniques, Vol.
Another wideband bandpass filters with an ideal DSPSL (double-sided parallel-strip line
) 180 phase inversion was introduced in .
In this paper, in order to achieve high impedance transmission line, an ATL with double-sided parallel-strip lines
(DSPSLs) has been proposed.
Xue, "Novel 5 : 1 unequal Wilkinson power divider using offset double-sided parallel-strip lines
," IEEE Microw.
In , a novel ultra -wideband (UWB) differential filter is presented based on double-sided parallel-strip lines
. In [2,3], differential-mode UWB BPFs are fabricated with multiple stages branch-line.