A broad-band coplanar waveguide to slotline transition

Phased array antenna analysis with the hybrid finite element method

“…The design shown in 2 uses a novel coplanar waveguide (CPW)-slotline transition by Ho and Hart [19] to restrict metallization to one side of the substrate only. The coaxial waveguide feeds a short section of coplanar waveguide that transitions to slotline by terminating one of the parallel slots in a broadband open.…”

A dual-field domain-decomposition method for the time-domain finite-element analysis of large finite arrays

“…The coplanar waveguide consists of two slots, one of which evolves as the flared slotline and the other ends at a hollow circle cut on the conducting patch. The hollow circle serves as a wide-band open circuit that contributes to the broadband behavior [29]. The advantage of this design is that metallization is applied to only one side of the substrate and no via-holes are needed for ground connections.…”

“…Assuming that V m has L m neighbors and thus L m interfaces, then (27)- (29) need to be modified as:…”

Development of Coplanar Waveguide to Rectangular Waveguide Transition

“…The second step, the mode conversion from unilateral fin-line to Coplanar Waveguide is based on a wideband slot-lineto-CPW transition using a slotline radial stub, [8], [9]. Other slot options are also available as well, like twinspiral slot, a circular slotline end as presented in [10], [11], respectively. The slotline radial stub is used because it provides wide bandwidth and improves the insertion loss.…”