“…To construct a balanced mixer, a well-designed broadband balun with inherent isolation, cancelation of local oscillator (LO) noise, low intermodulation products, and good conversion efficiency was reDesign of A Compact Single-Balanced Mixer for UWB Applications commended. Broadband hybrid couplers as mixer baluns were implemented with a combination of different kinds of transmission lines, such as coplanar waveguide and slot line [5], Gilbert cell [6], substrate integrated waveguide (SIW) couplers [7,8], and multi-layer ring hybrid [9]. In [7,8], SIW couplers were utilized to design single-balanced mixers.…”