The circuit performances of the BA, PPA and IRM are depended on the characteristics of the quadrature hybrid couplers and baluns.

• 由本论文之模拟及实验结果可知，使用宽频90a及180a相位差之功率分配器设计平衡式放大器、推挽式放大器及映像频带消除混波器可有效改善其电路性能。