T 型与π型衰减网络

TT50Ω75Ω1RRRI+Ω=501.2T2.T33..2T:ORR2ORR1R1IROR1RR2OUIU−−++1RIRRRRI+Ω=5050ΩIUOU−−++OORRRRR=++121//)(OOOIOIOIOURRRURRURRURR=++++)())((1121111+−=IOIOOUUUURR1)(222−=IOIOOUUUURR3)11(1−+=IOIOOUUUURRIOIOOUUUURR21)(22−=50Ω20dBTdBUUIO20lg20=10=IOUUΩ=9.401RΩ=1.102R4TTOR2R3RIU−−++1ROU−IROR=50ΩΩ9.40OUIU−−++Ω9.40IR=50ΩΩ1.105TOIIIIIIIIURRRURRURRURR=++++)())((1231OIRRRRR=++231//)(IORRRRR=++132//)(IIOOIIOIIOOIRUURRUURUURRR−−−=12)1(221OIOOIIOIIORUURRUURUUR−−−=12)1(22212223−=IOOIIOIUURRUURR50Ω20dBTdBUUIO20lg20=10=IOUUΩ=50IRΩ=50ORΩ=−−−=9.40501)10(*505010*50*2)110*5050(21RΩ=9.402RΩ=1.103R6OR=50ΩΩ1.10OUIU−−++Ω9.40IR=50ΩΩ9.40