noisedistortioninmicrowavesystems-預(yù)覽頁(yè)
【正文】 dBdBPIP 15123 1 ~??2021211 VaP ??602332923034321221 VaVaP ??? )(??1? 2?212 ?? ? 122 ?? ?Where the first order and third order powers are equal 221216233292121 IPIP VaPVaP ???? ???3134aaVIP ?331221213 32301 aaVaPPIPIPVVIP???? ??Input IP3 Output IP3 )()( dBPdBP 121 32 ??? ??? ?2332121 )()(PPP ??? ??)()()( dBPdBPdBP 32 23 121 ??? ????Dynamic Range 1dB Pin(dBm) P out(dBm) Input P1dB Output P1dB Input IP3 Output IP3 Linear Dynamic Range ( DRl ) )()( dBNPdBDR ol ?? 1dBNPdBDR of )()( ?? 332SFDR: Spuriousfree Dynamic Range ( DRf ) 無雜散動(dòng)態(tài)范圍（寄生響應(yīng)最?。? DRl DRf 060233292 21 NVaP ??? ??32320122121 /)(oNPf NPPPDR ???? ? ?????212 ?? ? 122 ?? ?1? 2??Intercept（截?cái)啵? Point of Cascaded Components V?G1 IP3’ G2 IP3’’ 2332121 )()(39。30339。 3 32 0 0 320 39。 PPGPV?139。 5 Passive Intermodulation（無源交調(diào) PIM） ?Generated by passive nonlinear effects in any Metaltometal Contact: Cable（ 電纜 ） , Connectors, Antenna, etc… ?Caused by ?Poor mechanical contact ?Oxidation（ 氧化 ） Junctions between Ferrousbased（ 鐵基 ） metals ?Contamination（ 污染 ） of conducting surface at RF junctions ?Use of Nonlinear Material, such as Fiber posites（ 纖維復(fù)合物 ） or Ferromagic material（ 鐵氧體材料 ） ?PIM only significant（ 明顯 ） when HIGH Power ?Cellular Telephone BS Transmitter（ 蜂窩電話基站發(fā)射臺(tái) ） Pout=3040 dBm , PIM 125dBm
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