Design ofNovelHighly Integrated Passive Devices forDigital Broadcasting Satellite /802.11 HomeNetworking Solution inLiquid Crystal Polymer (LCP)BasedOrganic Substrates

Theuseofhighperformance Integrated Passive Devices (IPD)allowsan optimumsolution inthetradeoff betweenintegration andflexibility fordesign modification. The paperpresents theintegration ofsub-circuits intoIPD'sfor WLAN anddistributed broadcasting satellite (DBS)applications on LiquidPolymerCrystal (LCP)-based organic substrate technology. An integrated diplexer-coupler-harmonic filter for dual-band WLAN applications andadiplexer-balun chipset for DBS applications arepresented. TheWLAN IPD measures 5x6mm,exhibits directivities of27dBand16dBinthe2.4GHz and 5GHz band,and provides 45dBofsecondharmonic rejection. TheDBS diplexer provides 45dBcrejection. Finally, the2xl.25mm DBSbalunutilizing high-inductive coupling shows ameasured amplitude andphasebalance of0.5dBand50anda minimumreturn loss of10dB. IndexTerms LCP,IPD,DBS,WLAN,Transformer, Balun, Diplexer, Coupler.