射频微波电路设计1.gWLiq°Tq]-pRF/Microwave Communication Circuits DesignRF2003 HW5 °G E14883032 §d° P48891066 x°§g E24882305 q N26911174 T§ (Hybrid-Ring coupler) (Coupled line coupler)E14883032 §d°¤@B 180o Ring Hybrid (Rat-Race Hybrid) ]-p Rat-Race HybridA¨¤§@Wv° ¤lAp×° 1mmC 5.8GHzA substrate ± FR-4 O]-pL{GHybrid-Ring Coupler i @ §°] P ¤ M °¤ mode)AH¤U§¤¨°R Microstrip line & Substrate analyzeG (sum mode)Mt (differencemirostripline → W = 0.954528mm, P = 6.99403mm 4 3λ mirostripline → W = 0.954528mm, P = 20.9821mm 4λ2Hybrid-Ring Coupler SchematicG1. Mí°T(sum mode)Port1 i¤JA Port2B Port3 U¤@b powerAB¨éX°T¨SìtA sum modeA§@p¤UG IsolationA§@°B Port1 M Port4 °Sum mode S-parameter analyzeG The magnitude of S11A S41(dB) z Return Loss = 46.16 dB z Isolation = 45.42dB z S11 < -……