Microwave Engineering Chap 5 8 Chap 6 4

Microwave Engineering Chap. 5. 8 ~ Chap. 6. 4 EMLAB

5. 8 Tapered Lines 1 EMLAB

5. 8 Tapered Lines (cont’d) § 2 Total reflection coefficient at z=0 u Exponential Taper § At z=0, Z(0)=Z 0. At z=L, Z(L)=ZL=Z 0 ea. L. EMLAB

5. 8 Tapered Lines (cont’d) 3 u Triangular Taper EMLAB

5. 8 Tapered Lines (cont’d) 4 EMLAB

5. 9 The Bode-Fano Criterion 5 Bode-Fano Criterion EMLAB

6. 1 Series and Parallel Resonant Circuits 7 u Series Resonant Circuit § Wm=We 이면 공진. 입력 임피던스와 주파수: EMLAB

6. 1 Series and Parallel Resonant Circuits (cont’d) 9 EMLAB

6. 1 Series and Parallel Resonant Circuits (cont’d) 10 u Parallel Resonant Circuit (Antiresonant Circuit) § Wm=We. 이면 공진. 입력 임피던스와 주파수: EMLAB

6. 1 Series and Parallel Resonant Circuits (cont’d) 11 EMLAB

12 6. 1 Series and Parallel Resonant Circuits (cont’d) § 공진회로에 부하가 연결되어 있는 경우의 Q 를 loaded Q 라 하며 QL. § 부하 등에 의한 Q 를 external Q, QE 라 함. EMLAB

6. 2 Transmission Line Resonators 13 EMLAB

6. 2 Transmission Line Resonators (cont’d) 14 (series RLC) EMLAB

6. 2 Transmission Line Resonators (cont’d) 15 (parallel RLC) EMLAB

6. 2 Transmission Line Resonators (cont’d) 16 EMLAB

6. 2 Transmission Line Resonators (cont’d) 17 (parallel RLC) EMLAB

6. 3 Rectangular Waveguide Cavity Resonators 18 EMLAB

6. 3 Rectangular Waveguide Cavity Resonators (cont’d) 19 EMLAB

6. 3 Rectangular Waveguide Cavity Resonators (cont’d) 20 EMLAB

6. 3 Rectangular Waveguide Cavity Resonators (cont’d) § Tangential H field 를 이용, 도체벽에서 소실되는 전력 계산. § Unloaded Q of the cavity with lossy conducting walls (but lossless dielectric filling) 21 EMLAB

6. 3 Rectangular Waveguide Cavity Resonators (cont’d) § 유전체로 인해 소실되는 전력 § Unloaded Q of the cavity with a lossy dielectric filling (but perfectly conducting walls) § Total power loss = Pc+Pd. 22 Total unloaded Q: EMLAB

6. 4 Circular Waveguide Cavity Resonators 23 EMLAB

6. 4 Circular Waveguide Cavity Resonators (cont’d) 24 EMLAB

6. 4 Circular Waveguide Cavity Resonators (cont’d) § Total stored energy: § Tangential H field 를 이용, 도체벽에서 소실되는 전력 계산. 25 EMLAB

6. 4 Circular Waveguide Cavity Resonators (cont’d) § Unloaded Q of the cavity with imperfectly conducting walls (but lossless dielectric filling) § 유전체로 인해 소실되는 전력 § Unloaded Q of the cavity with a lossy dielectric filling 26 EMLAB