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Prepare by: Peter Huang Date: 07/21/2005

52-5120 Training Course - Passive Component Design - Coupler/Power divider. Prepare by: Peter Huang Date: 07/21/2005. Contents. Directional Coupler Measuring Coupler Directivity Lenge Coupler Lenge Coupler example The Wilkinson Power Divider

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Prepare by: Peter Huang Date: 07/21/2005

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  1. 52-5120 Training Course - Passive Component Design -Coupler/Power divider Prepare by: Peter Huang Date: 07/21/2005

  2. Contents • Directional Coupler • Measuring Coupler Directivity • Lenge Coupler • Lenge Coupler example • The Wilkinson Power Divider • The Quadrature (90º) Hybrid • Homework exercise 2

  3. Input Through Coupled Isolated 2 21 Directional Coupler(1)

  4. Directional Coupler(2) Directional Coupler Design Step: Step 1: According to “Coupling Factor” to decide “Even mode Impedance” and “Odd mode Impedance” Coupling factor decide by designer Odd mode Impedance Even mode Impedance

  5. Directional Coupler(3) Step 2: According to “Even mode Impedance” and “Odd mode Impedance” to calculate the Wide and Gap width of Coupling line http://www.ee.bilkent.edu.tr/~microwave/programs/magnetic/dcoupler/dcoupler.htm

  6. Directional Coupler(4) Step 3: To design the Length of parallel line Odd mode Wavelength Even mode Wavelength the Length of parallel line Step 4: According to w, s, and l to simulation the directional coupler by Microwave Office2000

  7. Pc Load C Vi,Pi Pmax, Pmin Sliding Load C/D C Vi,Pi Measuring Coupler Directivity Directivity : D

  8. Lenge Coupler

  9. Lenge Coupler-example

  10. Lenge Coupler Simulation

  11. The Wilkinson Power Divider 100 ohm

  12. 1 2 3 The Quadrature (90º) Hybrid

  13. Homework exercise 2 • Design Directional Coupler Design • Regarding to your sustaining product to design one directional coupler • By paper or power point Or • Design Divider/ Quadrature (90º) Hybrid • Regarding to your sustaining product to design one divider or 90 hybrid • By paper or power point

  14. References • David M. Pozar, “Microwave Engineering” • http://www.comm.ttu.edu.tw/chu/e-medi@waves.htm • http://www.ee.bilkent.edu.tr/~microwave/programs/magnetic/dcoupler/dcoupler.htm • http://www.rfic.co.uk • RF, RFIC & Microwave Theory, Design

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