Directional Coupler References
Updated 27 February 2003
  1. Agrawal, A.K. and G.F. Mikucki, "A Printed Circuit Hybrid-Ring Directional Coupler for Arbitrary Power Divisions," Proceedings of the 1986 IEEE Symposium on Microwave Theory and Techniques, pp. 139-142.
    
    
  2. Agrawal, A.K. and G.F. Mikucki, "An improved Hybrid-Ring Directional Coupler for Higher Power Split Ratios," Microwave Journal, Nov 1986, pp. 87-98.
    
    
  3. Buntschuh, C., "Octave-Bandwidth, High-Directivity Microstrip Couplers," Rome Air Development Center Report #RADC-TR-74-396, Jan 1974.
    
    
  4. Carr, Alan R., "A High Power Directional Coupler," RF Design, Sep 1989, pp. 35-37.
    
    
  5. Collins, S. and K. Flynn, "Intermodulation Characteristics of Ferrite-Based Directional Couplers," Microwave Journal, Nov 1999, pp. 122-130.
    
    
  6. Cristal, E.G., "Coupled-Transmission-Line Directional Couplers with Coupled Lines of Unequal Characteristic Impedance," IEEE Transactions on Microwave Theory and Techniques, Vol. MTT-14, No. 7, Jul 1966, pp. 337-346.
    
    
  7. Ellis, M.G., "RF Directional Couplers," RF Design, Feb 1997, pp. 30-44.
    
    
  8. Ho, C.Y. and M. Carlson, "Effect of Directional Coupler's Conduction Loss on Its Phase Balance," Microwave Journal, Nov 1984, pp. 185-188.
    
    
  9. Howard, J. and M. Lavey, "Design a Directional Coupler Using a Sinusoidal Coefficient," Microwaves & RF, Mar 1998, pp. 150-152.
    
    
  10. Howard, J. and W.C. Lin, "Coupler Design Delivers Low-Ripple Performance," Microwaves & RF, Sep 1998, pp. 72-74.
    
    
  11. Howard, J. and W.C. Lin, "Design Approacg Yields Broadband Directional Couplers," Microwaves & RF, Sep 1999, pp. 113-114.
    
    
  12. Kajfez, Darko, "Raise Coupler Directivity with Lumped Compensation," Microwaves, Mar 1978, pp. 64-70.
    
    
  13. Kim, D.I., M. Takahashi, K. Araki, and Y. Naito, "Optimum Design of the Power Dividers with Ferrite Toroids for CATV and/or MATV Systems," IEEE Transactions on Consumer Electronics, Vol. CE-29, No. 1, Feb 1983, pp. 27-38.
    
    
  14. Levy, R., "Tables for Asymmetric Multi-Element Coupled Transmission-Line Directional Couplers," IEEE Transactions on Microwave Theory and Techniques, May 1964, pp. 275-274.
    
    
  15. Maloratsky, L.G., "Couplers Shrink HF/VHF/UHF Designs," Microwaves & RF, Jun 2000, pp. 93-96.
    
    
  16. Martin, G.H., "Analysis and Design of a CATV Inductive Directional Coupler," Applied Microwave & Wireless, May/Jun 1997, pp. 70-78.
    
    
  17. McDonald, R.S., "Low Cost, Wideband Dual Directional Coupler," RF Design, May/Jun 1982, pp. 34-36.
    
    
  18. McWhorter, M., "Broadband RF Transformer Directional Couplers," RF Design, Jul 1991, pp. 53-58.
    
    
  19. Nishizuka, N., M. Tahara, and M. Mohermaiti, "Analysis of Small-Sized Winding Type Directional Coupler," 1998 IEMT/IMC Symposium, pp. 278-283.
    
    
  20. Petrovic, B., "A New Type of Microstrip Directional Coupler," Microwave Journal, Apr 1986, pp. 197-201.
    
    
  21. Shifrin, M., C. Lyons, W. Grammer, and P. Katzin, "An Electronic Directional Coupler," Applied Microwave & Wireless, Nov/Dec 1996, pp. 74-80.
    
    
  22. Simons, K.A., "Directional Coupler," US Patent #3,048,798, 7 Aug 1962.
    
    
  23. Singh, H.M. and J. Howard, "Fundamentals of Wideband Stripline Directional Coupler Design," Microwave Journal, Nov 1989, pp. 95-105.
    
    
  24. Szilagyi, T., "Build a Miniature Directional Coupler," Microwaves & RF, Jun 1983, pp. 23-25.
    
    
  25. Sontheimer, C.G., "Broadband Directional Coupler," US Patent #3,426,298, 4 Feb 1969.
    
    
  26. Young, L., "The Analytical Equivalence of TEM-Mode Directional Couplers and Transmission-Line Stepped-Impedance Filters," Proceedings of the IEE, Vol. 110, No. 2, Feb 1963, pp. 275-280.
           If you have any additional references on this
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