Coaxial End-Launched and Microstrip to Partial $H$-Plane Waveguide Transitions

Conventional rectangular waveguides are commonly used for high power and other microwave and millimeter-wave applications. Their use at lower frequencies has been limited by their bulky nature. A new type of compact waveguide called a partial H-plane waveguide has previously been proposed that has only one quarter of the cross-sectional area of a conventional waveguide. However, only limited information relating to the feeding of such waveguides is available. This paper presents two types of transitions to partial H-plane waveguides from the coaxial and microstrip transmission mediums. Additionally, in the coaxial case, the transition is end-launched to offer collinear properties. The development of both transitions is discussed and optimized designs presented with simulated and measured results over H-band (3.95-5.85 GHz).

[1]  D. Sudakin,et al.  Appendix A , 2007, Journal of agromedicine.

[2]  S-Parameters for Three and Four Cascaded Two-Ports , 2004, IEEE SoutheastCon, 2004. Proceedings..

[3]  Jeong-Hae Lee,et al.  Compact Partial$H$-Plane Filters , 2006, IEEE Transactions on Microwave Theory and Techniques.

[4]  Paul Penfield,et al.  De-Embedding and Unterminating , 1974 .

[5]  S. M. Saad.  A more accurate analysis and design of coaxial-to-rectangular waveguide end launcher , 1990 .

[6]  Jeong‐Hae Lee,et al.  Compact Resonant Slot Array Antenna Using Partial H-Plane Waveguide , 2010, IEEE Antennas and Wireless Propagation Letters.

[7]  R. M. Chisholm,et al.  The Characteristic Impedance of Trough and Slab Lines , 1956 .

[8]  W. Shao,et al.  A Novel Waveguide-to-Microstrip Transition for Millimeter-Wave Applications , 2004 .

[9]  Jeong‐Hae Lee,et al.  Partial H-plane filters with partially inserted H-plane metal vane , 2005 .

[10]  L. Q. Bui,et al.  Waveguide-to-microstrip transitions for millimeter-wave applications , 1988, 1988., IEEE MTT-S International Microwave Symposium Digest.

[11]  D. A. Frickey.  Conversions between S, Z, Y, H, ABCD, and T parameters which are valid for complex source and load impedances , 1994 .

[12]  Kevin Hugh Kloke.  End-launched coaxial and microstrip to partial H-plane waveguide adapters , 2015 .

[13]  B. N. Das,et al.  Coaxial-to-waveguide transition (end-launcher type) , 1976 .

[15]  Jeong-Hae Lee,et al.  A partial H‐plane waveguide as a new type of compact waveguide , 2004 .

[16]  Marco Guglielmi,et al.  CAD OF COAXIALLY END-FED WAVEGUIDE PHASED-ARRAY ANTENNAS , 2002 .