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Surface-mounted millimeter wave signal source with ridged microstrip to waveguide transition

  • US 6,573,803 B1
  • Filed: 10/12/2000
  • Issued: 06/03/2003
  • Est. Priority Date: 10/12/2000
  • Status: Expired due to Term
First Claim
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1. A surface-mounted mm-wave signal source comprising:

  • a conductive metal base;

    a mm-wave signal source disposed over an upper portion of said metal base;

    a first radio frequency transmission line disposed over said upper portion of said metal base and.proximate said signal source, said transmission line carrying a quasi-TEM signal from said mm-wave signal source;

    a first mode transformer at least partially integrated into said upper portion of said metal base to convert said quasi-TEM signal carried by said planar transmission line into a rectangular waveguide mode signal;

    a waveguide well having upper and lower ends disposed within said base for carrying said rectangular waveguide mode signal from said upper portion of said base to a lower portion of said base;

    a second mode transformer at least partially integrated into said lower portion of said base to convert said rectangular waveguide mode signal to a quasi-TEM signal within a second radio frequency transmission line oriented perpendicularly to said waveguide well.

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