The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 11, 2003
Filed:
Sep. 06, 2001
John B. O'Connell, Seattle, WA (US);
The Boeing Company, Chicago, IL (US);
Abstract
An apparatus for forming a quarter wave step between a waveguide of a radiating element under test and a waveguide associated with test equipment being used to test the radiating element. The apparatus includes a housing including a first bore, a second bore and a third bore, with the second bore forming a quarter wave step between the first and third bores. A pair of circuit boards each including a ring resonator are disposed at the transition areas between the first and second bores and the second and third bores. The ring resonators cancel the reactive component that would otherwise be introduced into the propagating wave as it travels through the quarter wave step portion of the apparatus. The apparatus is relatively short in length and easily implemented in a test environment to test various microwave components.