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:
Jan. 08, 2002
Filed:
Sep. 22, 1999
James Stuart McLean, Austin, TX (US);
Gentry Elizabeth Crook, Austin, TX (US);
TDK RF Solutions, Inc., Austin, TX (US);
Abstract
A transformer for connection between a generator and a load may be formed by connecting n transmission lines together, in series at one end and in parallel at the other end. The transmission lines are configured to each have a characteristic impedance of {square root over (R +L |Z +L (f +L |)}, where f is the frequency at which each transmission line is one quarter of a wavelength long (quarter-wavelength frequency), |Z (f )| is the magnitude of the load impedance at the quarter-wavelength frequency, and R is the generator resistance. The transformer exhibits a frequency-dependent impedance transformation ratio, allowing a more efficient impedance match of a generator to a load having a frequency-dependent impedance, such as an antenna.