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. 25, 2003
Filed:
Sep. 21, 2001
Applicant:
Inventor:
William W. Oldfield, Redwood City, CA (US);
Assignee:
Anritsu Company, Morgan Hill, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01P 3/08 ;
U.S. Cl.
CPC ...
H01P 3/08 ;
Abstract
A microstrip termination is provided with a thin film resistor connecting a transmission line to a tapered edge ground, enabling high frequency performance, such as for optical modulators. The tapered edge ground is formed with metal deposited on a substrate edge between a top surface of a substrate containing the transmission line with thin film resistor, and a bottom surface with a metal coating forming a ground plane. The tapered edge is cut at an angle in the range of 30 degrees with respect to the top surface. The microstrip termination provides a wider bandwidth of impedance matching than a standard microstrip termination.