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:
May. 18, 1999
Filed:
Oct. 12, 1993
Noriyuki Tanino, Itami, JP;
Yoshinobu Sasaki, Itami, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A method of designing the layout of milliwave and microwave integrated circuits using a computer aided design system includes displaying each of a plurality of kinds of lumped circuit elements and distributed constant transmission lines for an integrated circuit on a cathode ray tube display as respective closed drawing objects, each object having an area and dimension representing electrical data; connecting the drawing objects displayed on the cathode ray tube display by overlapping edges of them with each other to produce a virtual integrated circuit having the circuit construction of the integrated circuit; and performing logical operations on the overlapping drawing objects of the virtual integrated circuit according to a design rule defined in accordance with a production process for producing the integrated circuit to produce at least one mask pattern for manufacturing the integrated circuit.