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:
Jun. 17, 1997
Hiroki Fujishiro, Tokyo, JP;
Kiyoshi Nagai, Tokyo, JP;
Oki Electric Industry Co., Ltd., Tokyo, JP;
Abstract
A coupling between distributed constant lines which are provided on an individual chip is made so that deterioration in their characteristics may not be caused by an inductance. A first microstrip line 42 and a second microstrip line 44 are provided on an underlayer metal plate 10, separately from each other with a gap domain 60 interposed therebetween. The first microstrip line 42 is composed of a first grounding conductor 12, a first dielectric substrate 14, and a first conductor line 46 which are stacked one after another. The second microstrip line 44 is composed of a second grounding conductor 13, a second dielectric substrate 16, and a second conductor line 48 which are stacked one after another. The first conductor line 46 is provided with a first gap 56 extending in the direction q perpendicular to the arrangement direction p, and the second conductor line 48 is provided with a second gap 58 extending in the direction q perpendicular to the arrangement direction p. When assuming that the wavelength corresponding to the central frequency of a desired frequency band is .lambda., the distance between the first gap 56 and the gap domain 60 along the arrangement direction p and the distance between the second gap 58 and the gap domain 60 along the arrangement direction p are, respectively, set at m .lambda./2 (where m is an integer).