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:
Oct. 22, 1996
Filed:
May. 31, 1995
Yoshihiro Konishi, Sagamihara, JP;
Yoshio Okuma, Tokyo, JP;
Yoshihiko Baba, Ichikawa, JP;
Hideki Fujiwara, Ichikawa, JP;
Uniden Corporation, Chiba, JP;
Abstract
A distributed constant type multiple-line circuit is described which comprises a dielectric block (60) having shield conductors (62,64) on its rear surface and all the peripheral side surfaces, a central conductor (1) extending in the block in the front-to-rear thickness direction at the central portion thereof, a first plurality of conductors (2-5) positioned around and parallel to the central conductor and inductively coupled therewith, and a second plurality of conductors (2'-5') positioned nearby and parallel to the first conductors and inductively coupled therewith, respectively. The length of the central conductor is equal to one quarter of the wavelength of the central frequency (f.sub.1) in a frequency band, and the rear end thereof is isolated with the shield conductor on the rear surface of the block. Each of the lengths of the first conductors is equal to one quarter of the wavelength of a predetermined frequency (f.sub.2 -f.sub.5) in the frequency band, and the rear ends thereof are shorted with the shield conductor on the rear surface of the block. Each of the lengths of the second conductors is equal to that of the corresponding one of said first conductors, and the rear ends thereof are isolated with the shield conductor on the rear surface of the block. An input signal (S.sub.IN) iS input to the front end of the central conductor, and signal components of frequencies (f.sub.2 -f.sub.5) are respectively output through the first conductors from the front ends of the second conductor.