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. 16, 1999
Filed:
Nov. 27, 1996
Duk Yong Kim, Hwasung-Kun, KR;
Ik Soo Chang, Seoul, KR;
KMW USA, Inc., Santa Fe Springs, CA (US);
Abstract
An improved Wilkinson-type power divider/combiner possessing switching capabilities for selectively controlling operative modes of its constituent dividing/combining channels is disclosed. The switchable power divider/combiner includes N first switches connecting N input/output transmission lines to a common junction and N second switches connecting N isolation resistors coupled to the N input/output transmission lines to a common node. The operating mode of the power divider/combiner can be controlled by activating each pair of the first and second switches to a closed or open switch position. The impedance values of the dividing/combining channel transmission lines are adjusted to provide the optimal impedance matching in both N-way and (N-1)-way operating modes. The resulting switchable power divider/combiner is capable of providing efficient power combining and distribution in a low-loss, phase-balanced manner in both N-way and (N-1)-1 way modes. When one of the signal-processing channels in the dividing/combining system fails, the power divider/combiner is switched to the (N-1)-way mode to provide continuing operation of the system without any degradation in the signal characteristics.