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. 22, 2005
Filed:
Jul. 24, 2003
Kazunori Yamanaka, Kawasaki, JP;
Isao Nakazawa, Kawasaki, JP;
Masafumi Shigaki, Kawasaki, JP;
Manabu Kai, Kawasaki, JP;
Kazunori Yamanaka, Kawasaki, JP;
Isao Nakazawa, Kawasaki, JP;
Masafumi Shigaki, Kawasaki, JP;
Manabu Kai, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A monitoring system for high-frequency circuits which minimizes the insertion loss of additional monitoring circuits while requiring only a small space. An input coupler is placed at the input of a high-frequency circuit whose frequency response is to be monitored. The input coupler has a space where a given high-frequency probing signal can propagate, and it combines this propagating signal with a given electrical input signal. The combined signal is processed by the high-frequency circuit, and the resulting signal is supplied to an output coupler. The output coupler has a space for propagation of a high-frequency probing signal component contained in the received combined signal. The output coupler extracts this propagating signal component for the purpose of monitoring.