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:
Nov. 14, 2017
Filed:
Feb. 25, 2015
Fujitsu Limited, Kawasaki-shi, Kanagawa, JP;
Hiroshi Matsumura, Isehara, JP;
FUJITSU LIMITED, Kawasaki, JP;
Abstract
A phased-array transmitter includes a first PLL for transmission, a control circuit, a plurality of transmission units, a delay circuit, and a second PLL for self-test. The first PLL is configured to generate a reference transmission signal, and the control circuit is configured to control the first PLL. The transmission units are configured to receive the reference transmission signal, and perform amplification and phase control to output unit transmission waves, respectively. The delay circuit is configured to delay a signal based on the reference transmission signal, and the second PLL is configured to receive an output signal of the delay circuit, and generate a self-test signal for performing self-test.