Title:
Ｉ／Ｑ不整合を補償する発振信号発生器及びそれを含む通信システム
Document Type and Number:
Japanese Patent JP5759693
Kind Code:
B2
Abstract:
An oscillation signal generator for compensating for an in-phase (I)/quadrature-phase (Q) mismatch and a communication system including the same are provided. The oscillation signal generator includes a first latch configured to generate an I oscillation signal, a second latch that is cross-coupled with the first latch and generates a Q oscillation signal, and a phase compensator connected to at least one of the first latch or the second latch. The phase compensator complementarily adjusts bias currents of the first and second I differential transistor pairs of the first latch and/or complementarily adjusts bias currents of the first and second Q differential transistor pairs of the second latch. Accordingly, the I/Q mismatch is compensated for without an additional device, so that the phase match between an I signal and a Q signal is improved in the communication system.
Inventors:
Zhang Zhang Hong
Application Number:
JP2010206739A
Publication Date:
August 05, 2015
Filing Date:
September 15, 2010
Export Citation:
Assignee:
Samsung Electronics Co.,Ltd.
International Classes:
H04B1/30; H04L27/34; H04B1/40
Domestic Patent References:
| JP2008113411A | ||||
| JP2008124647A | ||||
| JP2009050006A | ||||
| JP2006094478A |
Foreign References:
| US6029059 |
Attorney, Agent or Firm:
Makoto Hagiwara