Title:
【発明の名称】干渉する受信機イミュニティを増大させる方法および装置
Document Type and Number:
Japanese Patent JP2001505026
Kind Code:
A
Abstract:
A method for adjusting the gain of a receive circuit, thereby improving a receiver's immunity to interference. The circuit has an LNA which amplifies the received signal (1702). The receive signal power is controlled by enabling or disabling the LNA in response to the measured received signal power (1704). The received power level is periodically compared to a threshold (1704). When the received power level is greater than the threshold, the LNA is disabled (1706). The LNA is re-enabled when the received power level is less than the threshold (1708), and there are no significant intermodulation components detected (1710). The intermodulation components are detected by briefly enabling the LNA and detecting the resultant change in the measured signal power (1710). If the detected change is more than a predetermined amount, then there are significant intermodulation components present, and the LNA is not re-enabled (1706). Otherwise, there are not significant intermodulation components present, and the LNA is re-enabled (1702).
Inventors:
Hutchison, James A the Force
Wick, chris pee
Wick, chris pee
Application Number:
JP54859698A
Publication Date:
April 10, 2001
Filing Date:
September 30, 1997
Export Citation:
Assignee:
QUALCOMM INCORPORATED
International Classes:
H03G3/20; H04B7/005; H04B1/00; H04B1/10; H04B1/16; H04B15/00; H04B; (IPC1-7): H04B7/005; H04B1/10
Attorney, Agent or Firm:
Takehiko Suzue (4 outside)