Title:
受信装置及び受信装置の調整方法
Document Type and Number:
Japanese Patent JP6466200
Kind Code:
B2
Abstract:
A reception device receives a radio frequency (RF) signal and obtains a data signal from the RF signal in a desired reception channel. The reception device includes a bandpass filter, and first and second test signals are input to the bandpass filter in the test mode to obtain bandpass-filtered first and second test signals, respectively. Each of frequencies of the first and second test signals is lower and higher than a frequency of the desired reception channel, respectively. The reception device detects lower and higher frequency signal intensities from the bandpass-filtered first and second test signals, respectively, in the test mode, and adjusts a central frequency of the passband of the bandpass filter using a difference between the lower and higher frequency signal intensities so as to reduce a difference between the central frequency of the passband and the frequency of the desired reception channel.
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Inventors:
Seiji Nakanishi
Application Number:
JP2015032915A
Publication Date:
February 06, 2019
Filing Date:
February 23, 2015
Export Citation:
Assignee:
LAPIS Semiconductor Co., Ltd.
International Classes:
H04B1/16; H04B1/26
Domestic Patent References:
| JP2002232251A | ||||
| JP2013102275A | ||||
| JP2013141143A |
Foreign References:
| US8831552 |
Attorney, Agent or Firm:
Motohiko Fujimura
Shinji Takano
Shinji Takano