US 11,757,546 B2
Communication device reception sensitivity measurement method and communication device noise control effect evaluation method using the same
Akiko Shimomura, Nagaokakyo (JP); Kenichi Ito, Nagaokakyo (JP); and Yu Ishiwata, Nagaokakyo (JP)
Assigned to Murata Manufacturing Co., Ltd., Kyoto-fu (JP)
Filed by Murata Manufacturing Co., Ltd., Kyoto-fu (JP)
Filed on Aug. 25, 2021, as Appl. No. 17/411,996.
Application 17/411,996 is a continuation of application No. PCT/JP2020/002465, filed on Jan. 24, 2020.
Claims priority of application No. 2019-035308 (JP), filed on Feb. 28, 2019.
Prior Publication US 2021/0384996 A1, Dec. 9, 2021
Int. Cl. H04B 17/345 (2015.01); H04B 17/10 (2015.01); H04B 17/15 (2015.01); G01R 29/08 (2006.01)
CPC H04B 17/345 (2015.01) [G01R 29/0821 (2013.01); H04B 17/102 (2015.01); H04B 17/15 (2015.01)] 20 Claims
OG exemplary drawing
 
1. A communication device reception sensitivity measurement method of measuring reception sensitivity of a communication device, comprising:
placing a first communication device and a second communication device close to each other in a nonreflective environment in which no radio wave is reflected, the first communication device having an antenna terminal connected to an attached antenna and being a measurement target of reception sensitivity, and the second communication device having an antenna terminal connected to a signal line instead of an attached antenna and having the same configuration as the first communication device;
wirelessly transmitting a test signal from a pseudo communication station to the attached antenna of the first communication device through a communication antenna placed at a predetermined distance from the first communication device in the environment and transmitting the test signal from a pseudo communication station to the second communication device through the signal line;
creating noise interference by operating the second communication device to cause the second communication device to generate noise while the test signal is wirelessly transmitted to the attached antenna of the first communication device and making the generated noise interfere with the attached antenna of the first communication device;
wirelessly transmitting a return signal from the first communication device to the pseudo communication station through the attached antenna and the communication antenna in response to the test signal; and
measuring reception sensitivity of the first communication device based on the return signal.