Title:
RECEIVING DEVICE, AND COMMUNICATION DEVICE EQUIPPED WITH SAME
Document Type and Number:
WIPO Patent Application WO/2023/127519
Kind Code:
A1
Abstract:
A receiving device (100) processes a received signal including a signal fC1 and a signal fC2 having mutually different frequency bands. The receiving device (100) comprises mixers (120, 140), and an AD converter (160). The mixer (120) uses a local frequency fLO1 between the signal fC1 and the signal fC2 to down-convert the received signal. The mixer (140) uses a local frequency fLO2 to further down-convert the signal generated by the mixer (120). The AD converter (160) converts the signal generated by the mixer (140) into a digital signal. The local frequency fLO1 is set to a frequency that is offset by a predetermined amount from an intermediate frequency between the signal fC1 and the signal fC2.
More Like This:
| JPS5826699 | [Title of the Invention] Tuner |
| JPH09214385 | METHOD AND DEVICE FOR PROCESSING SIGNAL |
| JP2005536080 | Image removal secondary filter |
Inventors:
OHIRA HIDEFUMI (JP)
HASEGAWA YOSHIAKI (JP)
HASEGAWA YOSHIAKI (JP)
Application Number:
PCT/JP2022/046176
Publication Date:
July 06, 2023
Filing Date:
December 15, 2022
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H03D7/18; H04B1/26; H04B1/16
Foreign References:
| US20040259518A1 | 2004-12-23 | |||
| JP2012028918A | 2012-02-09 |
Other References:
RF WORLD: "RF World", vol. 8, 1 December 2009, CQ PUBLISHING CO., LTD., ISBN: 978-4-7898-4893-0, article HARADA, HIROSHI.: "Next-Generation Wireless Technologies for Solving Pressing Frequency Resource Shortages: Objectives for Cognitive Radio and Technologies Therefor", pages: 73 - 88, XP009547563
HARUOKAI M., UTSUROGI Y., MATSUOKA T., TANIGUCHI K.: "A dual-band image-reject mixer for GPS with 64dB image rejection", WIRELESS COMMUNICATION TECHNOLOGY, 2003. IEEE TOPICAL CONFERENCE ON HONOLULU, HI, USA OCT. 15-17, 2003, PISCATAWAY, NJ, USA,IEEE, 15 October 2003 (2003-10-15) - 17 October 2003 (2003-10-17), pages 168 - 169, XP010716987, ISBN: 978-0-7803-8196-4, DOI: 10.1109/WCT.2003.1321472
HARUOKAI M., UTSUROGI Y., MATSUOKA T., TANIGUCHI K.: "A dual-band image-reject mixer for GPS with 64dB image rejection", WIRELESS COMMUNICATION TECHNOLOGY, 2003. IEEE TOPICAL CONFERENCE ON HONOLULU, HI, USA OCT. 15-17, 2003, PISCATAWAY, NJ, USA,IEEE, 15 October 2003 (2003-10-15) - 17 October 2003 (2003-10-17), pages 168 - 169, XP010716987, ISBN: 978-0-7803-8196-4, DOI: 10.1109/WCT.2003.1321472
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
Download PDF: