公开(公告)号：US20190238167A1

公开(公告)日：2019-08-01

申请号：US16237740

申请日：2019-01-01

Applicant: MEDIATEK INC.

Inventor： Sheng-Che Tseng ,  Yu-Lin Hsieh ,  Ming-Yu Hsieh ,  Shih-Chieh Yen ,  Jen-Kuei Tsai

IPC: H04B1/04 ,  H04B1/30

CPC classification number: H04B1/0475 ,  H04B1/30 ,  H04B1/525 ,  H04B2001/0491 ,  H04B2001/307 ,  H04W88/06

Abstract: A wireless communication device includes a first wireless communication system and a second wireless communication system. Regarding the first wireless communication system, an up-conversion circuit up-converts a first transmit (TX) signal in a baseband to generate a second TX signal with a first carrier frequency, and a front-end circuit transmits the second TX signal to another wireless communication device. Regarding the second wireless communication system, a first down-conversion circuit down-converts a first receive (RX) signal with a second carrier frequency to generate a second RX signal with a third carrier frequency, and a second down-conversion circuit down-converts the second RX signal with the third carrier frequency to generate a third RX signal in the baseband. The third carrier frequency is different from all fundamental frequencies included in a band combination that is employed at the first wireless communication system and is supported by another wireless communication device.