Title:
FILTER SELECTION TECHNIQUE FOR ISOLATING RECEIVER FROM TRANSMIT SIGNAL IN WIRELESS COMMUNICATION DEVICES
Document Type and Number:
WIPO Patent Application WO/2022/011529
Kind Code:
A1
Abstract:
In one implementation, a wireless communication device includes a first transceiver configured to generate a transmit signal and a band pass filter (BPF) select circuit configured to filter the transmit signal by a one of a first BPF with a relatively high-frequency passband or a second BPF with a relatively low-frequency passband. The wireless communication device includes a second transceiver configured to receive a received signal filtered by the other one of the first or second BPF. Having the transmit and received signals filtered by two different passband filters improves the isolation between the transmitter and receiver. Another implementation configures the first transceiver to include its own set of first and second BPFs, and the second transceiver to also include its own first and second BPFs.
More Like This:
Inventors:
WANG SHAOFENG (US)
YANG RONGLIANG (US)
PATNAIK DEVDUTT (US)
TRIPATHI ROHIT (US)
NGAI FRANCIS (US)
YANG RONGLIANG (US)
PATNAIK DEVDUTT (US)
TRIPATHI ROHIT (US)
NGAI FRANCIS (US)
Application Number:
PCT/CN2020/101787
Publication Date:
January 20, 2022
Filing Date:
July 14, 2020
Export Citation:
Assignee:
QUALCOMM INC (US)
WANG SHAOFENG (CN)
YANG RONGLIANG (CN)
PATNAIK DEVDUTT (US)
TRIPATHI ROHIT (US)
NGAI FRANCIS (US)
WANG SHAOFENG (CN)
YANG RONGLIANG (CN)
PATNAIK DEVDUTT (US)
TRIPATHI ROHIT (US)
NGAI FRANCIS (US)
International Classes:
H04B1/10
Domestic Patent References:
| WO2016164183A1 | 2016-10-13 |
Foreign References:
| US20190306805A1 | 2019-10-03 | |||
| CN105933911A | 2016-09-07 | |||
| CN105429649A | 2016-03-23 |
Other References:
See also references of EP 4183051A4
Attorney, Agent or Firm:
KING & WOOD MALLESONS (CN)
Download PDF: