Title:
TERMINAL DEVICE, TRANSMITTER, BASEBAND CHIP, AND RADIOFREQUENCY SIGNAL GENERATING METHOD
Document Type and Number:
WIPO Patent Application WO/2020/199012
Kind Code:
A1
Abstract:
A terminal device, a transmitter, a baseband chip, and a radiofrequency signal generating method, for reducing the interference of a CIM3 with respect to a protected band without increasing the costs and power consumption of a device for generating a radiofrequency signal. The terminal device comprises an application processor, a baseband processor, a local oscillator, and an upconverter. The application processor is used for triggering the baseband processor to transmit a resource block (RB) signal. The baseband processor is used for determining the offset, Δf, of the center frequency of the RB signal relative to zero point and controlling the local oscillator to adjust the center frequency, flo, of a local oscillator signal generated by the local oscillator to flo + Δf. The local oscillator is used, under the control of the baseband processor, for adjusting the center frequency, flo, to flo + Δf. The upconverter is used for generating a radiofrequency signal, where the radiofrequency signal is produced by the upconverter utilizing the local oscillator signal of which the center frequency is adjusted to perform an up conversion of the RB signal of which the center frequency is zero.
Inventors:
CHANG HSIANG HUI (CN)
Application Number:
PCT/CN2019/080616
Publication Date:
October 08, 2020
Filing Date:
March 29, 2019
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H04B15/00; H04B1/02
Foreign References:
| US20160182097A1 | 2016-06-23 | |||
| CN107005527A | 2017-08-01 | |||
| CN103441733A | 2013-12-11 | |||
| US9086476B1 | 2015-07-21 | |||
| US20140287707A1 | 2014-09-25 |
Attorney, Agent or Firm:
TDIP & PARTNERS (CN)
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