Title:
METHOD AND DEVICE FOR CONTROLLING PHASE MODULATOR, CANCELLATION CIRCUIT, AND FEEDFORWARD POWER AMPLIFIER
Document Type and Number:
WIPO Patent Application WO/2020/133459
Kind Code:
A1
Abstract:
Disclosed are a method and device for controlling a phase modulator, a cancellation circuit, and a feedforward power amplifier. The method comprises: acquiring a current cancellation coefficient of a cancellation circuit; determining a traversal step length matching the current cancellation coefficient; acquiring multiple sets of traversal controls with which a cancellation coefficient of the cancellation circuit undergoes different variations and the degree of variation of the cancellation coefficient is no greater than the traversal step length; respectively utilizing the multiple sets of traversal controls to control a phase modulator to perform amplitude modulation and/or phase modulation with respect to an input signal to acquire multiple corresponding traversal cancellation coefficients; selecting the smallest traversal cancellation coefficient of the multiple traversal cancellation coefficients and utilizing the traversal control corresponding to the smallest traversal cancellation coefficient to control the phase modulator; and repeating the above steps until the current cancellation coefficient of the cancellation circuit is less than a preset threshold. The described solution implements the convergence of the cancellation coefficient of the cancellation circuit.
More Like This:
Inventors:
FENG ZHICHENG (CN)
YU QIJIN (CN)
YU QIJIN (CN)
Application Number:
PCT/CN2018/125743
Publication Date:
July 02, 2020
Filing Date:
December 29, 2018
Export Citation:
Assignee:
HEBI TIANHAI ELECTRONIC INFORMATION SYSTEM CO LTD (CN)
International Classes:
H03F1/32
Foreign References:
| CN207652392U | 2018-07-24 | |||
| CN1790925A | 2006-06-21 | |||
| CN1336722A | 2002-02-20 | |||
| CN103684306A | 2014-03-26 | |||
| US20040041629A1 | 2004-03-04 |
Attorney, Agent or Firm:
CHINA WISPRO INTELLECTUAL PROPERTY LLP. (CN)
Download PDF:
Previous Patent: BIDIRECTIONAL SELF-LOCKING DEVICE AND ANTENNA LIFTING ROD
Next Patent: OXYGEN PRODUCTION SYSTEM AND METHOD
Next Patent: OXYGEN PRODUCTION SYSTEM AND METHOD