A method and device for controlling signal transmission power
A power control and signal transmission technology, which is applied in the electronic field, can solve the problems of large instantaneous variation of signal transmission power, lower communication performance, out-of-band spectrum leakage, etc., and achieve the effect of suppressing out-of-band spectrum leakage
Active Publication Date: 2021-05-14
SHENZHEN RENERGY TECH
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[0002] In recent years, a series of research on wireless communication circuits has been carried out at home and abroad, and many fruitful results have been achieved in wireless communication systems, especially the low-power Bluetooth wireless communication standard modulation method GFSK (Gaussian Frequency Shift Keying, Gaussian Frequency Shift Keying ), which has made great breakthroughs. It has good radio frequency performance such as easy implementation, applicable frequency bandwidth, and strong anti-interference ability, but there are also some defects in some aspects, such as the radio frequency power amplifier used in GFSK modulation. Or when it is turned off, the signal transmission power has a large instantaneous change range, which is prone to out-of-band spectrum leakage and reduces the communication performance; in addition, when the RF power amplifier is turned on, it will also cause the voltage-controlled oscillator to generate frequency pull and inrush current
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[0045] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0046] It should be understood that when used in this specification and the appended claims, the terms "comprising" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude one or Presence or addition of multiple other features, integers, steps, operations, elements, components and / or collections thereof.
[0047] It should also be understood that the terminology used ...
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The embodiment of the present invention discloses a signal transmission power control method and device, which relate to the field of electronic technology, wherein the method includes: turning on the radio frequency power amplifier; obtaining the preset first bandgap reference voltage control word and adjusting the first bandgap reference voltage step; according to the first bandgap reference voltage control word and the first bandgap reference voltage adjustment step, upwardly adjust the bandgap reference voltage input by the RF power amplifier to complete the first-level power climbing control; obtain the preset first gain The control word and the first gain adjustment step; according to the first gain control word and the first gain adjustment step, the gain multiple of the radio frequency power amplifier is adjusted upwards to complete the secondary power ramp control. The embodiments of the present invention can realize slow and smooth control of the transmission power when the radio frequency amplifier is turned on or off, and effectively suppress out-of-band spectrum leakage.
Description
technical field [0001] The present invention relates to the field of electronic technology, in particular to a signal transmission power control method and device. Background technique [0002] In recent years, a series of research on wireless communication circuits has been carried out at home and abroad, and many fruitful results have been achieved in wireless communication systems, especially the low-power Bluetooth wireless communication standard modulation method GFSK (Gaussian Frequency Shift Keying, Gaussian Frequency Shift Keying ), which has made great breakthroughs. It has good radio frequency performance such as easy implementation, applicable frequency bandwidth, and strong anti-interference ability, but there are also some defects in some aspects, such as the radio frequency power amplifier used in GFSK modulation. Or when it is turned off, the signal transmission power varies greatly instantaneously, which is prone to out-of-band spectrum leakage, which reduces...
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IPC IPC(8): H03L5/02H03F3/20H03F1/30H04L27/14
CPCH03F1/30H03F3/20H03L5/02H04L27/14
Inventor周晓光陈力丘聪刘凯
OwnerSHENZHEN RENERGY TECH