US 12,476,857 B1
Digital aided clipping methods and devices for digital power amplifier
Surendra Raju Meesaraganda, Surry Hills (AU)
Assigned to Morse Micro Pty. Ltd., Surry Hills (AU)
Filed by Morse Micro Pty. Ltd., Surry Hills (AU)
Filed on Jul. 16, 2024, as Appl. No. 18/774,825.
Int. Cl. H04L 27/26 (2006.01)
CPC H04L 27/2623 (2013.01) 14 Claims
OG exemplary drawing
 
1. A digital clipping method for adaptive clipping input of a Digital Power Amplifier (DPA) in a wireless communication device, the method comprising:
receiving an In-phase (I) component and a Quadrature-phase (Q) component of a baseband sample, wherein the I and Q components are represented by digital codes;
determining whether the baseband sample satisfies a clipping condition, wherein the clipping condition is satisfied when a sum of absolute values of the I and Q components is greater than a predefined threshold value, and wherein the predefined threshold value is determined depending on a number of bits of the digital code for representing the I or Q component of the baseband sample;
upon the baseband sample satisfies the clipping condition, clipping the baseband sample and thereby a sum of absolute values of the I and Q components of the clipped baseband sample is less than or equal to the predefined threshold value; and
driving the DPA according to the baseband sample to generate a Radio Frequency (RF) output for wireless transmission.