US 11,683,012 B2
Apparatus for radio-frequency amplifier with improved performance and associated methods
Luigi Panseri, Austin, TX (US); Mustafa H. Koroglu, Austin, TX (US); Praveen Vangala, Austin, TX (US); and John M. Khoury, Austin, TX (US)
Assigned to Silicon Laboratories Inc., Austin, TX (US)
Filed by Silicon Laboratories Inc., Austin, TX (US)
Filed on Jan. 28, 2022, as Appl. No. 17/587,678.
Application 17/587,678 is a continuation of application No. 16/661,174, filed on Oct. 23, 2019, granted, now 11,239,799.
Prior Publication US 2022/0209718 A1, Jun. 30, 2022
Int. Cl. H03F 1/02 (2006.01); H03F 3/24 (2006.01); H04B 1/40 (2015.01); H03F 1/32 (2006.01)
CPC H03F 1/0216 (2013.01) [H03F 1/3205 (2013.01); H03F 3/245 (2013.01); H04B 1/40 (2013.01); H03F 2200/451 (2013.01); H03F 2201/3215 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An apparatus, comprising:
an amplifier;
an intermediate-frequency (IF) path circuit to receive an input signal and provide an output signal to the amplifier, the IF path circuit comprising an intermediate frequency (IF) delay adjust circuit, wherein the output signal is derived from an output signal of the IF delay adjust circuit; and
a bias path circuit coupled to generate a bias signal as a function of a characteristic of the input signal, and to provide the bias signal to the amplifier.