US 11,750,167 B2
Apparatus for radio-frequency matching networks and associated methods
Attila Zolomy, Budapest (HU); and Christopher L. McCrank, Austin, TX (US)
Assigned to Silicon Laboratories Inc., Austin, TX (US)
Filed by Silicon Laboratories Inc., Austin, TX (US)
Filed on Nov. 27, 2017, as Appl. No. 15/823,319.
Prior Publication US 2019/0165754 A1, May 30, 2019
Int. Cl. H03H 7/40 (2006.01); H04B 1/18 (2006.01); H03H 7/38 (2006.01); H04B 1/00 (2006.01); H03F 3/19 (2006.01); H03F 3/24 (2006.01); H03F 1/56 (2006.01); H03F 3/45 (2006.01)
CPC H03H 7/40 (2013.01) [H03F 1/565 (2013.01); H03F 3/19 (2013.01); H03F 3/245 (2013.01); H03F 3/45475 (2013.01); H03H 7/38 (2013.01); H04B 1/18 (2013.01); H03F 2200/294 (2013.01); H03F 2200/451 (2013.01); H03F 2203/45731 (2013.01); H03H 2007/386 (2013.01); H04B 1/0092 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A radio-frequency (RF) apparatus, comprising:
a wideband receive (RX) impedance matching circuit to provide a received differential RF signal to RF receive circuitry, the wideband RX impedance matching circuit having a relative bandwidth of 10% to 20%, wherein the wideband RX impedance matching circuit is derived from first and second single-ended matching circuits, the wideband RX impedance matching circuit comprising first and second inductors to receive the differential RF signal, and a third inductor coupled across an input of the RF receive circuitry to substitute for a capacitor having a negative capacitance value.