US 11,716,108 B2
Multi-band equalizers
Henrik Sjöland, Lund (SE); and Mohammed Abdulaziz, Lund (SE)
Assigned to Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Appl. No. 17/608,646
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
PCT Filed May 8, 2019, PCT No. PCT/EP2019/061777
§ 371(c)(1), (2) Date Nov. 3, 2021,
PCT Pub. No. WO2020/224771, PCT Pub. Date Nov. 12, 2020.
Prior Publication US 2022/0231716 A1, Jul. 21, 2022
Int. Cl. H04M 1/00 (2006.01); H04B 1/18 (2006.01); H04B 1/16 (2006.01)
CPC H04B 1/18 (2013.01) [H04B 1/1607 (2013.01); H04B 1/1638 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A multi-band equalizer for adjusting signal strength for a receiver receiving multi-band frequency signals, the multi-band equalizer comprising:
multiple resonators, each resonator having a first, second and third terminal, wherein each resonator comprises:
an inductor connected between the first and second terminals; and
two programmable capacitors connected in series between the first terminal and second terminal, the interconnection of the two programmable capacitors being tapped out and connected to the third terminal; and wherein
the multiple resonators are series connected such that the third terminal of a preceding resonator is connected to the first terminal of a succeeding resonator and, when used in the receiver, the first terminal of the first resonator is connected to a signal node of the receiver and the third terminal of the last resonator is connected to a signal ground, or the first terminal of the first resonator is connected to a signal ground and the third terminal of the last resonator is connected to a signal node of the receiver.