US 12,451,580 B2 · Selectively coupled power splitter

Abstract

Methods and devices for enhancing performance of a power splitter are presented. According to one aspect, the power splitter is realized via lumped elements that include inductively coupled coils. Values of the lumped elements are based on an equivalent circuit of the power splitter that includes a star topology provided by a mutual inductance connected to a first port of the power splitter and respective inductances of the inductively coupled coils modified by the mutual inductance connected between the mutual inductance and respective second and third ports of the power splitter. A coupling factor of the inductively coupled coils has a magnitude that is in a range from 0.15 to 0.45. The coupling factor is negative. Respective capacitors are connected to the ports of the power splitter. The respective capacitors include switchable capacitors.

Claims26

Dependent claims

A power splitter, comprising:

a first LC branch connected between a first port and a second port;
a second LC branch connected between the first port and a third port;
a termination resistor connected between the second port and the third port;
a first port capacitor coupled between a reference ground and the first port;
and
a second port capacitor in series connection with a third port capacitor, the second port capacitor coupled to the second port and the third port capacitor coupled to the third port,
wherein the first and the second LC branches comprise respective first and second inductors, and
wherein the first inductor and the second inductor are inductively coupled according to a predefined nonzero coupling factor.

5 more elements

Dependencies are inferred from the claim text.

Selectively coupled power splitter

Life of this patent

Selectively coupled power splitter

Life of this patent

Abstract

Claims26