# US 12,763,450 B2 · Systems for and methods of signal division > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,763,450 B2 - Document ID: US12763450B2 - Status: Granted - Kind: B2 - Application number: 18/494,481 - Filed: 2023-10-25 - Published: 2025-05-01 - Granted: 2026-10-13 - Earliest claimed: 2023-10-25 - Assignees: Avago Technologies International Sales Pte. Limited - Applicants: Avago Technologies International Sales Pte. Limited - Inventors: Seyed Mehrdad Babamir - Web page: https://patentgrep.com/patent/US12763450B2 ## CPC - H01P 5/16: Conjugate devices, i.e. devices having at least one port decoupled from one other port - H04B 1/40: Circuits - H01P: WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE (operating at optical frequencies G02B) - H04B: TRANSMISSION ## Abstract Wide-band output isolation is provided. A device includes a first output for a first radio frequency (RF) signal. A device includes a second output for a second RF signal. The device includes a first transistor having a first source/drain. The device includes a second transistor having a first source/drain, wherein the first source/drain of the first transistor is coupled to the first source/drain of the second transistor and wherein the first and second transistors are disposed between the first output and the second output. ## Claims ### Claim 1 A power divider device, comprising: a first node configured to receive a first signal; a second node configured to provide a second signal; a third node configured to provide a third signal; an inductive element coupled between the first node and a power or ground node; a capacitive element coupled between the first node and a fourth node; a first T network coupled between the fourth node and the second node; and a second T network coupled between the third node and the fourth node, wherein the first T network comprises a first capacitor having a capacitance related to a power division ratio between the first node and the second node and a first capacitance value, and the second T network comprises a second capacitor having a capacitance related to a power division ratio between the first node and the third node and the first capacitance value, wherein the first T network comprises a first inductor having an inductance related to the power division ratio between the first node and the second node and the second T network comprises a second inductor having an inductance related to the power division ratio between the first node and the third node. ### Claim 2 (depends on 1) The power divider device of claim 1, wherein the first T network comprises a third inductor having an inductance related to the power division ratio between the first node and the second node and the second T network comprises a fourth inductor having an inductance related to the power division ratio between the first node and the third node. ### Claim 3 (depends on 1) The power divider device of claim 1, wherein the first T network comprises a third capacitor having capacitance related to the power division ratio between the first node and the second node and the second T network comprises a fourth capacitor having a capacitance related to the power division ratio between the first node and the third node. ### Claim 4 (depends on 1) The power divider device of claim 1, wherein the first inductor has an inductance of L2/|S21|2 where L2 is an inductance value and |S21|2 is a square of the power division ratio between the first node and the second node. ### Claim 5 A power divider device, comprising: a first node configured to receive a first signal; a second node configured to provide a second signal; a third node configured to provide a third signal; an inductive element coupled between the first node and a power or ground node; a capacitive element coupled between the first node and a fourth node; a first T network coupled between the fourth node and the second node; and a second T network coupled between the third node and the fourth node, wherein the first T network comprises a first capacitor having a capacitance related to a power division ratio between the first node and the second node and a first capacitance value, and the second T network comprises a second capacitor having a capacitance related to a power division ratio between the first node and the third node and the first capacitance value, wherein the first T network comprises a first inductor having an inductance related to the power division ratio between the first node and the second node and the second T network comprises a second inductor having an inductance related to the power division ratio between the first node and the third node, wherein the first T network comprises a third inductor having an inductance related to the power division ratio between the first node and the second node and the second T network comprises a fourth inductor having an inductance related to the power division ratio between the first node and the third node, and wherein the first T network comprises a third capacitor having capacitance related to the power division ratio between the first node and the second node and the second T network comprises a fourth capacitor having an capacitance related to the power division ratio between the first node and the third node. ### Claim 6 A power divider device, comprising: a first node configured to receive a first signal; a second node configured to provide a second signal; a third node configured to provide a third signal; an inductive element coupled between the first node and a power or ground node; a capacitive element coupled between the first node and a fourth node; a first T network coupled between the fourth node and the second node; a second T network coupled between the third node and the fourth node, wherein the first T network comprises a first capacitor having a capacitance related to a power division ratio between the first node and the second node and a first capacitance value, and the second T network comprises a second capacitor having a capacitance related to a power division ratio between the first node and the third node and the first capacitance value; a fifth node configured to provide a fourth signal; and a third T network coupled between the fifth node and the fourth node, wherein the third T network comprises a third capacitor having a capacitance related to a power division ratio between the first node and the fifth node. ### Claim 7 A power divider device, comprising: a first node configured to receive a first signal; a second node configured to provide a second signal; a third node configured to provide a third signal; an inductive element coupled between the first node and a power or ground node; a capacitive element coupled between the first node and a fourth node; a first T network coupled between the fourth node and the second node; and a second T network coupled between the third node and the fourth node, wherein the first T network comprises a first capacitor having a capacitance related to a power division ratio between the first node and the second node and a first capacitance value, and the second T network comprises a second capacitor having a capacitance related to a power division ratio between the first node and the third node and the first capacitance value, wherein the first capacitor has a capacitance of C2|S21|2 where C2 is the first capacitance value and |S21|2 is a s square of the power division ratio between the first node and the second node. ### Claim 8 A power divider device, comprising: a first node configured to receive a first signal; a second node configured to provide a second signal; a third node configured to provide a third signal; an inductive element coupled between the first node and a power or ground node; a capacitive element coupled between the first node and a fourth node; a first T network coupled between the fourth node and the second node; and a second T network coupled between the third node and the fourth node, wherein the first T network comprises a first capacitor having a capacitance related to a power division ratio between the first node and the second node and a first capacitance value, and the second T network comprises a second capacitor having a capacitance related to a power division ratio between the first node and the third node and the first capacitance value, wherein an amplifier is coupled to the first node. ### Claim 9 A power divider device, comprising: a first node configured to receive a first signal; a second node configured to provide a second signal; a third node configured to provide a third signal; an inductive element coupled between the first node and a power or ground node; a capacitive element coupled between the first node and a fourth node; a first T network coupled between the fourth node and the second node; and a second T network coupled between the third node and the fourth node, wherein the first T network comprises a first capacitor having a capacitance related to a power division ratio between the first node and the second node and a first capacitance value, and the second T network comprises a second capacitor having a capacitance related to a power division ratio between the first node and the third node and the first capacitance value, wherein the capacitive element has a capacitance of 1/(1/C1−1/C2) where C1 and C2 are capacitance values derived from an impedance matching network. ### Claim 10 A power divider device, comprising: a first node configured to receive a first signal; a second node configured to provide a second signal; a third node configured to provide a third signal; an inductive element coupled between the first node and a power or ground node; a capacitive element coupled between the first node and a fourth node; a first network coupled between the fourth node and the second node; and a second network coupled between the third node and the fourth node, wherein the second node is coupled to a first load and the third node is coupled to a second load, wherein the first load has an impedance related to a power division ratio between the first node and the second node and a first impedance value, and the second load has an impedance related to a power division ratio between the first node and the third node and the first impedance value, wherein the first network comprises a first inductor having an inductance related to the power division ratio between the first node and the second node and the second network comprises a second inductor having an inductance related to the power division ratio between the first node and the third node. ### Claim 11 (depends on 10) The power divider device of claim 10, wherein a circuit is provided between the second node and the third node. ### Claim 12 (depends on 11) The power divider device of claim 11, wherein the circuit comprises an inductor and a capacitor. ### Claim 13 (depends on 12) The power divider device of claim 12, wherein the inductor and the capacitor are in series. ### Claim 14 (depends on 10) The power divider device of claim 10, wherein the first network comprises a third inductor having an inductance related to the power division ratio between the first node and the second node and the second network comprises a fourth inductor having an inductance related to the power division ratio between the first node and the third node. ### Claim 15 (depends on 10) The power divider device of claim 10, wherein the first network comprises a first capacitor having a capacitance related to the power division ratio between the first node and the second node and the second network comprises a second capacitor having a capacitance related to the power division ratio between the first node and the third node, and wherein the first network comprises a third capacitor having capacitance related to the power division ratio between the first node and the second node and the second network comprises a fourth capacitor having an capacitance related to the power division ratio between the first node and the third node. ### Claim 16 (depends on 10) The power divider device of claim 10, further comprising: a fifth node configured to provide a third signal; wherein the fifth node is coupled to a third load, wherein the third load has an impedance related to a power division ratio between the first node and the fifth node. ### Claim 17 A method comprising: receiving at a first node a first signal; providing the first signal to a second node, wherein the second node is coupled to a first network, the first network comprising a first capacitor and a first inductor, the first capacitor being between the first node and the second node; providing a second signal from a second network to a third node, the second network being coupled to the first capacitor and the third node, the second network comprising a second capacitor and a third capacitor coupled in series and a second inductor coupled between the second capacitor and the third capacitor; providing a third signal from a third network to a fourth node, the third network being coupled to the first capacitor and the fourth node, the third network comprising a fourth capacitor and a fifth capacitor coupled in series and a third inductor coupled between the fourth capacitor and the fifth capacitor, wherein the second inductor has an inductance related to a power division ratio between the first node and the second node and a first impedance value, and the third inductor has an inductance related to a power division ratio between the first node and the third node and the first impedance value; and providing a fourth signal across a path between the second node and the third node, the path being an inductive and resistive path.