Prematched power resistance in lange couplers and other circuits

Patent metadata

Field	Value
Publication number	US-11322815-B2
Application number	US-202016855317-A
Country	US
Kind code	B2
Filing date	Apr 22, 2020
Priority date	Apr 22, 2020
Publication date	May 3, 2022
Grant date	May 3, 2022

Abstract

Disclosed are various embodiments for a pre-matched power resistance system including a pre-matching network for use with a passive electrical device, such as a Lange coupler or a Wilkinson power splitter, where the system provides a predetermined input impedance across a predetermined target bandwidth. The pre-matched power resistance system network further includes an on-chip thin film resistor disposed on a substrate comprising a plurality of coplanar sub-resistors electrically isolated from one another and a manifold portion comprising a plurality of manifold traces in a tiered arrangement terminating in an electrical connection to a respective one of the coplanar sub-resistors.

First claim

Therefore, the following is claimed:

1. A system, comprising:
a passive electrical device; and
a pre-matched power resistance system electrically connected to the passive electrical device, the pre-matched power resistance system providing the passive electrical device with a predetermined input impedance across a predetermined bandwidth, the pre-matched power resistance system comprising:
a pre-matching network portion;
a resistor disposed on a substrate comprising a plurality of sub-resistors; and
a manifold portion comprising a plurality of manifold traces in a tiered arrangement, each of the plurality of sub-resistors being coupled to a respective one of the plurality of manifold traces.

2. The system of claim 1 , wherein:
the passive electrical device is a Lange coupler comprising a plurality of ports, one of the ports being an isolated port; and
the pre-matched power resistance system is coupled to the isolated port of the Lange coupler, the pre-matched power resistance system providing a predetermined input impedance across the predetermined bandwidth.

3. The system of claim 2 , wherein the predetermined input impedance is 50Ω to 100Ω and the predetermined bandwidth is 9 GHz to 12 GHz.

4. The system of claim 1 , wherein the resistor comprises an on-chip thin film resistor disposed on the substrate, and the plurality of sub-resistors comprise eight sub-resistors.

5. The system of claim 1 , wherein individual ones of the plurality of sub-resistors are rectangular-shaped and are positioned parallel to one another.

6. The system of claim 1 , wherein the tiered arrangement comprises:
a first tier comprising a first number of the plurality of manifold traces coupled to the plurality of sub-resistors;
a second tier branching from the first tier, the second tier comprising a second number of the plurality of manifold traces; and
a third tier branching from the second tier and coupled to a feed line of the pre-matching network portion, the third tier comprising a third number of the plurality of manifold traces.

7. The system of claim 6 , wherein:
the first number of the plurality of manifold traces comprises a first, second, third, fourth, fifth, sixth, seventh, and eighth manifold trace terminating in a coupling with a first, second, third, fourth, fifth, sixth, seventh, and eighth sub-resistor of the plurality of sub-resistors, respectively;
the second number of the manifold traces comprises:
a ninth manifold trace having a first end coupled with the first and second manifold traces and a second end coupled with the third and fourth manifold traces; and
a tenth manifold trace having a first end coupled with the fifth and sixth manifold traces and a second end coupled with the seventh and eighth manifold traces; and

the third number of the manifold traces comprises an eleventh manifold trace having a first end coupled with the ninth manifold trace and a second end coupled with the tenth manifold trace, wherein an end of the feed line is coupled the eleventh manifold trace.

8. The system of claim 6 , wherein the pre-matching network portion comprises:
the feed line, wherein the feed line impedance transforms the resistor to a predetermined impedance across the predetermined bandwidth; and
a plurality of shunt capacitors coupled to the feed line.

9. The system of claim 1 , wherein:
the passive electrical device is a Wilkinson power splitter comprising a predetermined number of segments;
the pre-matched power resistance system is one of a plurality of pre-matched power resistance systems;
a first end of a first transmission line of the Wilkinson power splitter is coupled to a first one of the plurality of pre-matched power resistance systems; and
a second end of the first transmission line of the Wilkinson power splitter is coupled to a second one of the plurality of pre-matched power resistance systems.

10. The system of claim 9 , wherein:
the Wilkinson power splitter is a two-segment Wilkinson power splitter;
a first end of a second transmission line of the two-segment Wilkinson power splitter is coupled to a third one of the plurality of pre-matched power resistance systems; and
a second end of the second transmission line of the two-segment Wilkinson power splitter is coupled to a fourth one of the plurality of pre-matched power resistance systems.

11. A method for pre-matched power resistance, comprising:
providing a pre-matched power resistance system, the pre-matched power resistance system providing a predetermined input impedance across a predetermined bandwidth, the pre-matched power resistance system comprising:
a pre-matching network portion;
a resistor disposed on a substrate comprising a plurality of sub-resistors; and
a manifold portion comprising a plurality of manifold traces in a tiered arrangement, each of the plurality of sub-resistors being coupled to a respective one of the plurality of manifold traces; and

coupling the pre-matching network portion to a passive electrical device.

12. The method of claim 11 , further comprising:
coupling the pre-matched power resistance system to an isolated port of a Lange coupler, wherein the pre-matched power resistance system provides a predetermined input impedance across a predetermined bandwidth.

13. A pre-matched power resistance system that provides a predetermined input impedance, comprising:
a pre-matching network portion;
a resistor disposed on a substrate comprising a plurality of sub-resistors; and
a manifold portion comprising a plurality of manifold traces in a tiered arrangement, each of the plurality of sub-resistors being coupled to a respective one of the plurality of manifold traces.

14. The pre-matched power resistance system of claim 13 , wherein:
the pre-matched power resistance system is coupled to an isolated port of a Lange coupler; and
the pre-matched power resistance system provides a predetermined input impedance across a predetermined bandwidth.

15. The pre-matched power resistance system of claim 13 , wherein the resistor comprises eight sub-resistors.

16. The pre-matched power resistance system of claim 13 , wherein individual ones of the plurality of sub-resistors are rectangular-shaped and are positioned parallel to one another.

17. The pre-matched power resistance system of claim 13 , wherein the tiered arrangement comprises:
a first tier comprising a first number of the plurality of manifold traces coupled to the plurality of sub-resistors;
a second tier branching from the first tier, the second tier comprising a second number of the plurality of manifold traces; and
a third tier branching from the second tier and coupled to a feed line of the pre-matching network portion, the third tier comprising a third number of the plurality of manifold traces.

18. The system of claim 17 , wherein:
the first number of the plurality of manifold traces comprises a first, second, third, fourth, fifth, sixth, seventh, and eighth manifold trace coupled terminating in a coupling with a first, second, third, fourth, fifth, sixth, seventh, and eighth sub-resistor of the plurality of sub-resistors, respectively;
the second number of the manifold traces comprises:
a ninth manifold trace having a first end coupled with the first and second manifold traces and a second coupled with the third and fourth manifold traces; and
a tenth manifold trace having a first end coupled with the fifth and sixth manifold traces and a second end coupled with the seventh and eighth manifold traces; and

the third number of the plurality of ma

Assignees

• Macom Tech Solutions Holdings Inc

Inventors

• Winslow Thomas

Classifications

• H01P5/18

  consisting of two coupled guides, e.g. directional couplers · CPC title

• H01P1/26 Primary

  Dissipative terminations · CPC title

• H01P1/268 Primary

  Strip line terminations (H01P1/262 takes precedence) · CPC title

• H01P5/16

  Conjugate devices, i.e. devices having at least one port decoupled from one other port · CPC title