US5111166A
Expired / Lapsed
US
⏱️ 0.0 years remaining
N-way power combiner having N reject loads with a common heat sink
Assignee: Harris Corp
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Filing: 1991-04-11
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Granted: 1992-05-05
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Expires: 2011-04-11
Abstract
Abstract An N-way power combiner includes a common output port and N input ports, each adapted to be connected to an RF input signal source. N load ports are provided with each being adapted to be connected to a reject load. N first transmission lines are provided with each connected at one end to the common output port and each connected at its opposite end to a respective one of the N input ports. N Second transmission lines respectively interconnect each of the input ports with one of the load ports. Also, N third transmission lines are provided and wherein each connects a respective one of the load ports with a common point. N reject loads are provided with each connected to a different one of the N load ports for dissipating power in the event that one or more of the RF input signal sources is deactivated. A common heat sink is coupled to all of the N reject ports with the heat sink being sized and configured to provide a total heat dissipation capability to dissipate more than the maximum amount of heat required to be dissipated by any one of the N reject loads and less than N times that amount.
Inventors
- 👤 Robert J. Plonka
- 👤 Dennis J. Milfs
- 👤 David L. Nickell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:30
CPC Classifications
H; H01; H01P; H01P5/00; H01P5/12
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
232 words
An N-way power combiner comprising: a common output port; N input ports, each adapted to be connected to one of N RF signal sources for receiving an RF input signal which is to be combined with other RF input signals to provide an output RF signal at said output port; N load ports, each adapted to be connected to a reject load for dissipating power in the event that one or more of said RF input signal sources is deactivated; N first transmission lines each connected at one end to said common output port and each connected at its opposite end to a respective one of said N input ports; N second transmission lines respectively interconnecting each of said input ports with one of said load ports; N third transmission lines each connecting a respective one of said load ports with a common point; N reject loads, each connected to a different one of said N load ports for dissipating power in the event that one or more of said RF input signal sources is deactivated; and a common heat sink coupled to all of said N reject loads with said heat sink being sized and configured to provide a total heat dissipation capability to dissipate more than the maximum amount of heat required to be dissipated by any one of said N reject loads and less than N times that amount.
Claim 2
Dependent Claim
232 words
An N-way power combiner comprising: a common output port; N input ports, each adapted to be connected to one of N RF signal sources for receiving an RF input signal which is to be combined with other RF input signals to provide an output RF signal at said output port; N load ports, each adapted to be connected to a reject load for dissipating power in the event that one or more of said RF input signal sources is deactivated; N first transmission lines each connected at one end to said common output port and each connected at its opposite end to a respective one of said N input ports; N second transmission lines respectively interconnecting each of said input ports with one of said load ports; N third transmission lines each connecting a respective one of said load ports with a common point; N reject loads, each connected to a different one of said N load ports for dissipating power in the event that one or more of said RF input signal sources is deactivated; and a common heat sink coupled to all of said N reject loads with said heat sink being sized and configured to provide a total heat dissipation capability to dissipate more than the maximum amount of heat required to be dissipated by any one of said N reject loads and less than N times that amount.
Claim 3
Dependent Claim
14 words
A combiner as set forth in claim 1 wherein N is at least two.
Claim 4
Dependent Claim
14 words
A combiner as set forth in claim 1 wherein N is greater than two.
Claim 5
Dependent Claim
62 words
An N-way power combiner as set forth in claim 1 wherein said heat sink is sized and configured to provide a total heat dissipation capability for total reject load dissipation P d in accordance with the following formula: ##EQU10## where: Pd=total reject load dissipation in watts Pm=RF amplifier output power in watts n=total number of RF amplifiers x=number of RF amplifiers deactivated.
Claim 6
Dependent Claim
14 words
A combiner as set forth in claim 4 wherein N is at least two.
Claim 7
Dependent Claim
14 words
A combiner as set forth in claim 4 wherein N is greater than two.
Claim 8
Dependent Claim
49 words
A combiner as set forth in claim 1 wherein said heat sink is metal and includes a base having a surface carrying said N reject loads and wherein each said reject load includes first and second resistors on said surface with said resistors being electrically connected together in parallel.
Claim 9
Dependent Claim
60 words
A combiner as set forth in claim 7 including an insulator board carried by said heat sink and located intermediate said first and second resistors of each of said N reject loads, said insulator board carrying N sets of metal conductor means for respectively interconnecting the first and second resistors of each of said N reject loads together in parallel.
Claim 10
Dependent Claim
61 words
A combiner as set forth in claim 8 including N interconnecting electrical pins extending from said insulator board with each said pin being electrically connected to one of said N reject loads and extending therefrom to one of said N load ports to thereby electrically interconnect a said reject load on said heat sink with one of said N load ports.
Claim 11
Dependent Claim
14 words
A combiner as set forth in claim 9 wherein N is at least two.
Claim 12
Dependent Claim
14 words
A combiner as set forth in claim 9 wherein N is greater than two.
Claim 13
Dependent Claim
60 words
A combiner as set forth in claim 9 wherein said heat sink is sized and configured to provide a total heat dissipation capability for total reject load dissipation P d in accordance with the following formula: ##EQU11## where: Pd=total reject load dissipation in watts Pm=RF amplifier output power in watts n=total number of RF amplifiers x=number of RF amplifiers deactivated.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-05-05 | 1995-11-04 | 1996-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-05-05 | 1999-11-04 | 2000-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-05-05 | 2003-11-04 | 2004-05-05 | $7700.00 | Window Closed / Lapsed |