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US7929923B2
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Wide dynamic range out-phasing array transmitter
Assignee: Intel Corp
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Filing: 2008-01-03
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Granted: 2011-04-19
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Expires: 2028-01-03
Abstract
Abstract A novel out-phasing-array transmitter system and method are disclosed. The method is based on decomposing the input signal into an array of signals to drive a general, multiple paths out-phasing-array transmitter. This decomposition is less sensitive to the phase difference between the multiple paths, and extends the dynamic range of the out-phasing-array transmitter system. The wide dynamic range and the multiple transmission paths increase the maximum achievable output power, in accordance with the WiMAX specifications.
Inventors
- 👤 Mostafa Elmala
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:23
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/20; H03F3/24; H03F1/00; H03F1/02; H03F1/0205; H03F1/0294; H03F3/21; H03F3/217; H03F3/60
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
281 words
An out-phasing-array transmitter, comprising: 2 N switching power amplifiers to receive a signal, S(t), the signal being a summation of 2 N constant amplitude signals, S 1 (t), S 2 (t), . . . , S 2 N (t), for integer N, where the constant amplitude signals are defined by the following equations: S 1 ( t ) = 1 2 N r max exp ( j ( ω 0 t + ϕ 1 ( t ) + ϕ 2 ( t ) + … + ϕ N ( t ) ) ) S 2 ( t ) = 1 2 N r max exp ( j ( ω 0 t + ϕ 1 ( t ) + ϕ 2 ( t ) + … - ϕ N ( t ) ) ) ⋯ ⋯ S 2 N ( t ) = 1 2 N r max exp ( j ( ω 0 t - ϕ 1 ( t ) - ϕ 2 ( t ) - … - ϕ N ( t ) ) ) } , where r max is a peak value of an envelope signal, jω 0 t is a carrier frequency, and φ 1 (t), φ 2 (t), . . . , φ N (t) are out-phasing angles; and a table comprising values in degrees to be plugged into the out-phasing angles of the equations for a given input power; wherein a dynamic range greater than 35 dBm is achieved.
Claim 2
Dependent Claim
281 words
An out-phasing-array transmitter, comprising: 2 N switching power amplifiers to receive a signal, S(t), the signal being a summation of 2 N constant amplitude signals, S 1 (t), S 2 (t), . . . , S 2 N (t), for integer N, where the constant amplitude signals are defined by the following equations: S 1 ( t ) = 1 2 N r max exp ( j ( ω 0 t + ϕ 1 ( t ) + ϕ 2 ( t ) + … + ϕ N ( t ) ) ) S 2 ( t ) = 1 2 N r max exp ( j ( ω 0 t + ϕ 1 ( t ) + ϕ 2 ( t ) + … - ϕ N ( t ) ) ) ⋯ ⋯ S 2 N ( t ) = 1 2 N r max exp ( j ( ω 0 t - ϕ 1 ( t ) - ϕ 2 ( t ) - … - ϕ N ( t ) ) ) } , where r max is a peak value of an envelope signal, jω 0 t is a carrier frequency, and φ 1 (t), φ 2 (t), . . . , φ N (t) are out-phasing angles; and a table comprising values in degrees to be plugged into the out-phasing angles of the equations for a given input power; wherein a dynamic range greater than 35 dBm is achieved.
Claim 3
Dependent Claim
44 words
The out-phasing-array transmitter of claim 1 , further comprising: 2 N quarter-wave transmission lines coupled to outputs of the 2 N switching power amplifiers, the transmission lines joining together; wherein the constant amplitude signals are rejoined as the signal once leaving the power amplifiers.
Claim 4
Dependent Claim
19 words
The out-phasing-array transmitter of claim 2 , further comprising: a load, wherein the signal is received into the load.
Claim 5
Dependent Claim
18 words
The out-phasing-array transmitter of claim 1 , wherein N=2 and the dynamic range is close to 60 dBm.
Claim 6
Dependent Claim
18 words
The out-phasing-array transmitter of claim 1 , wherein N=3 and the dynamic range is close to 85 dBm.
Claim 7
Dependent Claim
18 words
The out-phasing-array transmitter of claim 1 , wherein N=4 and the dynamic range is close to 110 dBm.
Claim 8
Dependent Claim
316 words
An out-phasing-array transmitter, comprising: a first switching power amplifier to receive a signal, S 1 (t), the signal being defined according to an equation, S 1 ( t ) = 1 4 r max exp ( j ( ω 0 t + ϕ 1 ( t ) + ϕ 2 ( t ) ) ) , wherein r max is a peak value of an envelope signal, jω 0 t is a carrier frequency, φ 1 (t) is a first out-phasing angle, and φ 2 (t) is a second out-phasing angle; a second switching power amplifier to receive a signal, S 2 (t), the signal being defined according to an equation, S 2 ( t ) = 1 4 r max exp ( j ( ω 0 t + ϕ 1 ( t ) - ϕ 2 ( t ) ) ) ; a third switching power amplifier to receive a signal, S 3 (t), the signal being defined according to an equation, S 3 ( t ) = 1 4 r max exp ( j ( ω 0 t - ϕ 1 ( t ) + ϕ 2 ( t ) ) ) ; a fourth switching power amplifier to receive a signal, S 4 (t), the signal being defined according to an equation, S 4 ( t ) = 1 4 r max exp ( j ( ω 0 t - ϕ 1 ( t ) + ϕ 2 ( t ) ) ) ; and a table comprising values in degrees for the first and second out-phasing angles, φ 1 (t) and φ 2 (t) for a given input power; wherein a dynamic range of up to 60 dBm is achieved.
Claim 9
Dependent Claim
316 words
An out-phasing-array transmitter, comprising: a first switching power amplifier to receive a signal, S 1 (t), the signal being defined according to an equation, S 1 ( t ) = 1 4 r max exp ( j ( ω 0 t + ϕ 1 ( t ) + ϕ 2 ( t ) ) ) , wherein r max is a peak value of an envelope signal, jω 0 t is a carrier frequency, φ 1 (t) is a first out-phasing angle, and φ 2 (t) is a second out-phasing angle; a second switching power amplifier to receive a signal, S 2 (t), the signal being defined according to an equation, S 2 ( t ) = 1 4 r max exp ( j ( ω 0 t + ϕ 1 ( t ) - ϕ 2 ( t ) ) ) ; a third switching power amplifier to receive a signal, S 3 (t), the signal being defined according to an equation, S 3 ( t ) = 1 4 r max exp ( j ( ω 0 t - ϕ 1 ( t ) + ϕ 2 ( t ) ) ) ; a fourth switching power amplifier to receive a signal, S 4 (t), the signal being defined according to an equation, S 4 ( t ) = 1 4 r max exp ( j ( ω 0 t - ϕ 1 ( t ) + ϕ 2 ( t ) ) ) ; and a table comprising values in degrees for the first and second out-phasing angles, φ 1 (t) and φ 2 (t) for a given input power; wherein a dynamic range of up to 60 dBm is achieved.
Claim 10
Dependent Claim
37 words
The out-phasing array transmitter of claim 7 , wherein the first out-phasing angle, φ 1 (t), is 88.36 degrees and the second out-phasing angle, φ 2 (t), is 88 degrees when the input power is −50 dBm.
References Cited (Backward Citations)
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