JP2009525695A - 出力インピーダンス不整合の補償を伴うrf電力増幅器コントローラ回路 - Google Patents
出力インピーダンス不整合の補償を伴うrf電力増幅器コントローラ回路 Download PDFInfo
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- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
- H03F1/0205—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers
- H03F1/0211—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers with control of the supply voltage or current
- H03F1/0216—Continuous control
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- H03F1/0227—Continuous control by using a signal derived from the input signal using supply converters
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
- H03F1/0205—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
- H03F1/0205—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers
- H03F1/0211—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers with control of the supply voltage or current
- H03F1/0216—Continuous control
- H03F1/0233—Continuous control by using a signal derived from the output signal, e.g. bootstrapping the voltage supply
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Abstract
Description
但し、Pbatは電池からの電力、IpaはPA104への入力電流、VpaはPA104への入力電源電圧であり、Vccは電池の電源電圧である。さらに、PA104の特定の制御電圧208において、電池(図示せず)等の電源からSMPS404により消費される電力は、下記のように近似できる:
Pbat=Effs*Ipa*Vpa
ここで、Effs=1.1であり、SMPSのスイッチ(図示せず)の効率は、通常は90%を超える。
Claims (25)
- 無線周波数(RF)電力増幅器回路であって、
RF入力信号を受信し、増幅してRF出力信号を生成するように結合された電力増幅器と、
電力増幅器コントローラであって、
該RF入力信号の振幅と該RF出力信号の減衰振幅との間の振幅差を示す振幅補正信号を決定し、該振幅補正信号に基づき、該電力増幅器への電源電圧またはバイアスを調整する振幅制御ループと、
該RF入力信号の位相と該RF出力信号の位相との間の位相差を示す位相誤差信号を決定し、該RF入力信号の該位相を調整して該電力増幅器により生成される位相歪みを低減する位相制御ループと
を含む、電力増幅器コントローラであって、
該電力増幅器と、該電力増幅器の出力に結合されたロードとの間のインピーダンス不整合を検出することに応答して、該振幅制御ループは、該電力増幅器から該ロードに伝達される電力の量を増大させる、RF電力増幅器回路。 - 前記振幅制御ループが、 前記RF出力信号の前記減衰振幅をさらに減少させることによって、前記電力増幅器から前記ロードまで伝達される電力の量を増大させる、請求項1に記載のRF電力増幅器回路。
- 前記振幅制御ループが、 前記電力増幅器内の過度の電力散逸を検出することに応答して、前記ロードに伝達される前記電力の量を減少させる、請求項1に記載のRF電力増幅器回路。
- 前記振幅制御ループが、
前記RF入力信号の前記振幅と、前記RF出力信号の前記振幅とを比較して、前記振幅補正信号を生成する振幅比較器と、
該振幅補正信号を受信するように結合され、該振幅補正信号に基づき、該電力増幅器に提供される調整済み電源電圧を生成する電源と、
を備えている、請求項1に記載のRF電力増幅器回路。 - 前記振幅制御ループが、
前記振幅比較器に結合され、前記入力信号の前記振幅を検出する第一の振幅検出器と、
該振幅比較器に結合され、前記出力信号の前記減衰振幅を検出する第二の振幅検出器と
をさらに備えている、請求項4に記載のRF電力増幅器回路。 - 前記振幅制御ループが、
前記第二の振幅検出器および前記電力増幅器に結合された可変減衰器であって、該可変減衰器は、該電力増幅器の前記出力信号を減衰させ、該減衰出力信号を該第二の振幅検出器に提供する、可変減衰器と、
該可変減衰器に結合されたロード偏差制御回路であって、該ロード偏差制御回路は、該電力増幅器と前記ロードとの間の前記インピーダンス不整合を検出することに応答して、該可変減衰器の利得を調整して、該電力増幅器の該出力信号をさらに減衰させる、ロード偏差制御回路と
をさらに備えている、請求項5に記載のRF電力増幅器回路。 - 前記ロード偏差制御回路は、前記電力増幅器内の過度の電力散逸を検出することに応答して、前記可変減衰器の前記利得を調整して、該電力増幅器の前記出力信号の前記減衰を減少させる、請求項6に記載のRF電力増幅器回路。
- 無線周波数(RF)電力増幅器回路であって、
RF入力信号を受信し、増幅してRF出力信号を生成するように結合された電力増幅器と、
電力増幅器コントローラであって、
該RF入力信号の振幅と該RF出力信号の減衰振幅との間の振幅差を示す振幅補正信号を決定し、該振幅補正信号に基づき、該電力増幅器への電源電圧またはバイアスを調整する振幅制御ループを含む、電力増幅器コントローラと
を備えており、
該電力増幅器と、該電力増幅器の出力に結合されたロードとの間のインピーダンス不整合を検出することに応答して、該振幅制御ループは、該電力増幅器から該ロードに伝達される電力の量を増大させる、RF電力増幅器回路。 - 前記振幅制御ループが、前記RF出力信号の前記減衰振幅をさらに減少させることによって、前記電力増幅器から前記ロードまで伝達される電力の量を増大させる、請求項8に記載のRF電力増幅器回路。
- 前記振幅制御ループが、前記電力増幅器内の過度の電力散逸を検出することに応答して、前記ロードに伝達される前記電力の量を減少させる、請求項8に記載のRF電力増幅器回路。
- 前記振幅制御ループが、
前記RF入力信号の前記振幅と、前記RF出力信号の前記振幅とを比較して、前記振幅補正信号を生成する振幅比較器と、
該振幅補正信号を受信するように結合され、該振幅補正信号に基づき、該電力増幅器に提供される調整済み電源電圧を生成する電源と
を備えている、請求項8に記載のRF電力増幅器回路。 - 前記振幅制御ループが、
前記振幅比較器に結合され、前記入力信号の前記振幅を検出する第一の振幅検出器と、
該振幅比較器に結合され、前記出力信号の前記減衰振幅を検出する第二の振幅検出器と
をさらに備えている、請求項11に記載のRF電力増幅器回路。 - 前記振幅制御ループが、
前記第二の振幅検出器および前記電力増幅器に結合された可変減衰器であって、該可変減衰器は、該電力増幅器の前記出力信号を減衰させ、該減衰出力信号を該第二の振幅検出器に提供する、可変減衰器と、
該可変減衰器に結合されたロード偏差制御回路であって、該ロード偏差制御回路は、該電力増幅器と前記ロードとの間の前記インピーダンス不整合を検出することに応答して、該可変減衰器の利得を調整して、該電力増幅器の該出力信号をさらに減衰させる、ロード偏差制御回路と
をさらに備えている、請求項12に記載のRF電力増幅器回路。 - 前記ロード偏差制御回路は、前記電力増幅器内の過度の電力散逸を検出することに応答して、前記可変減衰器の前記利得を調整して、該電力増幅器の前記出力信号の前記減衰を減少させる、請求項13に記載のRF電力増幅器回路。
- RF入力信号を受信し、増幅してRF出力信号を生成するように結合された電力増幅器を制御する方法であって、該方法は、
該RF入力信号の振幅と該RF出力信号の減衰振幅とを比較して、該RF入力信号の振幅と該RF出力信号の減衰振幅との間の振幅差を示す振幅補正信号を生成するステップと、
該振幅補正信号に基づき、該電力増幅器への電源電圧またはバイアスを調整するステップと、
該電力増幅器と、該電力増幅器の出力に結合されたロードとの間のインピーダンス不整合を検出することに応答して、該電力増幅器から該ロードに伝達される電力の量を増大させるステップと
を包含する、方法。 - 前記電力の量を増大させるステップは、前記電力増幅器と前記ロードとの間のインピーダンス不整合を検出することに応答して、該電力増幅器の前記RF出力信号の前記減衰振幅をさらに減少させるステップを包含する、請求項15に記載の方法。
- 前記電力増幅器の過度の電力散逸を検出することに応答して、前記ロードに伝達される電力の量を減少させるステップをさらに包含する、請求項15に記載の方法。
- 前記ロードに伝達される電力の量を減少させるステップは、前記電力増幅器の過度の電力散逸を検出することに応答して、該電力増幅器の前記出力信号の前記減衰振幅を増大させるステップを包含する、請求項17に記載の方法。
- 無線周波数(RF)電力増幅器回路であって、
RF入力信号を受信し、増幅してRF出力信号を生成するように結合された電力増幅器と、
電力増幅器コントローラであって、
該RF入力信号の振幅と該RF出力信号の減衰振幅との間の振幅差を示す振幅補正信号を決定し、該振幅補正信号に基づき、該電力増幅器への電源電圧またはバイアスを調整する振幅制御ループと、
該RF入力信号の位相と該RF出力信号の位相との間の位相差を示す位相誤差信号を決定し、該RF入力信号の該位相を調整して該電力増幅器により生成される位相歪みを低減する位相制御ループと
を含む、電力増幅器コントローラであって、
該電力増幅器と、該電力増幅器の出力に結合されたロードとの間のインピーダンス不整合を検出することに応答して、該電力増幅器の出力インピーダンスが、該ロードの該インピーダンスにより正確に整合するように調整される、RF電力増幅器回路。 - 前記振幅制御ループが、
前記RF入力信号の前記振幅と、前記RF出力信号の前記振幅とを比較して、前記振幅補正信号を生成する振幅比較器と、
該振幅補正信号を受信するように結合され、該振幅補正信号に基づき、該電力増幅器に提供される調整済み電源電圧を生成する電源と
を備えている、請求項19に記載のRF電力増幅器回路。 - 前記振幅制御ループが、
前記電力増幅器と前記ロードとの間のインピーダンス不整合を検出することに応答して、インピーダンス制御信号を生成するロード偏差制御回路と、
該ロード偏差制御回路に結合され、該インピーダンス制御信号に基づき、該電力増幅器の出力インピーダンスを調整して、前記ロードの前記インピーダンスをより正確に整合させる出力整合補償回路と
をさらに備えている、請求項20に記載のRF電力増幅器回路。 - 無線周波数(RF)電力増幅器回路であって、
RF入力信号を受信し、増幅してRF出力信号を生成するように結合された電力増幅器と、
電力増幅器コントローラであって、
該RF入力信号の振幅と該RF出力信号の減衰振幅との間の振幅差を示す振幅補正信号を決定し、該振幅補正信号に基づき、該電力増幅器への電源電圧またはバイアスを調整する振幅制御ループを含む、電力増幅器コントローラと
を備え、
該電力増幅器と、該電力増幅器の出力に結合されたロードとの間のインピーダンス不整合を検出することに応答して、該電力増幅器の出力インピーダンスが、該ロードの該インピーダンスにより正確に整合するように調整される、RF電力増幅器回路。 - 前記振幅制御ループが、
前記RF入力信号の前記振幅と、前記RF出力信号の前記振幅とを比較して、前記振幅補正信号を生成する振幅比較器と、
該振幅補正信号を受信するように結合され、該振幅補正信号に基づき、該電力増幅器に提供される調整済み電源電圧を生成する電源と
を備えている、請求項22に記載のRF電力増幅器回路。 - 前記振幅制御ループが、
前記電力増幅器と前記ロードとの間のインピーダンス不整合を検出することに応答して、インピーダンス制御信号を生成するロード偏差制御回路と、
該ロード偏差制御回路に結合され、該インピーダンス制御信号に基づき、該電力増幅器の出力インピーダンスを調整して、前記ロードの前記インピーダンスをより正確に整合させる出力整合補償回路と
をさらに備えている、請求項23に記載のRF電力増幅器回路。 - RF入力信号を受信し、増幅してRF出力信号を生成するように結合された電力増幅器を制御する方法であって、該方法は、
該RF入力信号の振幅と該RF出力信号の減衰振幅とを比較して、該RF入力信号の振幅と該RF出力信号の減衰振幅との間の振幅差を示す振幅補正信号を生成するステップと、
該振幅補正信号に基づき、該電力増幅器への電源電圧またはバイアスを調整するステップと、
該電力増幅器と、該電力増幅器の出力に結合されたロードとの間のインピーダンス不整合を検出することに応答して、該電力増幅器の出力インピーダンスを調整して、該ロードのインピーダンスをより正確に整合させるステップと
を包含する、方法。
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US20100301934A1 (en) | 2010-12-02 |
US7761065B2 (en) | 2010-07-20 |
WO2007092244A3 (en) | 2008-04-24 |
JP4849573B2 (ja) | 2012-01-11 |
US7917105B2 (en) | 2011-03-29 |
US20070184793A1 (en) | 2007-08-09 |
WO2007092244A2 (en) | 2007-08-16 |
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