JPWO2021061855A5 - Envelope tracking system, mobile device, and method of envelope tracking - Google Patents
Envelope tracking system, mobile device, and method of envelope tracking Download PDFInfo
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- JPWO2021061855A5 JPWO2021061855A5 JP2022518989A JP2022518989A JPWO2021061855A5 JP WO2021061855 A5 JPWO2021061855 A5 JP WO2021061855A5 JP 2022518989 A JP2022518989 A JP 2022518989A JP 2022518989 A JP2022518989 A JP 2022518989A JP WO2021061855 A5 JPWO2021061855 A5 JP WO2021061855A5
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Claims (20)
無線周波数信号を増幅するべく、かつ、電力増幅器供給電圧からの電力を受けるべく、構成される電力増幅器と、
前記無線周波数信号の包絡線に対応する包絡線信号に基づいて電力増幅器供給電圧を生成するべく構成される包絡線追跡器と
を含み、
前記包絡線追跡器は、
複数の調節済み電圧を出力するべく構成されるＤＣ／ＤＣ変換器と、
前記複数の調節済み電圧及び前記包絡線信号に基づいて前記電力増幅器供給電圧を制御するべく構成される変調器と、
前記無線周波数信号の電力レベルに基づいて前記複数の調節済み電圧のうち少なくとも一つの調節済み電圧の電圧レベルを制御するべく構成されるスイッチングポイント適合回路と
を含む、包絡線追跡システム。 An envelope tracking system,
a power amplifier configured to amplify the radio frequency signal and receive power from the power amplifier supply voltage;
an envelope tracker configured to generate a power amplifier supply voltage based on an envelope signal corresponding to an envelope of the radio frequency signal;
The envelope tracker includes:
a DC/DC converter configured to output a plurality of regulated voltages;
a modulator configured to control the power amplifier supply voltage based on the plurality of regulated voltages and the envelope signal;
a switching point adaptation circuit configured to control a voltage level of at least one regulated voltage of the plurality of regulated voltages based on a power level of the radio frequency signal.
前記包絡線追跡器は、前記複数の調節済み電圧を受けて前記２以上の電力増幅器のうち対応する一つの電力増幅器のための供給電圧を生成する変調を与えるべくそれぞれが構成される２以上の変調器を含む、請求項１の包絡線追跡システム。 further comprising two or more power amplifiers configured to amplify the two or more radio frequency signals;
The envelope tracker includes two or more regulated voltages each configured to receive the plurality of regulated voltages and provide a modulation that produces a supply voltage for a corresponding one of the two or more power amplifiers. The envelope tracking system of claim 1, including a modulator.
前記変調器出力フィルタは、少なくとも一つの直列インダクタ及び少なくとも一つのシャントキャパシタを含む、請求項１の包絡線追跡システム。 further comprising a modulator output filter connected between the output of the modulator and the power amplifier supply voltage;
The envelope tracking system of claim 1, wherein the modulator output filter includes at least one series inductor and at least one shunt capacitor.
無線周波数送信信号を生成するべく構成される送受信器と、
前記無線周波数送信信号を増幅するべく、かつ、電力増幅器供給電圧からの電力を受けるべく、構成される電力増幅器を含むフロントエンド回路と、
前記無線周波数送信信号の包絡線に対応する包絡線信号に基づいて電力増幅器供給電圧を生成するべく構成される包絡線追跡器を含む電力管理回路と
を含み、
前記包絡線追跡器は、
複数の調節済み電圧を出力するべく構成されるＤＣ／ＤＣ変換器と、
前記複数の調節済み電圧及び前記包絡線信号に基づいて前記電力増幅器供給電圧を制御するべく構成される変調器と、
前記無線周波数送信信号の電力レベルに基づいて前記複数の調節済み電圧のうち少なくとも一つの調節済み電圧の電圧レベルを制御するべく構成されるスイッチングポイント適合回路と
を含む、携帯デバイス。 A mobile device,
a transceiver configured to generate a radio frequency transmission signal;
a front end circuit including a power amplifier configured to amplify the radio frequency transmission signal and receive power from a power amplifier supply voltage;
a power management circuit including an envelope tracker configured to generate a power amplifier supply voltage based on an envelope signal corresponding to an envelope of the radio frequency transmission signal;
The envelope tracker includes:
a DC/DC converter configured to output a plurality of regulated voltages;
a modulator configured to control the power amplifier supply voltage based on the plurality of regulated voltages and the envelope signal;
a switching point adaptation circuit configured to control a voltage level of at least one regulated voltage of the plurality of regulated voltages based on a power level of the radio frequency transmission signal.
前記包絡線追跡器は、前記複数の調節済み電圧を受けて前記２以上の電力増幅器のうち対応する一つの電力増幅器のための供給電圧を生成する変調を与えるべくそれぞれが構成される２以上の変調器を含む、請求項１３の携帯デバイス。 including two or more power amplifiers configured to amplify the two or more radio frequency transmission signals;
The envelope tracker includes two or more regulated voltages each configured to receive the plurality of regulated voltages and provide a modulation that produces a supply voltage for a corresponding one of the two or more power amplifiers. 14. The mobile device of claim 13, comprising a modulator.
電力増幅器を使用して無線周波数信号を増幅することと、
電力増幅器供給電圧を使用して前記電力増幅器に電力を供給することと、
ＤＣ／ＤＣ変換器から複数の調節済み電圧を出力することと、
変調器を使用して、前記複数の調節済み電圧及び包絡線信号に基づいて前記電力増幅器供給電圧を制御することであって、前記包絡線信号は前記無線周波数信号の包絡線に対応することと、
前記無線周波数信号の電力レベルに基づいて前記複数の調節済み電圧のうち少なくとも一つの調節済み電圧の電圧レベルを制御することと
を含む、方法。 A method of envelope tracing, the method comprising:
amplifying the radio frequency signal using a power amplifier;
powering the power amplifier using a power amplifier supply voltage;
outputting a plurality of regulated voltages from the DC/DC converter;
using a modulator to control the power amplifier supply voltage based on the plurality of regulated voltages and an envelope signal, the envelope signal corresponding to an envelope of the radio frequency signal; ,
controlling a voltage level of at least one regulated voltage of the plurality of regulated voltages based on a power level of the radio frequency signal.
前記信号電力値に関連付けられる複数の所望電圧レベルを推定することと
をさらに含む、請求項１９の方法。 estimating a power level of the radio frequency signal based on a signal power value for at least one of a transmitted frame or a transmitted symbol;
20. The method of claim 19, further comprising estimating a plurality of desired voltage levels associated with the signal power value.
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| JP2024157936A JP2025000679A (en) | 2019-09-27 | 2024-09-12 | Envelope tracking system, mobile device, and method of envelope tracking |
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| US201962906932P | 2019-09-27 | 2019-09-27 | |
| US62/906,932 | 2019-09-27 | ||
| PCT/US2020/052319 WO2021061855A1 (en) | 2019-09-27 | 2020-09-23 | Multi-level envelope tracking systems with adjusted voltage steps |
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| JP2024157936A Division JP2025000679A (en) | 2019-09-27 | 2024-09-12 | Envelope tracking system, mobile device, and method of envelope tracking |
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| US (3) | US11223325B2 (en) |
| JP (2) | JP2022549665A (en) |
| KR (1) | KR20220070218A (en) |
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- 2020-09-23 DE DE112020004068.2T patent/DE112020004068T5/en active Pending
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- 2020-09-23 KR KR1020227010100A patent/KR20220070218A/en not_active Ceased
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