JP2013187674A5 - - Google Patents
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- JP2013187674A5 JP2013187674A5 JP2012050185A JP2012050185A JP2013187674A5 JP 2013187674 A5 JP2013187674 A5 JP 2013187674A5 JP 2012050185 A JP2012050185 A JP 2012050185A JP 2012050185 A JP2012050185 A JP 2012050185A JP 2013187674 A5 JP2013187674 A5 JP 2013187674A5
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- power supply
- control unit
- supply control
- frequency
- memory
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特に、近年の移動体通信で使われているＣＤＭＡ（Code Division Multiple Access）、ＷＣＤＭＡ（Wideband Code Division Multiple Access：登録商標）、ＦＤＭ（Frequency Division Multiplexing）などを用いたデジタル変調波のように、平均電力に対してピーク電力が高い信号に対しては、広い入力電力範囲において高効率であるというＥＴの特長を生かすことができる。 In particular, as in digital modulation waves using CDMA (Code Division Multiple Access), WCDMA (Wideband Code Division Multiple Access : registered trademark ), FDM (Frequency Division Multiplexing), etc. used in recent mobile communications, For signals having high peak power relative to power, the ET feature of high efficiency in a wide input power range can be utilized.
閾値メモリ１０８ｂは、電源電圧である閾値を複数記憶する。なお、閾値の数は、電源段数と等しい。頻度メモリ１０８ａは、閾値と他の閾値とで挟まれた区間の電圧ついて、送信ＢＢ信号の出現頻度を複数記憶する。 The threshold memory 108b stores a plurality of thresholds that are power supply voltages. Note that the number of thresholds is equal to the number of power supply stages. The frequency memory 108a stores a plurality of appearance frequencies of the transmission BB signal for the voltage in the section sandwiched between the threshold and another threshold.
図１５を参照して、電源制御部１０１Ａの処理フローを説明する。なお、この処理フローは、電源投入とともに開始される。図１５において、電源制御部１０１Ａは、階級のデータ区間を決定する（Ｓ２１０）。電源制御部１０１Ａは、閾値情報を閾値メモリに格納する（Ｓ２２１）。電源制御部１０１Ａは、頻度メモリに割り当てる（Ｓ２２２）。電源制御部１０１Ａは、同時にＥＴ電源の制御信号を生成し、出力する（Ｓ２２３）。ステップ２２２あと、電源制御部１０１Ａは、送信ＢＢ信号の振幅（√（Ｉ＾２＋Ｑ＾２））を計算する（Ｓ２２４）。電源制御部１０１Ａは、計算結果を複数の閾値と比較し、該当する頻度メモリへ格納する（Ｓ２２６）。電源制御部１０１Ａは、規定回数終了したか判定する（Ｓ２２７）。ＹＥＳのとき、電源制御部１０１Ａは、頻度メモリ内において、自区間の頻度が隣区間の頻度と等しいか判定する（Ｓ２２８）。ＹＥＳのとき、電源制御部１０１Ａは、ステップ２２４に遷移する。ステップ２２８でＮＯのとき、電源制御部１０１Ａは、頻度の高い方へ頻度を移動して（Ｓ２２９）、ステップ２２１に遷移する。ステップ２２７でＮＯのとき、電源制御部１０１Ａは、ステップ２２４に遷移する。 With reference to FIG. 15, the processing flow of the power supply control unit 101A will be described. This processing flow is started when the power is turned on. In FIG. 15, the power supply control unit 101A determines a class data section (S210). The power supply control unit 101A stores the threshold information in the threshold memory (S221). The power supply control unit 101A allocates the frequency memory (S222). The power supply control unit 101A simultaneously generates and outputs a control signal for the ET power supply (S223). After step 222, power supply control section 101A calculates the amplitude (√ (I ^ 2 + Q ^ 2) ) of the transmission BB signal (S224). The power supply control unit 101A compares the calculation results with a plurality of threshold values and stores them in the corresponding frequency memory (S226). The power supply control unit 101A determines whether the specified number of times has been completed (S227). When YES, the power supply control unit 101A determines whether or not the frequency of the own section is equal to the frequency of the adjacent section in the frequency memory (S228). When YES, the power supply control unit 101A makes a transition to Step 224. When NO in step 228, power supply control unit 101A moves the frequency to the higher frequency (S229), and transitions to step 221. When NO at step 227, the power supply control unit 101A makes a transition to step 224.
図１６を参照して、トレーニングのフローを説明する。図１６において、電源制御部１０１Ａは、送信ＢＢ信号の振幅（√（Ｉ＾２＋Ｑ＾２））を計算する（Ｓ２１１）。電源制御部１０１Ａは、振幅が最大または最小か判定する（Ｓ２１２）。ＹＥＳのとき、電源制御部１０１Ａは、最大値／最小値情報をメモリへ格納して（Ｓ２１３）、ステップ２１１に遷移する。ステップ２１２でＮＯのとき、電源制御部１０１Ａは、規定回数終了したか判定する（Ｓ２１４）。ＹＥＳのとき、電源制御部１０１Ａは、データ区間Ｘとして、（最大値−最小値）／電源段数ｎとする（Ｓ２１６）。電源制御部１０１Ａは、階級Ａｎ＝ｎＸとして（Ｓ２１７）、リターンする。ステップ２１４でＮＯのとき、電源制御部１０１Ａは、ステップ２１１に遷移する。
The training flow will be described with reference to FIG. In FIG. 16, the power supply control unit 101A calculates the amplitude (√ (I ^ 2 + Q ^ 2) ) of the transmission BB signal (S211). The power supply control unit 101A determines whether the amplitude is maximum or minimum (S212). If YES, the power supply control unit 101A stores the maximum value / minimum value information in the memory (S213), and the process proceeds to step 211. When NO at step 212, power supply control unit 101A determines whether the specified number of times has been completed (S214). When YES, the power supply control unit 101A sets (maximum value−minimum value) / power supply stage number n as the data section X (S216). The power supply control unit 101A sets the class An = nX ( S217 ) and returns. When NO in step 214, the power supply control unit 101A transitions to step 211.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012050185A JP5759920B2 (en) | 2012-03-07 | 2012-03-07 | Wireless transmitter and envelope tracking power control method |
| US13/477,108 US8600321B2 (en) | 2011-06-03 | 2012-05-22 | Radio transmitter and envelope tracking power supply control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012050185A JP5759920B2 (en) | 2012-03-07 | 2012-03-07 | Wireless transmitter and envelope tracking power control method |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2013187674A JP2013187674A (en) | 2013-09-19 |
| JP2013187674A5 true JP2013187674A5 (en) | 2014-09-11 |
| JP5759920B2 JP5759920B2 (en) | 2015-08-05 |
Family
ID=49388767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2012050185A Expired - Fee Related JP5759920B2 (en) | 2011-06-03 | 2012-03-07 | Wireless transmitter and envelope tracking power control method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP5759920B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3490141B1 (en) | 2014-08-11 | 2020-04-01 | Huawei Technologies Co., Ltd. | Power amplifier, radio remote unit, and base station |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010512705A (en) * | 2006-12-12 | 2010-04-22 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | High efficiency modulation RF amplifier |
| JP5532968B2 (en) * | 2010-01-29 | 2014-06-25 | 住友電気工業株式会社 | Signal processing circuit and communication apparatus having this circuit |
| JP2012004882A (en) * | 2010-06-17 | 2012-01-05 | Panasonic Corp | Modulation power supply circuit |
| WO2012066659A1 (en) * | 2010-11-17 | 2012-05-24 | 株式会社日立製作所 | High-frequency amplifier, and high-frequency module and wireless machine using same |
-
2012
- 2012-03-07 JP JP2012050185A patent/JP5759920B2/en not_active Expired - Fee Related
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