JP5003134B2 - 増幅装置 - Google Patents
増幅装置 Download PDFInfo
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- JP5003134B2 JP5003134B2 JP2006335657A JP2006335657A JP5003134B2 JP 5003134 B2 JP5003134 B2 JP 5003134B2 JP 2006335657 A JP2006335657 A JP 2006335657A JP 2006335657 A JP2006335657 A JP 2006335657A JP 5003134 B2 JP5003134 B2 JP 5003134B2
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03C—MODULATION
- H03C5/00—Amplitude modulation and angle modulation produced simultaneously or at will by the same modulating signal
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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
- H03F1/0222—Continuous control by using a signal derived from the input signal
- 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
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
- H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
- H03F3/217—Class D power amplifiers; Switching amplifiers
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/102—A non-specified detector of a signal envelope being used in an amplifying circuit
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/432—Two or more amplifiers of different type are coupled in parallel at the input or output, e.g. a class D and a linear amplifier, a class B and a class A amplifier
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
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Description
振幅成分と位相成分を含む入力信号の前記振幅成分を増幅して前記位相成分と合成することにより前記入力信号を増幅した出力信号を生成する増幅装置であって、
前記入力信号の前記振幅成分をパルス変調して増幅することでパルス変調信号を生成する第1のパルス変調部と、
前記第1のパルス変調部からの前記パルス変調信号をフィルタリングして、前記振幅成分を増幅した増幅振幅信号を生成する低域フィルタと、
前記入力信号の前記振幅成分を用いて、前記低域フィルタからの前記増幅振幅信号に含まれている誤差を補正することで補正振幅信号を生成する誤差補正部と、
前記誤差補正部からの前記補正振幅信号と前記入力信号の前記位相成分とを合成して前記出力信号を生成する合成部とを有している。
図1は、第1の実施形態による高周波増幅装置の構成を示すブロック図である。図1を参照すると、高周波増幅装置10は、RFアンプ11、第1のパルス変調部12、誤差補正部13、低域フィルタ14、包絡線検波器15、およびリミッタ16を有するEER増幅器である。
図1に示した第1の実施形態の高周波増幅装置10において、誤差補正部13は、リミッタ16からの位相信号と合成していない段階の、低域フィルタ14からの振幅信号を誤差の補正に用いていた。しかし、本発明はこの構成に限定されるものではない。他の構成例として、誤差補正部13は、低域フィルタ14からの振幅信号とリミッタ16からの位相信号とをRFアンプ11で合成した高周波出力信号から振幅成分を取り出し、それを誤差の補正に用いることとしてもよい。
第1の実施形態では、高周波入力信号から包絡線検波器15で振幅成分を取り出し、リミッタ16で位相成分を取り出す構成を示したが、本発明はこの構成に限定されるものではない。ベースバンド部が振幅信号と位相信号とを出力することのできる構成であれば、高周波増幅装置は、それらを直接用いてもよい。そうすれば、第1の実施形態にあるような、高周波入力信号から振幅信号を取り出す包絡線検波器15や位相信号を取り出すリミッタ16が不要となり、回路規模が削減される。
11 RFアンプ
12 第1のパルス変調部
13 誤差補正部
14 低域フィルタ
15 包絡線検波器
16 リミッタ
17 包絡線検波器
18 遅延線路
19 周波数変換器
20 高周波増幅装置
21 減算器
22 サンプルホールド回路
23 比較器(量子化器)
24 スイッチングアンプ
25 減衰器
26 積分器
27 オペアンプ
28 シュミット回路
29 容量
30,30’ 抵抗
31 誤差アンプ
32 加算器
33 減衰器
34,37 誤差アンプ
35,38 加算器
36,39 減衰器
40 高周波増幅装置
41 第2のパルス変調部
42 低域フィルタ
50 パルス変調器
91 ミキサ
92 ローカル信号発生器
Claims (13)
- 振幅成分と位相成分を含む入力信号の前記振幅成分を増幅して前記位相成分と合成することにより前記入力信号を増幅した出力信号を生成する増幅装置において、
前記入力信号の前記振幅成分をパルス変調して増幅することでパルス変調信号を生成する第1のパルス変調部と、
前記第1のパルス変調部からの前記パルス変調信号を入力する第1の端子と、前記パルス変調信号をフィルタリングして、前記振幅成分を増幅した増幅振幅信号を出力する第2の端子を備える低域フィルタと、
前記第2の端子に接続された第3の端子と、第4の端子を備える容量と、
前記入力信号の前記振幅成分を入力する第5の端子と、所定の減衰器を介して前記第2の端子に接続され、前記増幅振幅信号を入力する第6の端子と、前記第4の端子に接続され、前記振幅成分と前記増幅振幅信号の差分を増幅して補正振幅信号を出力する第7の端子を備える誤差アンプと、
を有し、
該差分の信号をパルス変調して増幅することによりパルス信号を生成する第2のパルス変調部をさらに備え、
該パルス信号をフィルタリングした後に前記誤差アンプに負帰還する、ことを特徴とする増幅装置。 - 前記入力信号から前記振幅成分を取り出す包絡線検波器をさらに有する、請求項1に記載の増幅装置。
- 前記入力信号から前記位相成分を取り出すリミッタをさらに有する、請求項2に記載の増幅装置。
- 前記振幅成分を含んだままの前記入力信号を前記位相成分として用いる、請求項2に記載の増幅装置。
- 前段に配置されたベースバンド部からの前記振幅成分および前記位相成分を用いる、請求項1から4のいずれか1項に記載の増幅装置。
- 前記ベースバンド部からの位相成分にキャリア周波数を合成して用いる、請求項5に記載の増幅装置。
- 前記第1のパルス変調部は、その出力段において、スイッチングアンプを用いて電流増幅を行なう、請求項1から6のいずれか1項に記載の増幅装置。
- 前記第1のパルス変調部は、前記入力信号の前記振幅成分をデルタ変調方式でパルス変調する、請求項1から7のいずれか1項に記載の増幅装置。
- 前記第1のパルス変調部は、前記入力信号の前記振幅成分をシグマデルタ変調方式でパルス変調する、請求項1から7のいずれか1項に記載の増幅装置。
- 前記第1のパルス変調部は、前記入力信号の前記振幅成分をパルス幅変調方式でパルス変調する、請求項1から7のいずれか1項に記載の増幅装置。
- 前記第2のパルス変調部は、前記誤差アンプからの前記差分の信号をデルタ変調方式でパルス変調する、請求項1に記載の増幅装置。
- 前記第2のパルス変調部は、前記誤差アンプからの前記差分の信号をシグマデルタ変調方式でパルス変調する、請求項1に記載の増幅装置。
- 前記第2のパルス変調部は、前記誤差アンプからの前記差分の信号をパルス幅変調方式でパルス変調する、請求項1に記載の増幅装置。
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JP2006335657A JP5003134B2 (ja) | 2006-01-10 | 2006-12-13 | 増幅装置 |
US11/946,670 US7696818B2 (en) | 2006-01-10 | 2007-11-28 | Amplifying apparatus |
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JP2006335657A JP5003134B2 (ja) | 2006-01-10 | 2006-12-13 | 増幅装置 |
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JP2007215158A JP2007215158A (ja) | 2007-08-23 |
JP5003134B2 true JP5003134B2 (ja) | 2012-08-15 |
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US20080258831A1 (en) | 2008-10-23 |
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