JP2004104194A5 - - Google Patents

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JP2004104194A5
JP2004104194A5 JP2002259526A JP2002259526A JP2004104194A5 JP 2004104194 A5 JP2004104194 A5 JP 2004104194A5 JP 2002259526 A JP2002259526 A JP 2002259526A JP 2002259526 A JP2002259526 A JP 2002259526A JP 2004104194 A5 JP2004104194 A5 JP 2004104194A5
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transmission signal
unit
transmission
power amplifier
output
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JP2002259526A
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JP3979237B2 (en
JP2004104194A (en
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Priority claimed from JP2002259526A external-priority patent/JP3979237B2/en
Priority to JP2002259526A priority Critical patent/JP3979237B2/en
Priority to EP06017550A priority patent/EP1755214B1/en
Priority to US10/655,045 priority patent/US7184491B2/en
Priority to EP03019645A priority patent/EP1396932B1/en
Priority to CN2007101102074A priority patent/CN101102120B/en
Priority to CN031554229A priority patent/CN1496018B/en
Priority to DE60336273T priority patent/DE60336273D1/en
Priority to DE60309989T priority patent/DE60309989T2/en
Publication of JP2004104194A publication Critical patent/JP2004104194A/en
Publication of JP2004104194A5 publication Critical patent/JP2004104194A5/ja
Publication of JP3979237B2 publication Critical patent/JP3979237B2/en
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Claims (9)

無線通信装置であって、
送信信号のベースバンド処理を行うベースバンド部と、
該ベースバンド部から出力される送信信号を送信出力に応じて増幅してフロントエンド部へ出力する無線部と、
該無線部から入力される送信信号をアンテナへ出力するフロントエンド部とを有し、
上記無線部は、
上記ベースバンド部から入力された送信信号を周波数変換する直交変調器と、
上記周波数変換された信号を送信出力に応じて増幅するＡＧＣアンプと、
上記ＡＧＣアンプで増幅された送信信号を増幅して上記フロントエンド部へ出力するパワーアンプと、
上記パワーアンプの電源電圧を制御する振幅変調回路とを有し、
上記送信信号の送信出力が所定の閾値よりも大きい場合は、上記振幅変調回路は、上記送信信号の振幅に対応した電源電圧制御信号を上記パワーアンプに入力し、上記パワーアンプは、上記振幅変調回路から入力された電源電圧制御信号に基づいて入力された信号をＥＥＲ方式で増幅し、
送信信号の送信出力が所定の閾値以下の場合は、送信信号を線形に増幅し、
上記所定の閾値は、上記パワーアンプの特性により定まる、上記パワーアンプを線形パワーアンプとして用いるのに適する線形領域と上記パワーアンプを飽和パワーアンプとして用いるのに適する飽和領域とに基づいて設定されることを特徴とする無線通信装置。A wireless communication device ,
A baseband unit that performs baseband processing of a transmission signal;
A radio unit for outputting to the front end portion is amplified in accordance with the transmission output transmission signal output from said baseband unit,
A front end unit that outputs a transmission signal input from the radio unit to an antenna;
The radio unit is
An orthogonal modulator that converts the frequency of a transmission signal input from the baseband unit;
An AGC amplifier that amplifies the frequency-converted signal according to a transmission output;
A power amplifier that amplifies the transmission signal amplified by the AGC amplifier and outputs the amplified signal to the front end unit;
An amplitude modulation circuit for controlling the power supply voltage of the power amplifier,
When the transmission output of the transmission signal is larger than a predetermined threshold, the amplitude modulation circuit inputs a power supply voltage control signal corresponding to the amplitude of the transmission signal to the power amplifier, and the power amplifier Amplifies the input signal based on the power supply voltage control signal input from the circuit by the EER method,
When the transmission output of the transmission signal is below a predetermined threshold, the transmission signal is linearly amplified,
The predetermined threshold is set based on a linear region suitable for using the power amplifier as a linear power amplifier and a saturation region suitable for using the power amplifier as a saturated power amplifier, which are determined by characteristics of the power amplifier. A wireless communication apparatus . 請求項１記載の無線通信装置であって、
上記ベースバンド部から入力された送信信号を複数の成分に分離して上記無線部へ出力する変換部を有し、
上記送信信号の送信出力が所定の閾値よりも大きい場合は、
上記変換部は、上記ベースバンド部から入力された送信信号を振幅成分と位相成分とに分離し、さらに該位相成分を単位円上のＩ成分とＱ成分とに変換し、上記送信信号の振幅成分と上記送信信号の単位円上のＩ成分と上記送信信号の単位円上のＱ成分とを出力し、
上記振幅変調回路は、上記変換部から出力された上記送信信号の振幅成分に対応した電源電圧制御信号を上記パワーアンプに入力し、
上記直交変調器は、上記変換部から出力された上記送信信号の単位円上のＩ成分と上記送信信号の単位円上のＱ成分とを周波数変換することを特徴とする無線通信装置。The wireless communication device according to claim 1,
A transmission unit that separates a transmission signal input from the baseband unit into a plurality of components and outputs the component to the radio unit ;
If the transmission output of the transmission signal is greater than a predetermined threshold,
The conversion unit separates the transmission signal input from the baseband unit into an amplitude component and a phase component, further converts the phase component into an I component and a Q component on a unit circle, and converts the amplitude of the transmission signal Output the component, the I component on the unit circle of the transmission signal, and the Q component on the unit circle of the transmission signal,
The amplitude modulation circuit inputs a power supply voltage control signal corresponding to the amplitude component of the transmission signal output from the conversion unit to the power amplifier,
The quadrature modulator, a radio communication apparatus characterized by frequency conversion of the Q component on the unit circle of the I component and the transmission signal on the unit circle of the transmission signal outputted from the conversion unit. 請求項１記載の無線通信装置であって、
上記無線部は、上記送信信号の送信出力が所定の閾値以下の場合には、上記ＡＧＣアンプで増幅した送信信号を上記パワーアンプで増幅することなくフロントエンド部へ出力することを特徴とする無線通信装置。The wireless communication device according to claim 1,
The radio unit, if the transmission output of the transmission signal is less than a predetermined threshold value, and outputs the transmission signal amplified by the AGC amplifier to the front-end unit without amplifying in said power amplifier radio Communication device . 請求項１記載の無線通信装置であって、
上記無線部は、上記送信信号の送信出力と上記所定の閾値との比較を行う際に、上記ベースバンド部から供給されるゲインコントロール信号を用いることを特徴とする無線通信装置。The wireless communication device according to claim 1,
The wireless communication apparatus , wherein the wireless unit uses a gain control signal supplied from the baseband unit when comparing the transmission output of the transmission signal with the predetermined threshold. 請求項１記載の無線通信装置であって、
上記ベースバンド部から入力された送信信号を複数の成分に分離してデジタル信号として出力する変換部と
上記変換部から出力されたデジタル信号をアナログに変換する第１及び第２のＤＡＣ部とを有し、
上記変換部は、上記送信信号の送信出力と所定の閾値との比較を行い、
上記送信信号の送信出力が所定の閾値以下の場合は、上記変換部は、上記送信信号のＩ成分と上記送信信号のＱ成分とをそれぞれ上記第１又は第２のＤＡＣ部のいずれかに入力し、
上記送信信号の送信出力が所定の閾値よりも大きい場合は、上記変換部は、上記送信信号の位相成分を上記第１のＤＡＣ部に入力し、上記送信信号の振幅成分を上記第２のＤＡＣ部に入力し、
上記第１のＤＡＣ部は、上記直交変調器に接続され、
上記第２のＤＡＣ部は、上記送信信号の送信出力が所定の閾値以下の場合は、上記直交変調器へ向けて出力を行い、上記送信信号の送信出力が所定の閾値よりも大きい場合は、上記振幅変調回路へ向けて出力を行うことを特徴とする無線通信装置。The wireless communication device according to claim 1,
A conversion unit that separates a transmission signal input from the baseband unit into a plurality of components and outputs it as a digital signal, and a first and second DAC unit that convert the digital signal output from the conversion unit into analog Have
The converter performs a comparison between the transmission output of the transmission signal and a predetermined threshold,
When the transmission output of the transmission signal is equal to or less than a predetermined threshold, the conversion unit inputs the I component of the transmission signal and the Q component of the transmission signal to either the first or second DAC unit, respectively. And
When the transmission output of the transmission signal is larger than a predetermined threshold, the conversion unit inputs the phase component of the transmission signal to the first DAC unit, and the amplitude component of the transmission signal is input to the second DAC. Enter
The first DAC unit is connected to the quadrature modulator,
The second DAC section, if the transmission output of the transmission signal is less than a predetermined threshold value, performs output toward the orthogonal modulator, when transmission output of the transmission signal is larger than a predetermined threshold, A radio communication apparatus that outputs to the amplitude modulation circuit. 請求項１記載の無線通信装置であって、上記振幅変調回路において、
送信信号を線形に増幅している場合には、所定の閾値を第１の値とし、
ＥＥＲ方式で上記入力された信号を増幅している場合には、所定の閾値を第２の値とし、
上記第１の値が表す送信出力は上記第２の値が表す送信出力よりも高いことを特徴とする無線通信装置。The wireless communication apparatus according to claim 1, wherein the amplitude modulation circuit includes:
When the transmission signal is linearly amplified, the predetermined threshold is the first value,
When the input signal is amplified by the EER method, the predetermined threshold is set to the second value,
The wireless communication apparatus characterized in that the transmission output represented by the first value is higher than the transmission output represented by the second value. 無線通信装置であって、
送信信号のベースバンド処理を行うペースバンド部と、
該ベースバンド部から出力される送信信号を送信出力に応じて増幅してフロントエンド部へ出力する無線部と、
該無線部から入力される送信信号をアンテナへ出力するフロントエンド部とを有し、
上記無線部は、
上記ベースバンド部から入力された送信信号を周波数変換する直交変調器と、
上記周波数変換された信号を送信出力に応じて増幅するＡＧＣアンプと、
上記ＡＧＣアンプにより増幅された送信信号を上記パワーアンプに入力するリミッタと
上記リミッタから入力された送信信号を増幅して上記フロントエンド部へ出力するパワーアンプと、
上記ベースバンド部から入力される送信信号の振幅情報を抽出して出力する包絡線検波部と、
上記包絡線検波部から出力される振幅情報に基づいて上記パワーアンプの電源電圧を制御する振幅変調回路とを有し、
上記リミッタは、上記ＡＧＣアンプにより増幅された送信信号の振幅が第３の閾値よりも大きい場合に上記ＡＧＣアンプにより増幅された送信信号にクリッピングを施し、
上記リミッタでクリッピングが施されない場合には、上記パワーアンプの線形領域を用いて上記ＡＧＣアンプにより増幅された送信信号を線形に増幅し、
上記リミッタでクリッピングが施された場合には、上記振幅変調回路は、上記包絡線検波部から入力された振幅情報に対応する電源電圧制御信号を上記パワーアンプに入力し、上記パワーアンプの飽和領域を用いて上記ＡＧＣアンプにより増幅された送信信号を増幅することを特徴とする無線通信装置。A wireless communication device ,
A paceband unit that performs baseband processing of the transmission signal;
A radio unit for outputting to the front end portion is amplified in accordance with the transmission output transmission signal output from said baseband unit,
A front end unit that outputs a transmission signal input from the radio unit to an antenna;
The radio unit is
An orthogonal modulator that converts the frequency of a transmission signal input from the baseband unit;
An AGC amplifier that amplifies the frequency-converted signal according to a transmission output;
A limiter that inputs the transmission signal amplified by the AGC amplifier to the power amplifier; a power amplifier that amplifies the transmission signal input from the limiter and outputs the amplified signal to the front end unit;
An envelope detector for extracting and outputting amplitude information of a transmission signal input from the baseband unit;
An amplitude modulation circuit that controls the power supply voltage of the power amplifier based on amplitude information output from the envelope detector;
The limiter performs clipping on the transmission signal amplified by the AGC amplifier when the amplitude of the transmission signal amplified by the AGC amplifier is larger than a third threshold;
When clipping is not performed by the limiter, the transmission signal amplified by the AGC amplifier is linearly amplified using the linear region of the power amplifier,
When clipping is performed by the limiter, the amplitude modulation circuit inputs a power supply voltage control signal corresponding to the amplitude information input from the envelope detector to the power amplifier, and a saturation region of the power amplifier. A radio communication apparatus characterized in that the transmission signal amplified by the AGC amplifier is amplified by using an AGC amplifier. 請求項７記載の無線通信装置であって、
上記リミッタでクリッピングが行われたか否かを、該リミッタのベース電流値をモニタすることにより判定することを特徴とする無線通信装置。The wireless communication device according to claim 7,
A wireless communication apparatus , wherein whether or not clipping has been performed by the limiter is determined by monitoring a base current value of the limiter. 無線通信装置において、ベースバンド部から入力されてフロントエンド部へ出力される送信信号の増幅を制御する集積回路であって、
上記ベースバンド部から入力された送信信号を周波数変換する直交変調器と、
上記周波数変換された信号を送信出力に応じて増幅し、該ＡＧＣアンプの出力信号をさらに増幅してフロントエンド部へ出力するパワーアンプへ出力するＡＧＣアンプと、
上記パワーアンプの電源電圧を制御する振幅変調回路と、
上記送信信号の送信出力と所定の閾値との比較を行う増幅方式決定手段とを有し、
上記送信信号の送信出力が所定の閾値よりも大きい場合は、上記振幅変調回路は、上記送信信号の振幅に対応した電源電圧制御信号を上記パワーアンプへ出力し、上記増幅方式決定手段は上記パワーアンプにＥＥＲ方式で増幅を行うよう指示し、
送信信号の送信出力が所定の閾値以下の場合は、上記増幅方式決定手段は、上記パワーアンプに送信信号を線形に増幅するよう指示し、
上記所定の閾値は、上記パワーアンプの特性により定まる、上記パワーアンプを線形パワーアンプとして用いるのに適する線形領域と上記パワーアンプを飽和パワーアンプとして用いるのに適する飽和領域とに基づいて設定されることを特徴とする集積回路。An integrated circuit that controls amplification of a transmission signal that is input from a baseband unit and output to a front end unit in a wireless communication device,
An orthogonal modulator that converts the frequency of a transmission signal input from the baseband unit;
An AGC amplifier that amplifies the frequency-converted signal according to a transmission output, further amplifies the output signal of the AGC amplifier, and outputs the amplified signal to a power amplifier;
An amplitude modulation circuit for controlling the power supply voltage of the power amplifier;
Amplifying method determining means for comparing the transmission output of the transmission signal with a predetermined threshold;
When the transmission output of the transmission signal is larger than a predetermined threshold, the amplitude modulation circuit outputs a power supply voltage control signal corresponding to the amplitude of the transmission signal to the power amplifier, and the amplification method determination means Instruct the amplifier to amplify by EER,
When the transmission output of the transmission signal is less than or equal to a predetermined threshold, the amplification method determination means instructs the power amplifier to linearly amplify the transmission signal,
The predetermined threshold is set based on a linear region suitable for using the power amplifier as a linear power amplifier and a saturation region suitable for using the power amplifier as a saturated power amplifier, which are determined by characteristics of the power amplifier. An integrated circuit characterized by that.
JP2002259526A 2002-09-05 2002-09-05 Wireless communication device and high-frequency integrated circuit used therefor Expired - Fee Related JP3979237B2 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
JP2002259526A JP3979237B2 (en) 2002-09-05 2002-09-05 Wireless communication device and high-frequency integrated circuit used therefor
DE60336273T DE60336273D1 (en) 2002-09-05 2003-09-05 RF power amplifier for wireless communication device
US10/655,045 US7184491B2 (en) 2002-09-05 2003-09-05 Wireless communication apparatus
EP03019645A EP1396932B1 (en) 2002-09-05 2003-09-05 Wireless communication apparatus
CN2007101102074A CN101102120B (en) 2002-09-05 2003-09-05 Wireless communication apparatus
CN031554229A CN1496018B (en) 2002-09-05 2003-09-05 Radio communication device
EP06017550A EP1755214B1 (en) 2002-09-05 2003-09-05 RF power amplifier for wireless communication apparatus
DE60309989T DE60309989T2 (en) 2002-09-05 2003-09-05 Device for wireless communication

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002259526A JP3979237B2 (en) 2002-09-05 2002-09-05 Wireless communication device and high-frequency integrated circuit used therefor

Publications (3)

Publication Number Publication Date
JP2004104194A JP2004104194A (en) 2004-04-02
JP2004104194A5 true JP2004104194A5 (en) 2005-09-29
JP3979237B2 JP3979237B2 (en) 2007-09-19

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JP (1) JP3979237B2 (en)
CN (1) CN101102120B (en)

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