JP4634448B2 - 無線受信機フロントエンド、及び入力信号を周波数変換する方法 - Google Patents
無線受信機フロントエンド、及び入力信号を周波数変換する方法 Download PDFInfo
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- H03B5/1206—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device using multiple transistors for amplification
- H03B5/1209—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device using multiple transistors for amplification the amplifier having two current paths operating in a differential manner and a current source or degeneration circuit in common to both paths, e.g. a long-tailed pair.
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- H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
- H03B5/1206—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device using multiple transistors for amplification
- H03B5/1212—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device using multiple transistors for amplification the amplifier comprising a pair of transistors, wherein an output terminal of each being connected to an input terminal of the other, e.g. a cross coupled pair
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- H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
- H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
- H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
- H03B5/1237—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator
- H03B5/124—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator the means comprising a voltage dependent capacitance
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- H—ELECTRICITY
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- H03D7/14—Balanced arrangements
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- H03D7/1441—Balanced arrangements with transistors using field-effect transistors
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- H—ELECTRICITY
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- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
- H03D7/14—Balanced arrangements
- H03D7/1425—Balanced arrangements with transistors
- H03D7/145—Balanced arrangements with transistors using a combination of bipolar transistors and field-effect transistors
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
- H03D7/14—Balanced arrangements
- H03D7/1425—Balanced arrangements with transistors
- H03D7/1458—Double balanced arrangements, i.e. where both input signals are differential
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
- H03D7/14—Balanced arrangements
- H03D7/1425—Balanced arrangements with transistors
- H03D7/1483—Balanced arrangements with transistors comprising components for selecting a particular frequency component of the output
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- H—ELECTRICITY
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- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
- H03D7/16—Multiple-frequency-changing
- H03D7/165—Multiple-frequency-changing at least two frequency changers being located in different paths, e.g. in two paths with carriers in quadrature
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- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/0003—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain
- H04B1/0028—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain wherein the AD/DA conversion occurs at baseband stage
- H04B1/0032—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain wherein the AD/DA conversion occurs at baseband stage with analogue quadrature frequency conversion to and from the baseband
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- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
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- H—ELECTRICITY
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- H03B2200/00—Indexing scheme relating to details of oscillators covered by H03B
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- H03B2200/0078—Functional aspects of oscillators generating or using signals in quadrature
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- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D2200/00—Indexing scheme relating to details of demodulation or transference of modulation from one carrier to another covered by H03D
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- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
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- H03D2200/0047—Offset of DC voltage or frequency
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Description
Claims (26)
- 入力ポートと、入力ポートおよび出力ポートを有する低雑音増幅回路(50、60)と、入力ポートおよび出力ポートを有するミキサ装置(50a)と、N個の局部発振器信号を生成し、かつ前記ミキサ装置に接続された信号発生器と、N/2個の電流−電圧変換手段とを備え、第一の周波数を有する入力信号を、第二の周波数を有する出力信号に変換するためのN相無線受信機フロントエンドであって、
前記N相無線受信機フロントエンドの前記入力ポートは、直接、前記低雑音増幅回路(50、60)の前記入力ポートに接続され、
前記ミキサ装置は、電流モード型ミキサ装置であり、
前記低雑音増幅回路の前記出力ポートは、直接、前記ミキサ装置の前記入力ポートに接続され、
前記低雑音増幅回路(50)は、共通ゲートまたは共通ベースの構成で接続された少なくとも1つの入力トランジスタ(60)を備え、
前記信号発生器は、N相の位相シフトされた局部発振器信号を生成し、
前記ミキサ装置(50a)は、N/2個のミキサコア(51、52)を備え、各ミキサコアは、前記ミキサ装置の前記入力ポートに直接に接続される入力端子を含み、
前記N/2個の電流−電圧変換手段のそれぞれは、前記N/2個のミキサコアのそれぞれの出力端子と信号接地手段とに接続されたミキサ負荷を備え、
前記ミキサ負荷は、第一のコンデンサ(64a、66a、64b、66b)と並列に接続された抵抗(63a、65a、63b、65b)と、前記N/2個のミキサコアのそれぞれの前記出力端子間に接続された第二のコンデンサ(67a、67b)とを備えること
を特徴とするN相無線受信機フロントエンド。 - 前記ミキサコア(51、52)は、単一平衡型または二重平衡型ミキサコアである請求項1に記載のN相無線受信機フロントエンド。
- 前記低雑音増幅回路は、差動型増幅器(160a、160b)またはシングルエンド型増幅器(60)である請求項1または2に記載のN相無線受信機フロントエンド。
- 各ミキサコア(51、52)は、2または4つのトランジスタ(61a、62a、61b、62b、161a、161b、161c、161d、162a、162b、162c、162d)を備え、各ミキサコアの前記トランジスタは、2つの異なる局部発振器信号に応答する請求項1または2に記載のN相無線受信機フロントエンド。
- 前記信号発生器は、前記ミキサ装置(50a)を駆動する前記局部発振器信号を提供する発振器である請求項1乃至4のいずれか1項に記載のN相無線受信機フロントエンド。
- 前記信号発生器は、前記ミキサ装置(50a)の局部発振器入力端子に前記局部発振器信号を提供するため、トランス(75、77、81、82)を介して前記ミキサ装置(50a)に、動作するように接続された発振器である請求項1乃至5のいずれか1項に記載のN相無線受信機フロントエンド。
- 前記発振器は、直交局部発振器信号を提供する直交発振器である請求項6に記載のN相無線受信機フロントエンド。
- 前記発振器は、LCタンクを備え、各LCタンクは、インダクタ(75、77)およびコンデンサ(76、78)により提供される請求項6または7に記載のN相無線受信機フロントエンド。
- 前記LCタンクの前記インダクタ(75、77)は、前記トランスの一次巻線を提供し、
前記ミキサ装置(50a)の前記局部発振器入力端子に接続されたインダクタ(81、82)は、前記トランスの二次巻線を提供する請求項8に記載のN相無線受信機フロントエンド。 - 各LCタンクのコンデンサ(76、78)は、前記局部発振器信号の周波数を調整するための可変コンデンサである請求項8または9に記載のN相無線受信機フロントエンド。
- 前記信号発生器は、前記局部発振器信号を提供する高周波発振器(90)と周波数分割器(91)を備える請求項1乃至5のいずれか1項に記載のN相無線受信機フロントエンド。
- 前記周波数分割器(91)は、1/Nのデューティサイクルを有するN個の局部発振器信号を提供し、一度に局部発振器信号の一つのみがハイ状態となるように構成される請求項11に記載のN相無線受信機フロントエンド。
- 各ミキサ負荷の前記第一及び第二のコンデンサ(64a、66a、64b、66b、67a、67b)は、前記N相無線受信機フロントエンドに入力される信号が混合されたとき、当該信号の帯域外干渉を抑制するのに効果的な値を有する請求項1乃至12のいずれか1項に記載のN相無線受信機フロントエンド。
- 各ミキサ負荷の各コンデンサ(64a、66a、64b、66b、67a、67b)の静電容量は、異なる帯域幅を有する混合された入力信号の帯域外干渉を抑制するために可変である請求項13に記載のN相無線受信機フロントエンド。
- 前記低雑音増幅回路の前記入力ポートと接地手段とに接続された電流機器(68)をさらに備える請求項1乃至14のいずれか1項に記載のN相無線受信機フロントエンド。
- 前記電流機器(68)は、インダクタ、抵抗、または電流源として接続されたトランジスタである請求項15に記載のN相無線受信機フロントエンド。
- 前記N相無線受信機フロントエンドは、直交無線受信機フロントエンドである請求項1乃至16のいずれか1項に記載のN相無線受信機フロントエンド。
- 第一の周波数を有する入力信号を、第二の周波数を有する出力信号に変換する無線電子通信機器(1)に請求項1乃至17のいずれか1項に記載のN相無線受信機フロントエンドを使用する方法。
- 請求項1乃至17のいずれか1項に記載のN相無線受信機フロントエンドを備える無線電子通信機器(1)。
- 前記無線電子通信機器(1)は、携帯無線端末、ページャ、コミュニケータ、電子オーガナイザ、またはスマートフォンである請求項19に記載の無線電子通信機器。
- 前記無線電子通信機器(1)は、携帯電話である請求項19に記載の無線電子通信機器。
- N相無線受信機フロントエンドにおいて、第一の周波数を有する入力信号を、第二の周波数を有する出力信号に変換する方法であって、
前記方法は、
前記N相無線受信機フロントエンドの入力ポートで前記入力信号を受信するステップと、
共通ゲートまたは共通ベースの構成で接続された少なくとも1つの入力トランジスタ(60)を備える低雑音増幅回路(50、60)で、帯域外干渉を含む前記入力信号を増幅するステップと、
前記第二の周波数を有する混合信号を生成するように、電流モード型のミキサ装置(50a)において、前記入力信号および前記帯域外干渉を、前記第二の周波数を有する複数個の位相シフトされた局部発振器信号と混合するステップと、
それぞれが、第一のコンデンサ(64a、66a、64b、66b)と並列に接続された抵抗(63a、65a、63b、65b)と、前記ミキサ装置の出力端子間に接続された第二のコンデンサ(67a、67b)とを備える、複数のミキサ負荷であって、それぞれが前記ミキサ装置(50a)の出力ポートと信号接地手段とに接続された前記複数のミキサ負荷に対して、前記混合信号を供給することによって、前記複数のミキサ負荷を用いて前記混合信号の前記帯域外干渉を抑制するステップと、
を備えることを特徴とする方法。 - 前記抑制するステップは、前記混合信号の帯域外干渉を抑制するのに効果的な値を有する前記第一及び第二のコンデンサ(64a、66a、64b、66b、67a、67b)によって抑制するステップを備える請求項22に記載の方法。
- 異なる帯域幅を有する混合された入力信号の帯域外干渉を抑制する周波数選択性負荷の、可変コンデンサである前記第一及び第二のコンデンサ(64a、66a、64b、66b、67a、67b)の前記静電容量を調整するステップをさらに備える請求項23に記載の方法。
- 前記局部発振器信号を生成するステップと、
前記生成した局部発振器信号を前記ミキサ装置(50a)の第一および第二の単一平衡型ミキサコア、または前記ミキサ装置(50a)の二重平衡型のミキサコア(51、52)に供給するステップと、をさらに備える請求項22乃至24のいずれか1項に記載の方法。 - 前記局部発振器信号の周波数を調整するため、前記ミキサ装置(50a)に接続された発振器のコンデンサ(76、78)の静電容量を調整するステップをさらに備える請求項25に記載の方法。
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EP04015808A EP1615336B1 (en) | 2004-07-06 | 2004-07-06 | Radio receiver front-end and a method for suppressing out-of-band interference |
US58924704P | 2004-07-20 | 2004-07-20 | |
PCT/EP2005/007282 WO2006002994A1 (en) | 2004-07-06 | 2005-07-06 | Radio-receiver front-end and a method for frequency converting an input signal |
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US8145155B2 (en) | 2005-09-06 | 2012-03-27 | Mediatek, Inc. | Passive mixer and high Q RF filter using a passive mixer |
KR101325196B1 (ko) | 2012-10-22 | 2013-11-04 | 지씨티 세미컨덕터 인코포레이티드 | 임피던스 쉐이핑을 이용한 수신기 |
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JPH10126174A (ja) * | 1996-09-27 | 1998-05-15 | Northern Telecom Ltd | 高周波雑音およびインピーダンスの整合がとれた集積回路並びにその回路設計方法 |
JP2000059148A (ja) * | 1998-07-30 | 2000-02-25 | Koninkl Philips Electronics Nv | 電子回路、増幅器及び混合回路 |
JP2001053553A (ja) * | 1999-08-17 | 2001-02-23 | Sony Corp | 位相反転回路、ドライブ回路および受信機 |
JP2002050936A (ja) * | 2000-07-12 | 2002-02-15 | St Microelectronics Sa | 広帯域増幅器 |
JP2002353741A (ja) * | 2001-03-23 | 2002-12-06 | Rf Chips Technology Inc | ミキサ回路 |
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US5507036A (en) * | 1994-09-30 | 1996-04-09 | Rockwell International | Apparatus with distortion cancelling feed forward signal |
US6377315B1 (en) * | 1998-11-12 | 2002-04-23 | Broadcom Corporation | System and method for providing a low power receiver design |
US6657502B2 (en) * | 2001-10-01 | 2003-12-02 | Motorola, Inc. | Multiphase voltage controlled oscillator |
TW513852B (en) * | 2002-01-21 | 2002-12-11 | Nat Chung Cheng Univerity | Multiphase oscillator and multiphase oscillation signal generating method |
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- 2005-07-06 WO PCT/EP2005/007282 patent/WO2006002994A1/en active Application Filing
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Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH10126174A (ja) * | 1996-09-27 | 1998-05-15 | Northern Telecom Ltd | 高周波雑音およびインピーダンスの整合がとれた集積回路並びにその回路設計方法 |
JP2000059148A (ja) * | 1998-07-30 | 2000-02-25 | Koninkl Philips Electronics Nv | 電子回路、増幅器及び混合回路 |
JP2001053553A (ja) * | 1999-08-17 | 2001-02-23 | Sony Corp | 位相反転回路、ドライブ回路および受信機 |
JP2002050936A (ja) * | 2000-07-12 | 2002-02-15 | St Microelectronics Sa | 広帯域増幅器 |
JP2002353741A (ja) * | 2001-03-23 | 2002-12-06 | Rf Chips Technology Inc | ミキサ回路 |
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JP2008505579A (ja) | 2008-02-21 |
KR20070043988A (ko) | 2007-04-26 |
WO2006002994A1 (en) | 2006-01-12 |
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