JP2022516838A - 電力増幅器にバイアスをかける装置及び方法 - Google Patents
電力増幅器にバイアスをかける装置及び方法 Download PDFInfo
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Abstract
Description
Claims (20)
- 携帯デバイスであって、
無線周波数入力信号を生成するべく構成される送受信器と、
前記無線周波数入力信号を受信して無線周波数出力信号を出力するべく構成される電力増幅器を含むフロントエンドシステムと、
前記無線周波数出力信号を無線送信するべく構成されるアンテナと
を含み、
前記電力増幅器は、
前記無線周波数入力信号を増幅するべく構成される電力増幅器トランジスタと、
DCバイアス電圧部によって前記電力増幅器トランジスタの入力部にバイアスをかけるべく構成されるバイアスネットワークと
を含み、
前記バイアスネットワークは、前記電力増幅器の位相応答を平坦にするべく操作可能なリアクタンスを有する、携帯デバイス。 - 前記リアクタンスは、前記電力増幅器トランジスタの固有入力キャパシタンスを追跡するべく操作可能である、請求項1の携帯デバイス。
- 前記バイアスネットワークは、
DCバイアス電圧部と前記電力増幅器トランジスタの入力部との間に電気的に接続されるバイアスインピーダンス部と、
前記電力増幅器トランジスタの入力部と基準電圧部との間に電気的に接続されるシャントインピーダンス部と
を含む、請求項1の携帯デバイス。 - 前記バイアスインピーダンス部は第1抵抗器を含み、
前記シャントインピーダンス部は直列された第2抵抗器及びキャパシタを含む、請求項3の携帯デバイス。 - 前記シャントインピーダンス部はさらに、前記第2抵抗器及び前記キャパシタに直列されたインダクタを含む、請求項4の携帯デバイス。
- 前記バイアスネットワークは、前記電力増幅器トランジスタの入力部と前記DCバイアス電圧部との間に電気的に並列に接続される抵抗器及びキャパシタを含む、請求項1の携帯デバイス。
- 前記電力増幅器トランジスタは、互いに並列に動作する複数のトランジスタ要素として実装され、
前記バイアスネットワークは複数の抵抗器及び複数のキャパシタを含み、
前記複数の抵抗器はそれぞれが、前記DCバイアス電圧と前記複数のトランジスタ要素のうちの対応する一つへの入力部との間において、前記複数のキャパシタのうちの対応する一つに並列に接続される、請求項1の携帯デバイス。 - 前記バイアスネットワークは、
前記DCバイアス電圧部と前記電力増幅器トランジスタへの入力部との間に電気的に接続されるキャパシタとインダクタとの直列結合体と、
前記キャパシタとインダクタとの直列結合体に並列された抵抗器と
を含む、請求項1の携帯デバイス。 - 前記電力増幅器は入力段及び出力段を含み、
前記電力増幅器トランジスタは、前記電力増幅器の出力段に組み入れられる、請求項1の携帯デバイス。 - 電力増幅器システムであって、
DCバイアス電圧を生成するべく構成されるバイアス制御回路と、
無線周波数入力信号を受信して無線周波数出力信号を出力するべく構成される電力増幅器と
を含み、
前記電力増幅器は、
前記無線周波数入力信号を増幅するべく構成される電力増幅器トランジスタと、
前記DCバイアス電圧によって前記電力増幅器トランジスタの入力部にバイアスをかけるべく構成されるバイアスネットワークと
を含み、
前記バイアスネットワークは、前記電力増幅器の位相応答を平坦にするべく操作可能なリアクタンスを有する、電力増幅器システム。 - 前記リアクタンスは、前記電力増幅器トランジスタの固有入力キャパシタンスを追跡するべく操作可能である、請求項10の電力増幅器システム。
- 前記バイアスネットワークは、
DCバイアス電圧部と前記電力増幅器トランジスタの入力部との間に電気的に接続されるバイアスインピーダンス部と、
前記電力増幅器トランジスタの入力部と基準電圧部との間に電気的に接続されるシャントインピーダンス部と
を含む、請求項10の電力増幅器システム。 - 前記バイアスインピーダンス部は第1抵抗器を含み、
前記シャントインピーダンス部は直列された第2抵抗器及びキャパシタを含む、請求項12の電力増幅器システム。 - 前記シャントインピーダンス部はさらに、前記第2抵抗器及び前記キャパシタに直列されたインダクタを含む、請求項13の電力増幅器システム。
- 前記電力増幅器トランジスタは、前記入力部に対応するベースを有するバイポーラトランジスタである、請求項10の電力増幅器システム。
- 前記バイアスネットワークは、前記電力増幅器トランジスタの入力部と前記DCバイアス電圧部との間に電気的に並列に接続される抵抗器及びキャパシタを含む、請求項10の電力増幅器システム。
- 前記電力増幅器トランジスタは、互いに並列に動作する複数のトランジスタ要素として実装され、
前記バイアスネットワークは複数の抵抗器及び複数のキャパシタを含み、
前記複数の抵抗器はそれぞれが、前記DCバイアス電圧と前記複数のトランジスタ要素のうちの対応する一つへの入力部との間において、前記複数のキャパシタのうちの対応する一つに並列に接続される、請求項10の電力増幅器システム。 - 前記バイアスネットワークは、
前記DCバイアス電圧部と前記電力増幅器トランジスタへの入力部との間に電気的に接続されるキャパシタとインダクタとの直列結合体と、
前記キャパシタとインダクタとの直列結合体に並列された抵抗器と
を含む、請求項10の電力増幅器システム。 - 電力増幅器にバイアスをかける方法であって、
バイアス制御回路を使用してDCバイアス電圧を生成することと、
電力増幅器への入力として無線周波数入力信号を受信することと、
前記電力増幅器の電力増幅器トランジスタを使用して前記無線周波数入力信号を増幅することと、
前記電力増幅器のバイアスネットワークを使用して前記DCバイアス電圧により前記電力増幅器トランジスタの入力部にバイアスをかけることと
を含み、
前記バイアスをかけることは、前記バイアスネットワークのリアクタンスにより前記電力増幅器の位相応答を平坦にすることを含む、方法。 - 前記電力増幅器トランジスタの固有入力キャパシタンスを、前記バイアスネットワークのリアクタンスによって追跡することをさらに含む、請求項19の方法。
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US10879854B2 (en) | 2018-01-26 | 2020-12-29 | Skyworks Solutions, Inc. | Universal memory-based model for nonlinear power amplifier behaviors |
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TWI704767B (zh) * | 2019-09-02 | 2020-09-11 | 立積電子股份有限公司 | 放大裝置 |
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US11070171B2 (en) | 2021-07-20 |
US20240048101A1 (en) | 2024-02-08 |
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WO2020146534A1 (en) | 2020-07-16 |
KR20210124982A (ko) | 2021-10-15 |
US20200228064A1 (en) | 2020-07-16 |
CN113228501A (zh) | 2021-08-06 |
SG11202105159SA (en) | 2021-06-29 |
GB2593610B (en) | 2023-06-28 |
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US20220006426A1 (en) | 2022-01-06 |
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DE112020000387T5 (de) | 2021-09-23 |
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