JP5603072B2 - 効率をさらに良くし、コンパクトな大きさのアンテナを維持するためにアンテナのパラメータを順応良く制御するための方法及び装置。 - Google Patents
効率をさらに良くし、コンパクトな大きさのアンテナを維持するためにアンテナのパラメータを順応良く制御するための方法及び装置。 Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- 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
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/44—Transmit/receive switching
- H04B1/48—Transmit/receive switching in circuits for connecting transmitter and receiver to a common transmission path, e.g. by energy of transmitter
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
- H01Q1/243—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q11/00—Electrically-long antennas having dimensions more than twice the shortest operating wavelength and consisting of conductive active radiating elements
- H01Q11/12—Resonant antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
- H01Q9/045—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with particular feeding means
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- 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
- H04B1/02—Transmitters
- H04B1/04—Circuits
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- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Transmitters (AREA)
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Description
は、下に記載のような操作の欠点を被っている。
出力電力は、受信デバイスと効果的なコミュニケーションを許容するためにデバイス素子により制御されている。例えば、携帯端末のPAの出力電力は、端末が基地局のサービスエリアで動くとき、携帯基地局と効果的にコミュニケーションできるように制御されている。
近接誘電体(人の体、テーブルなど)の存在によりアンテナの共振を維持するためのチューニングすること、アンテナの物理的容積を減少させるためにバンド-選択可能なチューニング(CDMAではサブバンドはない。)、操作周波数と対比して、より一定の(より好ましく調和する)インピーダンスを与えるためにチューニイグすること、といった上記で記載した機能は、チューニングする構成要素を含めることのすべて実現可能な副産物である。
上述したように、出力電力に伴って変化する。信号経路でインピーダンス変化に順応して、どんな場合でもインピーダンスが周波数に伴って変化することを認識するために、アンテナインピーダンスは、パワーアンプPAEを改善するインピーダンスに変換される。特に、最適なインピーダンスは、アンテナに供給される信号周波数と、PAからの指令RF出力電力の機能として生成されるポイントの場所から選択される。最適なインピーダンスは、パワーアンプに最適なPAEで操作することを許容しており、すなわち、信号のクリッピングや飽和することなく利用可能な供給電圧/電流を使用する出力信号を生成している。
このアプローチの利点は、送信及び受信経路においてより小さな損失でかつ、より大きなバンド幅にできることである。
Claims (15)
- 複数の周波数バンドにおいて信号を送信および受信可能なコミュニケーション装置であって、
少なくとも二つの共振周波数に制御可能なアンテナと、
入力信号を操作し、電力に関するパラメータが関連付けられた送信用の第1の信号を前記アンテナに供給するパワーアンプであって、前記電力に関するパラメータに対応した制御可能な出力電力を発生し、該出力電力に応じてパワーアンプの出力インピーダンスを変化させるパワーアンプと、
前記アンテナが、該アンテナの入力インピーダンスを決定し、それによって前記パワーアンプが動作するところのインピーダンスを決定する制御可能な構造的要素を含み、該構造的要素が前記パワーアンプの効率を高めるために制御されることと、
前記電力に関するパラメータ、または前記パワーアンプの出力電力、あるいは前記パワーアンプの出力インピーダンスに応じて前記アンテナの構造的要素を制御するとともに、前記少なくとも二つの共振周波数のうちから一つのアンテナ共振周波数を確立するアンテナ制御器とを備えることを特徴とするコミュニケーション装置。 - 請求項1のコミュニケーション装置において、
前記アンテナ制御器は、前記コミュニケーション装置の操作パラメータに応答し、
前記操作パラメータは、前記電力に関するパラメータを表わすことを特徴とするコミュニケーション装置。 - 請求項1のコミュニケーション装置において、
前記アンテナ制御器は、前記電力に関するパラメータ、または前記パワーアンプの出力電力、あるいは前記パワーアンプの出力インピーダンスに応じて、前記アンテナの構造的要素を制御することによって、前記パワーアンプの効率、又は、前記パワーアンプの電力付加効率を改善することを特徴とするコミュニケーション装置。 - 請求項1のコミュニケーション装置において、
該コミュニケーション装置が基地局と双方向に通信可能であり、前記基地局が、前記パワーアンプに所望の電力パラメータを持った前記第1の信号を供給させるための指令を前記コミュニケーション装置に出すことを特徴とするコミュニケーション装置。 - 請求項1のコミュニケーション装置において、
前記アンテナ制御器は、前記アンテナの構造的要素を制御することにより前記パワーアンプの効率を第1の効率値と第2の効率値との間に出現させ、パワーアンプの効率が前記第1の効率値である場合に、パワーアンプの効率が前記第2の効率値に変化するように前記構造的要素を制御することを特徴とするコミュニケーション装置。 - 請求項1に記載のコミュニケーション装置において、
前記アンテナの構造的要素は、集中リアクティブ素子又は分散リアクティブ素子を含むことを特徴とするコミュニケーション装置。 - 請求項1に記載のコミュニケーション装置において、
前記電力に関するパラメータは、パワーアンプの出力電力、コミュニケーション装置の操作周波数、又は、前記パワーアンプと前記アンテナの間の導電性パスにおける電圧定在波比を含むことを特徴とするコミュニケーション装置。 - 請求項7に記載のコミュニケーション装置において、
前記アンテナ制御器が、所望の前記電圧定在波比が達成されるように、前記アンテナの構造的要素を制御することを特徴とするコミュニケーション装置。 - 請求項1に記載のコミュニケーション装置において、
前記電力に関するパラメータは、ピークDC電流を含むことを特徴とするコミュニケーション装置。 - 請求項1に記載のコミュニケーション装置において、
前記アンテナ制御器は、まず、前記アンテナ共振周波数を所望の周波数に制御し、それから、前記アンテナの入力インピーダンスを決めるために前記アンテナの構造的要素を制御することを特徴とするコミュニケーション装置。 - 請求項1に記載のコミュニケーション装置において、
前記アンテナ制御器は、前記少なくとも二つの共振周波数のうちから所望の一つのアンテナ共振周波数を確立するために、コミュニケーション装置によって送信される信号の周波数を表わす信号に応答することを特徴とするコミュニケーション装置。 - 請求項1に記載のコミュニケーション装置において、
前記アンテナ制御器が、前記電力に関するパラメータまたは前記アンテナ共振周波数を表す制御信号に応答することを特徴とするコミュニケーション装置。 - 請求項1に記載のコミュニケーション装置において、
前記アンテナ制御器は、前記アンテナ共振周波数を確立するために、アンテナ有効電気的長さ、インダクタンスまたはキャパシタンスを制御することを特徴とするコミュニケーション装置。 - 複数の周波数バンドにおいて信号を送信および受信可能なコミュニケーション装置を動作させるための方法であって、
複数の共振周波数に制御可能なアンテナを用意する段階と、
入力信号をパワーアンプにて受信し、パワーアンプにより入力信号を操作して、電力に関するパラメータが関連付けられた送信用の第1の信号を前記アンテナに供給する段階であって、パワーアンプが前記電力に関するパラメータに対応した制御可能な出力電力を発生し、該出力電力に応じてパワーアンプの出力インピーダンスを変化させる段階と、
前記電力に関するパラメータ、または前記パワーアンプの出力電力、あるいは前記パワーアンプの出力インピーダンスに応じて前記アンテナの構造的要素を制御することで、前記アンテナの入力インピーダンスを決定し、それによって前記パワーアンプが動作するところのインピーダンスを決定して、パワーアンプ効率を高めるとともに、前記アンテナに複数の共振周波数のうちから一つのアンテナ共振周波数を確立する段階とを備えることを特徴とする方法。 - 請求項14の方法において、
前記パワーアンプの出力電力を制御するために、基地局がコミュニケーション装置に信号を供給する段階をさらに含み、該信号に応答して前記アンテナの構造的要素を制御することを特徴とする方法。
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US11/421,878 | 2006-06-02 | ||
US11/421,878 US7834813B2 (en) | 2004-10-15 | 2006-06-02 | Methods and apparatuses for adaptively controlling antenna parameters to enhance efficiency and maintain antenna size compactness |
PCT/US2007/070347 WO2007143616A2 (en) | 2006-06-02 | 2007-06-04 | Methods and apparatuses for adaptively controlling antenna parameters to enhance efficiency and maintain antenna size compactness |
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JP5603072B2 true JP5603072B2 (ja) | 2014-10-08 |
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JP (1) | JP5603072B2 (ja) |
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US7834813B2 (en) | 2010-11-16 |
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KR101525426B1 (ko) | 2015-06-03 |
WO2007143616A2 (en) | 2007-12-13 |
KR20090057350A (ko) | 2009-06-05 |
US20060281423A1 (en) | 2006-12-14 |
WO2007143616A3 (en) | 2009-02-19 |
CN101496222A (zh) | 2009-07-29 |
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