JP2011523336A - ワイヤレス電力伝達の適応同調のための方法および装置 - Google Patents
ワイヤレス電力伝達の適応同調のための方法および装置 Download PDFInfo
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Abstract
Description
本出願は、
2008年6月11日に出願された「REVERSE LINK SIGNALING VIA RECEIVE ANTENNA IMPEDANCE MODULATION」と題する米国仮特許出願番号第61/060,735号と、
2008年6月11日に出願された「SIGNALING CHARGING IN WIRELESS POWER ENVIRONMENT」と題する米国仮特許出願番号第61/060,738号と、
2008年5月13日に出願された「ADAPTIVE TUNING MECHANISM FOR WIRELESS POWER TRANSFER」と題する米国仮特許出願番号第61/053,008号と、
2008年5月13日に出願された「EFFICIENT POWER MANAGEMENT SCHEME FOR WIRELESS POWER CHARGING SYSTEMS」と題する米国仮特許出願番号第61/053,010号と、
2008年6月11日に出願された「TRANSMIT POWER CONTROL FOR A WIRELESS CHARGING SYSTEM」と題する米国仮特許出願番号第61/060,741号と、
2008年5月13日に出願された「REPEATERS FOR ENHANCEMENT OF WIRELESS POWER TRANSFER」と題する米国仮特許出願番号第61/053,000号と、
2008年5月13日に出願された「WIRELESS POWER TRANSFER FOR APPLIANCES AND EQUIPMENTS」と題する米国仮特許出願番号第61/053,004号と、
2008年7月16日に出願された「WIRELESS POWER TRANSFER USING NEGATIVE RESISTANCE」と題する米国仮特許出願番号第61/081,332号と、
2008年5月13日に出願された「EMBEDDED RECEIVE ANTENNA FOR WIRELESS POWER TRANSFER」と題する米国仮特許出願番号第61/053,012号と、
2008年5月13日に出願された「PLANAR LARGE AREA WIRELESS CHARGING SYSTEM」と題する米国仮特許出願番号第61/053,015号と
の、米国特許法第119条(e)項に基づく優先権を主張する。
ヌル=送信コマンドなし
DD=デバイス番号
TT=デバイスタイプ
PP=要求される電力
rr=乱数
cc=チェックサム
NN=タイムスロットの開始、および
MM=タイムスロットの終了
表2の説明において、ヌルコマンドは、送信機が順方向リンク期間424中にメッセージングを送信しないことを意味する。行2において、送信機は新デバイス照会(NDQ)を送信する。受信デバイスが応答する場合、受信デバイスは、デバイス番号(デバイス番号が送信機によって割り当てられるまで、新しいデバイスでは0であるはずである)、電力要求、乱数、および受信応答中のすべてのデータビットのチェックサムとともに新デバイス応答(NDR)で応答する。
Claims (23)
- RF信号を発生するために、送信アンテナによって発生された近距離場放射を介して前記送信アンテナと結合するための受信アンテナと、
前記受信アンテナにおける不整合の程度を示す不整合信号を発生するために、前記受信アンテナに動作可能に結合された電圧定在波比検出器と、
前記不整合信号を分析し、それに応答して制御信号を発生するために、前記不整合信号に動作可能に結合されたコントローラと、
前記制御信号に動作可能に結合され、前記受信アンテナと前記RF信号との間に動作可能に結合された可変キャパシタネットワークであって、前記制御信号に応答して前記可変キャパシタネットワークのキャパシタンスを修正することによって前記受信アンテナの共振特性と前記可変キャパシタネットワークとを修正するための可変キャパシタネットワークと
を備えるワイヤレス電力受信機。 - 前記可変キャパシタネットワークが、T型ネットワークとL型ネットワークとπ型ネットワークとからなる群から選択されたネットワークを備える、請求項1に記載のワイヤレス電力受信機。
- 前記可変キャパシタネットワークが複数の可変キャパシタを備え、各可変キャパシタが前記制御信号のうちの制御信号によって制御され、各キャパシタのキャパシタンスがその対応する制御信号に応答して調整される、請求項1に記載のワイヤレス電力受信機。
- 前記複数の各可変キャパシタが、並列に動作可能に結合された複数のスイッチトキャパシタを備え、各スイッチトキャパシタが、直列に動作可能に結合されたスイッチとキャパシタとを備え、各スイッチトキャパシタが、それに動作可能に結合された前記制御信号に応答して前記可変キャパシタ中に選択的に含まれる、請求項3に記載のワイヤレス電力受信機。
- 前記複数の各可変キャパシタが、少なくとも1つのバラクタのためのバイアス制御として働く対応する制御信号に動作可能に結合された前記少なくとも1つのバラクタを備え、前記少なくとも1つのバラクタが、逆方向バイアスバラクタダイオードとMEMS可変キャパシタとからなる群から選択される、請求項3に記載のワイヤレス電力受信機。
- 受信アンテナに結合するための近距離場放射を発生させるための送信アンテナと、
前記送信アンテナにおける不整合の程度を示す不整合信号を発生するために、前記送信アンテナに動作可能に結合された電圧定在波比検出器と、
前記不整合信号を分析し、それに応答して制御信号を発生するために、前記不整合信号に動作可能に結合されたコントローラと、
前記制御信号に動作可能に結合され、前記送信アンテナとRF信号との間に動作可能に結合された可変キャパシタネットワークであって、前記制御信号に応答して前記可変キャパシタネットワークのキャパシタンスを修正することによって前記送信アンテナの共振特性と前記可変キャパシタネットワークとを修正するための可変キャパシタネットワークと
を備えるワイヤレス電力送信機。 - 前記可変キャパシタネットワークが、T型ネットワークとL型ネットワークとπ型ネットワークとからなる群から選択されたネットワークを備える、請求項6に記載のワイヤレス電力送信機。
- 前記可変キャパシタネットワークが複数の可変キャパシタを備え、各可変キャパシタが前記制御信号のうちの制御信号によって制御され、各キャパシタのキャパシタンスがその対応する制御信号に応答して調整される、請求項6に記載のワイヤレス電力送信機。
- 前記複数の各可変キャパシタが、並列に動作可能に結合された複数のスイッチトキャパシタを備え、各スイッチトキャパシタが、直列に動作可能に結合されたスイッチとキャパシタとを備え、各スイッチトキャパシタが、それに動作可能に結合された前記制御信号に応答して前記可変キャパシタ中に選択的に含まれる、請求項8に記載のワイヤレス電力送信機。
- 前記複数の各可変キャパシタが、少なくとも1つのバラクタのためのバイアス制御として働く対応する制御信号に動作可能に結合された逆方向バイアスダイオードを備える少なくとも1つのバラクタを備える、請求項8に記載のワイヤレス電力送信機。
- 受信アンテナに結合するための近距離場放射を発生させるための送信アンテナと、
増幅器に電力を供給するための電力信号をもつ増幅器であって、前記送信アンテナにRF信号を印加するための増幅器と、
前記増幅器に動作可能に結合され、前記電力信号を介して電流の変化を検出するための負荷感知回路であって、電流の前記変化に応答して負荷指示信号を発生する負荷感知回路と、
前記負荷指示信号に動作可能に結合され、前記負荷指示信号に応答して制御信号を発生するためのコントローラと、
前記制御信号に動作可能に結合され、前記送信アンテナと前記RF信号との間に動作可能に結合された可変キャパシタネットワークであって、前記負荷指示信号に応答して前記可変キャパシタネットワークのキャパシタンスを修正することによって前記送信アンテナの共振特性と前記可変キャパシタネットワークとを修正するための可変キャパシタネットワークと
を備えるワイヤレス電力送信機。 - 前記可変キャパシタネットワークが、T型ネットワークとL型ネットワークとπ型ネットワークとからなる群から選択されたネットワークを備える、請求項11に記載のワイヤレス電力送信機。
- 前記可変キャパシタネットワークが複数の可変キャパシタを備え、各可変キャパシタが前記制御信号のうちの制御信号によって制御され、各キャパシタのキャパシタンスがその対応する制御信号に応答して調整される、請求項11に記載のワイヤレス電力送信機。
- 前記複数の各可変キャパシタが、並列に動作可能に結合された複数のスイッチトキャパシタを備え、各スイッチトキャパシタが、直列に動作可能に結合されたスイッチとキャパシタとを備え、各スイッチトキャパシタが、それに動作可能に結合された前記制御信号に応答して前記可変キャパシタ中に選択的に含まれる、請求項13に記載のワイヤレス電力送信機。
- 前記複数の各可変キャパシタが、少なくとも1つのバラクタのためのバイアス制御として働く対応する制御信号に動作可能に結合された逆方向バイアスダイオードを備える少なくとも1つのバラクタを備える、請求項13に記載のワイヤレス電力送信機。
- 送信アンテナの近距離場内で結合モード領域を生成するために前記送信アンテナの共振周波数において電磁界を発生させることと、
実質的に前記共振周波数の近くで共振する受信アンテナを前記結合モード領域内に配設することと、
前記送信アンテナと前記受信アンテナとからなる群から選択されたチューナブルアンテナを、
前記チューナブルアンテナにおける電圧定在波比に応答して不整合信号を発生することによって前記チューナブルアンテナにおける不整合を検出することと、
前記チューナブルアンテナに動作可能に結合された可変キャパシタネットワークのキャパシタンスを調整することによって前記チューナブルアンテナの共振特性を修正することとによって適応同調させることと
を備える方法。 - 前記送信アンテナが第1のチューナブルアンテナを備え、前記受信アンテナが第2のチューナブルアンテナを備え、前記不整合を検出する動作と前記共振特性を修正する動作とが前記送信アンテナと前記受信アンテナとに適用される、請求項16に記載の方法。
- 前記可変キャパシタネットワークの前記キャパシタンスを調整することが、前記不整合信号に応答して複数のスイッチトキャパシタを選択的に使用可能にすることを備え、前記複数のスイッチトキャパシタが、前記可変キャパシタネットワークを形成するために動作可能に結合される、請求項16に記載の方法。
- 前記可変キャパシタネットワークの前記キャパシタンスを調整することが、前記不整合信号に応答して複数のバラクタをバイアスすることを備え、前記複数のバラクタが、前記可変キャパシタネットワークを形成するために動作可能に結合される、請求項16に記載の方法。
- 送信アンテナの近距離場内で結合モード領域を生成するために前記送信アンテナの共振周波数において電磁界を発生させるための手段と、
実質的に前記共振周波数の近くで共振する受信アンテナを用いて、前記結合モード領域内で前記共振周波数を受信するための手段と、
前記送信アンテナと前記受信アンテナとからなる群から選択されたチューナブルアンテナを、
前記チューナブルアンテナにおける電圧定在波比に応答して不整合信号を発生することによって前記チューナブルアンテナにおける不整合を検出するための手段と、
前記チューナブルアンテナに動作可能に結合された可変キャパシタネットワークのキャパシタンスを調整することによって前記チューナブルアンテナの共振特性を修正するための手段とを使用して適応同調させるための手段と
を備えるワイヤレス電力伝達システム。 - 前記送信アンテナが、前記不整合を検出するための前記手段と前記共振特性を修正するための前記手段とともに第1のチューナブルアンテナを備え、
前記受信アンテナが、前記不整合を検出するための前記手段と前記共振特性を修正するための前記手段とともに第2のチューナブルアンテナを備える、請求項20に記載のシステム。 - 前記可変キャパシタネットワークの前記キャパシタンスを前記調整することが、前記不整合信号に応答して複数のスイッチトキャパシタを選択的に使用可能にすることを備え、前記複数のスイッチトキャパシタが、前記可変キャパシタネットワークを形成するために動作可能に結合される、請求項20に記載のシステム。
- 前記可変キャパシタネットワークの前記キャパシタンスを調整することが、前記不整合信号に応答して複数のバラクタをバイアスすることを備え、前記複数のバラクタが、前記可変キャパシタネットワークを形成するために動作可能に結合される、請求項20に記載のシステム。
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