JP2008005534A - 逆f強誘電体アンテナ - Google Patents
逆f強誘電体アンテナ Download PDFInfo
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- H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
- H03B5/18—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising distributed inductance and capacitance
- H03B5/1841—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising distributed inductance and capacitance the frequency-determining element being a strip line resonator
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- H03F1/56—Modifications of input or output impedances, not otherwise provided for
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/189—High-frequency amplifiers, e.g. radio frequency amplifiers
- H03F3/19—High-frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only
- H03F3/191—Tuned amplifiers
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
- H03J5/24—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection
- H03J5/246—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection using electronic means
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L1/00—Stabilisation of generator output against variations of physical values, e.g. power supply
- H03L1/02—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only
- H03L1/022—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only by indirect stabilisation, i.e. by generating an electrical correction signal which is a function of the temperature
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- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
- H03L7/16—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
- H03L7/18—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop
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- H—ELECTRICITY
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- 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
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- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
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Abstract
【解決手段】カウンターポイズ102と、セラミックブロック110と、逆F構造ラジエータ104と、バイアス電圧フィード金属インレイと、ギャップキャパシタ112と、バイアス電圧ブロックキャパシタとを備え、強誘電体材料の比誘電率に応答する周波数で共振する一体型セラミック逆F強誘電体アンテナ。
【選択図】図2
Description
本出願は、米国特許仮出願第60/283,093号(2001年4月11日出願)の利益を主張し、この出願は、参考のため、本明細書中に援用される。さらに、本出願は、Stanley S.Toncichによる「Ferro−Electric Tunable Filter」と称される米国特許出願第09/904,631号(2001年7月13日出願)、Stanley S.Toncichによる「Tunable Ferro−Electric Multiplexer」と称される米国特許出願第09/912,753号(2001年7月24日出願)、Stanley S.Toncichによる「Low Loss Tunable Ferro−Electric Device and Method of Characterization」と称される米国特許出願第09/927,732号(2001年8月8日出願)、Stanley S.Toncichによる「Tunable Matching Circuit」と称される米国特許出願第09/927,136号(2001年8月10日出願)、Stanley S.Toncichによる「Tunable Planar Capacitor」と称される米国特許出願第10/044,522号(2002年1月11日出願)、Stanley S.Toncichによる「Tunable Isolator Matching Circuit」と称される米国特許出願第10/077,654号(2002年2月14日出願)、Stanley S.Toncichによる「Antenna
Interface Unit」と称される米国特許出願第10/076,171号(2002年2月12日出願)、Stanley S.Toncichによる「Tunable Antenna Matching Circuit」と称される米国特許出願第10/075,896号(2002年2月12日出願)、Stanley S.ToncichおよびTim Forresterによる「Tunable Low Noise
Amplifier」と称される米国特許出願第10/075,727号(2002年2月12日出願)、Stanley S.Toncichによる「Tunable Power Amplifier Matching Circuit」と称される米国特許出願第10/075,507号(2002年2月12日出願)、およびStanley S.ToncichおよびAllen Tranによる「Ferroelectric Antenna and Method for Tuning Same」と称される米国特許出願アトーニードケット番号第DIS 00147号(2002年4月4日出願)に関し、上記の出願は、参考のため、本明細書中に援用される。
(1.発明の分野)
本発明は、概して、無線通信アンテナに関し、より具体的には、強誘電体キャパシタを用いてチューニングされる逆Fアンテナに関する。
誘電体材料の使用を取りいれるいくつかのタイプの従来のアンテナ設計がある。一般的には、アンテナによって生成される場(field)の一部分が誘電体を通じてラジエータからカウンターポイズ(グラウンド)に戻る。このアンテナは、周波数で共振するようにチューニングされ、ラジエータおよび誘電体の波長は、共振周波数で最適な関係を有する。最も一般的な誘電体は空気であり、1の比誘電率を有する。他の材料の比誘電率は、空気を基準にして定義される。
れ得る場合は有利である。
本発明は、強誘電体材料を誘電体として用いることによって、複数の周波数帯域にわたって動作するようにチューニングされる逆Fアンテナを記載する。より具体的には、FEキャパシタは、逆Fラジエータの電気的長さを改変するために用いられる。
図1は、逆F強誘電体アンテナの平面図である。アンテナ100は、第1の平面にカウンターポイズ102を、およびカウンターポイズ102の上に位置する逆F構造ラジエータ104を第2の平面に備える。
た特性インピーダンスを有する。典型的には、アンテナインターフェース114は、動作周波数における、ある電圧定在波比(WSWR)または2:1よりも小さいように50Ωになるように設計される。換言すると、アンテナインターフェースは、約10デシベル(dB)よりも大きい反射損失を有する。アンテナインターフェース114は、マイクロストリップ、ストリップ線、同軸または任意の従来の伝送線とインターフェース接続するように設計され得る。
000ミクロンの範囲の厚さを有する厚膜で形成される。
上述のように、アンテナ100は、ギャップキャパシタ強誘電体材料800の比誘電率に応答する周波数で共振する。
Claims (8)
- 一体型セラミック逆F強誘電体アンテナ(100)であって、
カウンターポイズ(102)と、
該カンターポイズ(102)の上に位置するセラミックブロック(110)と、
該セラミックブロック(110)において金属のインレイとして形成された逆F構造ラジエータ(104)であって、該カウンターポイズ(102)に接続された第1の端部(106)と第2の端部(108)とを有する逆F構造ラジエータ(104)と、
該セラミックブロック(110)におけるバイアス電圧フィード(300)金属インレイであって、該ラジエータの第2の端部(108)に隣接するバイアス電圧フィード(300)金属インレイと、
可変比誘電率を有する、該セラミックブロック(110)に埋め込まれた埋め込み強誘電体材料(800)と、該ラジエータの第2の端部(108)から形成された第1の端子(306)と、該バイアス電圧フィード(300)から形成された第2の端子(308)とから形成されたギャップキャパシタ(112)と、
該カウンターポイズ(102)に結合された第1のバイアス端子と、該バイアス電圧フィード(300)に結合された第2のバイアス端子とを有するバイアス電圧ブロックキャパシタ(310)と
を備え、
該アンテナ(100)は、強誘電体材料(402)の比誘電率に応答する周波数で共振する、アンテナ(100)。 - 前記アンテナ(100)は、前記共振周波数から独立した所定のほぼ一定のゲインを有する、請求項1に記載のアンテナ(100)。
- 前記ギャップキャパシタ(112)は、
第1の固定比誘電率を有する第1の固定誘電体層(400a)をさらに備えた、請求項1に記載のアンテナ(100)。 - 前記バイアス電圧フィード(300)は、前記ギャップキャパシタ(112)に電圧を印加し、
該ギャップキャパシタ(112)の前記可変比誘電率は、該印加電圧に応答して変化する、請求項1に記載のアンテナ(100)。 - 前記埋め込み強誘電体材料(800)は、前記第1の固定誘電体層(400a)と前記第1および第2の端子(306、308)との間に挿入される、請求項3に記載のアンテナ(100)。
- 第2の固定誘電体層(400b)をさらに備え、前記第1の固定誘電体層(400a)は、前記埋め込み強誘電体材料(800)と前記第1の端子(306)との間に挿入され、該第2の固定誘電体層(400b)は、前記第2の端子(308)と該埋め込み強誘電体材料(800)との間に挿入される、請求項3に記載のアンテナ(100)。
- 前記バイアス電圧ブロックキャパシタ(310)は、第2のチューニング可能な強誘電体キャパシタであり、
前記バイアス電圧フィード(300)は、該第2のチューニング可能なキャパシタ(310)に電位を印加し、
前記アンテナ(100)は、前記ギャップキャパシタ(112)の第1の可変比誘電率と組み合わせられた該第2のチューニング可能な強誘電体キャパシタ(310)の第2の可変比誘電率に応答する前記共振周波数で共振する、請求項1に記載のアンテナ(100)。 - 第1のチューニング可能な強誘電体キャパシタ(112)と前記ラジエータ(104)との組み合わせは、前記共振周波数の1/4波長の有効な電気的波長を有する、請求項1に記載のアンテナ(100)。
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US28309301P | 2001-04-11 | 2001-04-11 | |
US09/904,631 US6690251B2 (en) | 2001-04-11 | 2001-07-13 | Tunable ferro-electric filter |
US09/912,753 US6639491B2 (en) | 2001-04-11 | 2001-07-24 | Tunable ferro-electric multiplexer |
US09/927,732 US6690176B2 (en) | 2001-04-11 | 2001-08-08 | Low-loss tunable ferro-electric device and method of characterization |
US09/927,136 US6825818B2 (en) | 2001-04-11 | 2001-08-10 | Tunable matching circuit |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2002581630A Division JP4452444B2 (ja) | 2001-04-11 | 2002-04-09 | 逆f強誘電体アンテナ |
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Publication Number | Publication Date |
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JP2008005534A true JP2008005534A (ja) | 2008-01-10 |
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Family Applications (22)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2002581541A Expired - Fee Related JP4077322B2 (ja) | 2001-04-11 | 2002-04-02 | チューナブル強誘電性フィルタ |
JP2002584476A Withdrawn JP2004524778A (ja) | 2001-04-11 | 2002-04-02 | チューナブル整合回路 |
JP2002581616A Pending JP2004530360A (ja) | 2001-04-11 | 2002-04-02 | チューナブルマルチプレクサ |
JP2002582012A Pending JP2004536287A (ja) | 2001-04-11 | 2002-04-02 | 低損失チューニング可能強誘電体デバイスおよび特性決定の方法 |
JP2002584427A Pending JP2005502227A (ja) | 2001-04-11 | 2002-04-04 | 強誘電体アンテナおよびそれを調整するための方法 |
JP2002581679A Expired - Fee Related JP4666564B2 (ja) | 2001-04-11 | 2002-04-08 | チューナブル電圧制御型発振器 |
JP2002581630A Expired - Fee Related JP4452444B2 (ja) | 2001-04-11 | 2002-04-09 | 逆f強誘電体アンテナ |
JP2002581614A Expired - Fee Related JP4031367B2 (ja) | 2001-04-11 | 2002-04-10 | チューナブル位相シフタおよびそれに対するアプリケーション |
JP2005344385A Pending JP2006109512A (ja) | 2001-04-11 | 2005-11-29 | チューナブルマルチプレクサ |
JP2006223573A Pending JP2006320026A (ja) | 2001-04-11 | 2006-08-18 | チューナブル強誘電性フィルタ |
JP2007211986A Pending JP2007295635A (ja) | 2001-04-11 | 2007-08-15 | 強誘電体スロットアンテナ |
JP2007211848A Pending JP2008005534A (ja) | 2001-04-11 | 2007-08-15 | 逆f強誘電体アンテナ |
JP2007211849A Expired - Fee Related JP4286304B2 (ja) | 2001-04-11 | 2007-08-15 | 逆f強誘電体アンテナ |
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