JP4708470B2 - ミリ波送受信システム - Google Patents
ミリ波送受信システム Download PDFInfo
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- JP4708470B2 JP4708470B2 JP2008289927A JP2008289927A JP4708470B2 JP 4708470 B2 JP4708470 B2 JP 4708470B2 JP 2008289927 A JP2008289927 A JP 2008289927A JP 2008289927 A JP2008289927 A JP 2008289927A JP 4708470 B2 JP4708470 B2 JP 4708470B2
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/14—Reflecting surfaces; Equivalent structures
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/0006—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices
- H01Q15/0013—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices said selective devices working as frequency-selective reflecting surfaces, e.g. FSS, dichroic plates, surfaces being partly transmissive and reflective
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
- H01Q19/104—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces using a substantially flat reflector for deflecting the radiated beam, e.g. periscopic antennas
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/02—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/90—Non-optical transmission systems, e.g. transmission systems employing non-photonic corpuscular radiation
Description
(ミリ波送受信システム100の概略)
図1は、ミリ波送受信システム100の概略を表す構成例である。
次に、送信装置1の具体的な設置方法について説明する。
次に、図2(a)(b)、図3(a)(b)を用い、反射板41の具体的な構成、及び設置方法について説明する。
次に、図4(a)(b)を用い、受信装置2の設置方法について説明する。
次に、反射板41の反射面43の面積について説明する。
次に、図5を用い、送信装置1、受信装置2の構成例について説明する。
無線信号〔信号〕:fLO1−fse=fIF1〔周波数〕
次に、送信変換器3a(アップコンバート手段、アップコンバータ)に入力された中間周波数多重信号71dは、周波数ミキサ301に入力されると共に、m次(m:2以上の整数)のマルチプライア7によって生成された局部発振信号71e(周波数:fLO2)も周波数ミキサ301に入力されることにより、アップコンバートされる。そして、アップコンバートされた中間周波数多重信号71dは、フィルタ302により、上側波帯のみが通過され、ミリ波パワーアンプ303によって増幅され、無線多重信号72として、送信アンテナ4によって、送信装置1から送信される。
無線信号〔信号〕:fLO2+fIF1=fLO2+(fLO1−fse)
=(2m+1)fLO1−fse〔周波数〕
なお、本実施の形態では、m=5(2m+1=11)とする。
[(2m+1)fLO1‐fse]−[(2m+1)fLO1]
=fse
このように、受信変換器11から出力される信号74aとして、信号fseを得ることができる。
次に、送信装置1及び受信装置2の別の回路例を示す。
無線信号のダウンコンバート:(fLO2+fIF1)−fLO3
=fLO2−fLO3+(fLO1−fse)
=(2m+1)fLO1−fLO3−fse
次に、受信装置2bは、第2のダウンコンバータとしての基準信号再生/周波数変換回路12とを備えている。つまり、受信変換器11bから出力された第2の中間周波数多重信号74bは、基準信号再生/周波数変換回路12に入力される。
[(2m+1)fLO1−fLO3]−[(2m+1)fLO1−fLO3−fse]
=fse
受信装置2と同様に、受信装置2bでダウンコンバートされた信号は、送信装置1に入力される一系列の信号fseが復元され、送信装置1中の基準信号である周波数fLO1の周波数偏差、位相雑音特性には全く関係しない。
次に、図7、図8を用い、第2の実施形態について説明する。
次に、図9、図10(a)(b)、図11(a)(b)を用い、第3の実施形態について、図1の第1の実施形態と比較し異なるところについて説明する。
また、図11(a)(b)に示すように、第2の面46に支持柱421を設け、支持柱421によって、第2の面46と天井89とを接続してもよい。
2、2b 受信装置
4 送信アンテナ
5 レベル調整器・電源
12 基準信号再生/周波数変換回路(第2ダウンコンバート手段)
14 受信アンテナ
18 レベル検出器(検知手段)
31 TV(表示装置)
32 TVラック
34 支持軸
41、41a、41b、41c 反射板
43、43c 反射面
89 天井
100、200、300 ミリ波送受信システム
110 低雑音増幅器(増幅手段)
120 2端子型ミキサ(ダウンコンバート手段)
201 周波数ミキサ(変調手段)
Claims (16)
- ミリ波の送受信を行うミリ波送受信システムにおいて、
上記ミリ波を送信する送信装置と、
上記送信装置が送信したミリ波を反射する反射板と、
上記反射板が反射したミリ波を受信する受信装置とを備え、
上記反射板は、上記ミリ波を反射する反射面として金属板、金属シートまたは金属膜を有し、
上記受信装置は、回転軸を有する表示装置の上記回転軸上であり、上記反射板が反射したミリ波を受信するように配置されており、
上記回転軸は、上記表示装置の水平軸と直交する方向に延び、上記表示装置の表示画面を水平方向に回転させることを特徴とするミリ波送受信システム。 - 上記反射板は、上記反射面を有する第1の面と、当該第1の面に対して傾斜して配される第2の面とを有することを特徴とする請求項1に記載のミリ波送受信システム。
- 上記反射板は、上記第1の面と上記第2の面との間隔を一定に維持するスペーサを備えることを特徴とする請求項2に記載のミリ波送受信システム。
- 上記送信装置は、上記ミリ波を送信するための指向性を有する送信アンテナを備え、
上記受信装置は、上記反射板が反射したミリ波を受信するための指向性を有する受信アンテナを備えることを特徴とする請求項1に記載のミリ波送受信システム。 - 上記反射板が配置される面と、上記受信装置との距離をhとし、上記受信アンテナの半値幅をθとした場合、
上記反射板の反射面の面積は、1/2 波長の平方より大きく√2・(2h・tanθ)・(2h・tanθ)より小さいことを特徴とする請求項4に記載のミリ波送受信システム。 - 上記送信アンテナの指向角は、上記受信アンテナの指向角以上であることを特徴とする請求項4又は5に記載のミリ波送受信システム。
- 上記反射面は、凹形状であることを特徴とする請求項1〜6の何れか1項に記載のミリ波送受信システム。
- 上記受信装置は、回転軸を有する表示装置の表面かつ上記回転軸上に配置されていることを特徴とする請求項1〜7の何れか1項に記載のミリ波送受信システム。
- 上記受信アンテナの指向方向は、鉛直方向であることを特徴とする請求項4〜6の何れか1項に記載のミリ波送受信システム。
- 上記受信装置は、表示装置の表示画面に対する背面側に配置されていることを特徴とする請求項9に記載のミリ波送受信システム。
- 上記受信アンテナは、誘電体からなるレンズアンテナであることを特徴とする請求項4に記載のミリ波送受信システム。
- 上記送信装置は、
放送用の無線信号を取得し、取得した無線信号を、無線信号を変調するための基準信号によって変調することにより変調信号を生成する変調手段を備え、
上記変調手段が生成した変調信号と上記基準信号とをアップコンバートした送信信号を上記ミリ波に重畳して、上記送信アンテナから送信し、
上記受信装置は、
上記送信アンテナから送信された送信信号を上記受信アンテナで受信し、
受信した送信信号を増幅する増幅手段と、
上記増幅手段によって増幅された上記送信信号に含まれる基準信号に基づいて、上記変調信号をダウンコンバートすることにより上記変調信号を復調するダウンコンバート手段とを備えることを特徴とする請求項4に記載のミリ波送受信システム。 - 上記送信装置は、
放送用の無線信号を取得し、取得した無線信号を、無線信号を変調するための基準信号によって変調することにより変調信号を生成する変調手段を備え、
上記変調手段が生成した変調信号と上記基準信号とをアップコンバートした送信信号を上記ミリ波に重畳して、上記送信アンテナから送信し、
上記受信装置は、
上記送信アンテナから送信された送信信号を上記受信アンテナで受信し、
受信した送信信号を増幅する増幅手段と、
上記増幅手段によって増幅された送信信号をダウンコンバートする第1ダウンコンバート手段と、
上記第1ダウンコンバート手段によってダウンコンバートされた送信信号に含まれる基準信号に基づいて、上記送信信号に含まれる変調信号をダウンコンバートすることにより、上記変調信号を復調する第2ダウンコンバート手段とを備えることを特徴とする請求項4に記載のミリ波送受信システム。 - 上記受信装置は、上記送信信号から受信した上記送信信号の一部を取得し、当該取得した送信信号の信号レベルを検出し、当該検出した信号レベルに応じた音量または音調を有する音を発する検知手段をさらに備えることを特徴とする請求項12または13に記載のミリ波送受信システム。
- 上記送信装置は、複数の放送用信号を多重化して受信し、当該受信した放送用信号を上記送信アンテナから、上記ミリ波に重畳して送信信号として送信することを特徴する請求項4に記載のミリ波送受信システム。
- 上記反射面の縦×横の長さは、15cm×15cmであることを特徴とする請求項1に記載のミリ波送受信システム。
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JP2008289927A JP4708470B2 (ja) | 2008-11-12 | 2008-11-12 | ミリ波送受信システム |
CN200910220867.7A CN101741465B (zh) | 2008-11-12 | 2009-11-06 | 毫米波收发系统 |
US12/615,395 US8412130B2 (en) | 2008-11-12 | 2009-11-10 | Millimeter wave transceiving system and reflecting plate |
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JP2008289927A JP4708470B2 (ja) | 2008-11-12 | 2008-11-12 | ミリ波送受信システム |
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JP2010118845A JP2010118845A (ja) | 2010-05-27 |
JP4708470B2 true JP4708470B2 (ja) | 2011-06-22 |
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CN101741465A (zh) | 2010-06-16 |
US8412130B2 (en) | 2013-04-02 |
JP2010118845A (ja) | 2010-05-27 |
US20100119234A1 (en) | 2010-05-13 |
CN101741465B (zh) | 2014-04-16 |
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