JP2011010147A5 - - Google Patents
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- JP2011010147A5 JP2011010147A5 JP2009153017A JP2009153017A JP2011010147A5 JP 2011010147 A5 JP2011010147 A5 JP 2011010147A5 JP 2009153017 A JP2009153017 A JP 2009153017A JP 2009153017 A JP2009153017 A JP 2009153017A JP 2011010147 A5 JP2011010147 A5 JP 2011010147A5
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- JP
- Japan
- Prior art keywords
- millimeter wave
- antenna
- low
- reception
- converter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Description
なお、図３に示すように、地上デジタル放送信号は、ＵＨＦ帯受信アンテナ２によって受信されたＵＨＦ帯のテレビジョン放送信号のうちローパスフィルタ２４によって抽出することもできる。この場合、ローパスフィルタ２４の出力に含まれるＶＨＦ帯の信号を除去するために、ローパスフィルタ２４の出力はＶＨＦカットフィルタ２６を介し、混合器１７でＢＳ中間周波信号と１１０度ＣＳ中間周波信号と混合されて、コンバータ２０に供給される。 As shown in FIG. 3, the terrestrial digital broadcast signal can be extracted by the low-pass filter 24 from the UHF band television broadcast signal received by the UHF band receiving antenna 2 . In this case, in order to remove the VHF band signal included in the output of the low-pass filter 24, the output of the low-pass filter 24 passes through the VHF cut filter 26, and the mixer 17 outputs the BS intermediate frequency signal and the 110-degree CS intermediate frequency signal. It is mixed and supplied to the converter 20.
本発明の第２の実施形態のミリ波伝送システムは、図５に示すように中層または低層のマンション２８ａの各部屋に地上デジタルテレビジョン放送信号や、ＢＳ・ＣＳ１１０度信号を伝送しようとする場合のものである。ミリ波送信アンテナ２２及びコンバータ２０を備えた送信ユニット１８は、第１実施形態の送信ユニット１８と同一のもので、第１実施形態の送信ユニット１８と同様に中層または低層マンション２８ａの屋上に配置されている。ミリ波受信アンテナ３４及びコンバータ３６を備える受信ユニット３２も、第１の実施形態の受信ユニット３２と同一のもので、第１実施形態の第２のミリ波受信アンテナ３４ｄと同様に配置されている。即ち、最もミリ波送信アンテナ２２と離れているミリ波受信アンテナ３４は、ミリ波送信アンテナ２２とほぼ正対するように配置され、ミリ波送信アンテナ２２に近づくように上層階になるほど、ビーム中心軸から離れるように配置される。そして、ミリ波送信アンテナ２２に接近したもの、この実施形態では、ミリ波送信アンテナ２２に近い２つの階に設けたものは、２点鎖線で示すビーム角度ラインまたはそれよりも所定の角度、例えば±２度乃至４度だけ開いた角度ラインの外側に位置するように配置されている。このように配置することによって、ミリ波送信アンテナ２２に比較的近く電界強度の大きい階に設置されたミリ波受信アンテナ３４は、その階において最も電界強度の大きい中心軸よりも、電界強度の小さい位置に設置されている。従って、ミリ波送信アンテナ２２に近い位置にあるミリ波受信アンテナ３４での受信信号が供給される受信用のコンバータ３６の出力が飽和することはない。 The millimeter wave transmission system according to the second embodiment of the present invention is to transmit a terrestrial digital television broadcast signal or a BS / CS110 degree signal to each room of a middle or low-rise apartment 28a as shown in FIG. belongs to. The transmission unit 18 including the millimeter-wave transmission antenna 22 and the converter 20 is the same as the transmission unit 18 of the first embodiment, and is arranged on the roof of the middle- or low-rise apartment 28a as with the transmission unit 18 of the first embodiment. Has been. The reception unit 32 including the millimeter wave reception antenna 34 and the converter 36 is also the same as the reception unit 32 of the first embodiment, and is arranged in the same manner as the second millimeter wave reception antenna 34d of the first embodiment. . That is, the millimeter wave receiving antenna 34 that is the farthest from the millimeter wave transmitting antenna 22 is arranged so as to face the millimeter wave transmitting antenna 22 almost, and the beam center axis becomes closer to the upper floor so as to approach the millimeter wave transmitting antenna 22. It is arranged away from. Then, the one close to the millimeter wave transmission antenna 22, in this embodiment, provided on two floors close to the millimeter wave transmission antenna 22, is a beam angle line indicated by a two-dot chain line or a predetermined angle than that, for example, It is arranged so as to be located outside the angle line opened by ± 2 to 4 degrees. By arranging in this manner, the millimeter wave receiving antenna 34 installed on the floor relatively close to the millimeter wave transmitting antenna 22 and having a large electric field strength has a smaller electric field strength than the central axis having the largest electric field strength on that floor. In place. Therefore, the output of the receiving converter 36 to which the reception signal at the millimeter wave reception antenna 34 located near the millimeter wave transmission antenna 22 is supplied does not saturate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009153017A JP5483678B2 (en) | 2009-06-26 | 2009-06-26 | Millimeter wave transmission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009153017A JP5483678B2 (en) | 2009-06-26 | 2009-06-26 | Millimeter wave transmission system |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2011010147A JP2011010147A (en) | 2011-01-13 |
| JP2011010147A5 true JP2011010147A5 (en) | 2012-08-02 |
| JP5483678B2 JP5483678B2 (en) | 2014-05-07 |
Family
ID=43566271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2009153017A Expired - Fee Related JP5483678B2 (en) | 2009-06-26 | 2009-06-26 | Millimeter wave transmission system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP5483678B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110383941B (en) * | 2017-02-27 | 2023-03-28 | 艾尔文科学股份有限公司 | Millimeter wave communication through obstacles |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2762178B1 (en) * | 1997-04-14 | 2001-10-05 | Thomson Multimedia Sa | METHOD AND SYSTEM FOR DISTRIBUTING VIDEO SERVICES |
| JP2004056457A (en) * | 2002-07-19 | 2004-02-19 | Communication Research Laboratory | Wireless transmission system, radio transmission method, and antenna assembly |
| JP4204387B2 (en) * | 2003-05-30 | 2009-01-07 | 八木アンテナ株式会社 | Millimeter wave communication method |
-
2009
- 2009-06-26 JP JP2009153017A patent/JP5483678B2/en not_active Expired - Fee Related
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