请问哪位有手机接收数字电视的天线啊?

yellowtoot · 发表于 2006-3-31 09:57:00

具体频率指标见附件[upload=jpg]UploadFile/2006-3/06331@52RD_手机电视天线指标.jpg[/upload][br]+5 RD币

yellowtoot · 发表于 2006-3-31 09:59:00

手机外挂USB dongle, dongle的外形如图所示[upload=jpg]UploadFile/2006-3/06331@52RD_手机电视天线1.jpg[/upload]

yellowtoot · 发表于 2006-3-31 10:01:00

合上之后的外形,
L波段的天线为内置, 估计只能用陶瓷天线, 请知情者或天线厂家回贴,谢谢
[upload=jpg]UploadFile/2006-3/06331@52RD_手机电视天线2.jpg[/upload]

yellowtoot · 发表于 2006-3-31 10:04:00

USB dongle外接天线时的形状,

估计只能用拉杆天线, 频率实在是太低啦,
如果哪位知情, 或天线厂家请回贴,谢谢啦.
[upload=jpg]UploadFile/2006-3/06331@52RD_手机电视天线3.jpg[/upload]

yellowtoot · 发表于 2006-3-31 10:17:00

应用框图如下[upload=jpg]UploadFile/2006-3/06331@52RD_手机电视天线框图.jpg[/upload]

KarLoo · 发表于 2006-3-31 10:30:00

<H5 0cm 0cm 0pt">ANTENNA PROPOSAL– MODEL 618-8</H5> <H2 0cm 0cm 0pt; tab-stops: 8.0cm">DIPOLE DATA</H2>Dipole model number: 618Total number of panels: 8Dipole type: half wavelengthSingle Dipole Gain 0 dBd (2.15 dBi)Panel input power rating: 2.5 kW per dipoleDipole input connector: 1 x 7-16 DIN flangePanel radomes: NoRadomeColour: N/A<H2 0cm 0cm 0pt; tab-stops: 1.0cm center 5.0cm 7.0cm 9.0cm 11.0cm"> </H2><H2 0cm 0cm 0pt; tab-stops: 1.0cm center 5.0cm 7.0cm 9.0cm 11.0cm">ANTENNA SYSTEM DATA</H2>Panel orientation: Direction 70° Number of Dipoles (bays) 8 Vertical spacing between bays 1.3 metres (centre to centre) ANTENNA MOUNTING DATA (refer Specifications for mechanical data)Antenna mounting: Side mounted to triangular tower (east face). The mounting pole is assumed to be mounted approx. <st1:chmetcnv w:st="on" TCSC="0" NumberType="1" Negative="False" HasSpace="False" SourceValue=".5" UnitName="m">0.5m</st1:chmetcnv> off the tower and the dipoles are mounted approx. <st1:chmetcnv w:st="on" TCSC="0" NumberType="1" Negative="False" HasSpace="True" SourceValue=".45" UnitName="m">0.45 m</st1:chmetcnv> from the pole.Antenna system assembly (pre-installation): Assembled on siteAntenna brackets, clamps: IncludedTower Interface steelwork (mounting pole): Not included<H2 0cm 0cm 0pt; tab-stops: 8.0cm">POWER DIVIDER NETWORK DATA</H2>VSWR Tuner: IncludedCable Test section for antenna measurement: Not IncludedInput Power Divider: Equal 8 wayBay power dividers: N/ABranch feeder cables Approx. 10 metres, LCF12-50J<H2 0cm 0cm 0pt; tab-stops: 8.0cm">FACTORY TEST DATA</H2>Factory tests: VSWR, Phasing, pressurization, VRP (calc. from phasing). <H5 0cm 0cm 0pt">ANTENNA SPECIFICATIONS</H5> Model: 618-8<st1:place w:st="on"><st1:PlaceName w:st="on">Frequency</st1:PlaceName> <st1:PlaceType w:st="on">Range</st1:PlaceType></st1:place>: 174-230 MHzOperating Frequencies <st1:chmetcnv w:st="on" TCSC="0" NumberType="1" Negative="False" HasSpace="False" SourceValue="11" UnitName="C">11C</st1:chmetcnv> (211.648 MHz),
11D (213.360 MHz)Polarisation: VerticalImpedance: 50 ohmVSWR: <1.2:1 across operating freq. rangeInput Power Rating: > 5 kW DMBInput Connector: 1-5/<st1:chmetcnv w:st="on" TCSC="0" NumberType="1" Negative="False" HasSpace="False" SourceValue="8" UnitName="”">8”</st1:chmetcnv> EIA flangeAntenna Gain: 10.80 dBd (12.95 dBi)Beam Tilt: 0.7 degNull fill: Approx. 15% of first nullOperating Temperature: -10<st1:chmetcnv w:st="on" TCSC="0" NumberType="1" Negative="True" HasSpace="False" SourceValue="50" UnitName="C">-50°</st1:chmetcnv>CMaximum Windspeed: <st1:chmetcnv w:st="on" TCSC="0" NumberType="1" Negative="False" HasSpace="True" SourceValue="240" UnitName="km">240 km</st1:chmetcnv>/hrFrontal Wind Load (<st1:chmetcnv w:st="on" TCSC="0" NumberType="1" Negative="False" HasSpace="False" SourceValue="50" UnitName="m">50m</st1:chmetcnv>/sec) 1.7 kNApprox. Height: <st1:chmetcnv w:st="on" TCSC="0" NumberType="1" Negative="False" HasSpace="True" SourceValue="10" UnitName="m">10 m</st1:chmetcnv>Approx. Weight: <st1:chmetcnv w:st="on" TCSC="0" NumberType="1" Negative="False" HasSpace="True" SourceValue="140" UnitName="kg">140 kg</st1:chmetcnv>Pressurisation: 10-35 kPa[br]+5 RD币

yellowtoot · 发表于 2006-3-31 10:57:00

发个图给看看吧

wayne · 发表于 2006-3-31 16:52:00

可以参考NEC N940。那个电视天线时日本人设计的。电视天线分两部分，一部分若熔在机壳上，另外一部分坐在金属笔上，插入金属笔后就是一个完整的电视天线。很不错。可惜我这里没有图。[br]+1 RD币

yellowtoot · 发表于 2006-3-31 20:39:00

给个链接也行啊

yellowtoot · 发表于 2006-4-3 08:42:00

图为NEC手机电视天线, 就是个拉杆天线

yellowtoot · 发表于 2006-4-3 08:43:00

但不知道它的频率是多少

[upload=jpg]UploadFile/2006-4/0643@52RD_NEC940天线.jpg[/upload][br]+1 RD币

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[讨论] 请问哪位有手机接收数字电视的天线啊?

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