
	Where results make sense

Topic: Parabolic antenna

Related Topics

Parabolic microphone

Microphone

Sound recording

WiMAX

Fiber distributed data interface

Physical layer

Brisbane, Australia

Eavesdropping

	Satellite Receiving Antennas
		The parabolic antenna's ability to amplify signals is primarily governed by the accuracy of this parabolic curve.
		The feedhorn's illumination of the antenna must be attenuated or tapered to minimize noise contribution from the perimeter of the dish.
		The antenna's efficiency rating is the percentage of signal captured by the parabolic reflector that actually is received by the feedhorn.
	www.mlesat.com /antennas.html (2655 words)

	Parabolic Antenna Microwave Products - Professional heavy duty and lightweight parabolic dish microwave antenna ...
		The parabolic microwave antenna is carefully sealed with a radome of outdoor quality plastic and is terminated with an SMA (female) connector (inside the equipment housing).
		The parabolic antenna construction of this microwave antenna series is completely assembled with housing for electronic equipment.
		The parabolic dish antenna is carefully sealed with a radome of outdoor quality plastic and is terminated with a coaxial/waveguide transition with SMA (female) connector (inside the equipment housing).
	www.procom-dk.com /antenna/a0801-parabolic-antennas (463 words)

	definition of Parabolic Antenna
		The purpose of a parabolic antenna is to concentrate the energy coming into the antenna from a single direction to a high energy reception point.
		Parabolic or dish antennas therefore concentrate antenna energy that is arriving or being sent in a very singular direction.
		Therefore with this concentration of antenna energy, the antennas are said to be high gain and will be able to receive signals long distances - even from satellites - as long as the dish antenna is pointed in precisely the right direction for the signal to be sent or received.
	www.about-wireless.com /terms/parabolic-antenna.htm (136 words)

	Parabolic antenna / 2.4 GHz Parabolic Antennas / Wifi antenna / Grid / Solid / IEEE 802.11b / 802.11g / Wireless LAN ...
		Parabolic antenna / 2.4 GHz Parabolic Antennas / Wifi antenna / Grid / Solid / IEEE 802.11b / 802.11g / Wireless LAN (WLAN) / Bluetooth / Wimax
		These are high efficiency antennas whose gain figures approach the theoretical maximum for the individual curved surface area.
		These professional Antennas are outdoor weather sealed and individually tested gas-tight
	www.stelladoradus.com /2.4.ghz.parabolic.antennas.php (286 words)

	Parabolic Dish Antennas
		The parabolic dish antenna is also a great CPE unit for customers who are a greater distance from an access point.
		Parabolic dish antennas are designed to be used as a bridge antenna between two networks or for point-to-point communications.
		Parabolic dish antennas are provided with hardware for mast mounting and are available in either vertical or horizontal polarization.
	www.inpath.com /dishantennas.html (174 words)

	Parabolic Antenna Efficiency Calculator
		In our calculator, the diameter of the antenna is a spherical chord, cutting a section of the sphere.
		That section is our parabolic antenna dish in total.
		Antennae gain is the decibel gain of the incoming signal.
	www.csgnetwork.com /antennaparaboliceffcalc.html (130 words)

	Radar Basics
		The parabolic dish antenna is the form most frequently used in the the radar engineering of installed antenna types of.
		A dish antenna consists of one circular parabolic reflector and a point source situated in the focal point of this reflector.
		This is an idealised radar antenna and produces a pencil beam.
	www.radartutorial.eu /06.antennas/an10.en.html (376 words)

	Parabolic Reflector or Dish Antenna - Radio-Electronics.Com
		In many professional applications these parabolic reflectors or dish antennas are used for satellite as well as for radio astronomy and it is used in many microwave links, often being seen on radio relay towers and mobile phone antenna masts.
		The antenna consists of a radiating system that is used to illuminate a reflector that is curved in the form of a paraboloid.
		The parabolic reflector or dish antenna consists of a radiating element which may be a simple dipole or a waveguide horn antenna.
	www.radio-electronics.com /info/antennas/parabolic/parabolic_reflector.php (916 words)

	Competing antenna requirements for dual-band satellites
		For C-band, Figure 2 displays antenna gain and sidelobe level at 2 degrees for various parabolic antennas sizes common to the industry.
		Antenna assembly takes time, especially when there are a large number of antenna piece parts to worry about.
		When the feed of a parabolic antenna is displaced at an offset angle from the focal point, the main beam radiation pattern moves in the opposite direction at nearly the same angle.
	www.afcsat.com /dual.html (2383 words)

	WLANAntennas.com - Parabolic Dish
		Parabolic Dish Antenna is a parabolic dish desi...
		Parabolic Dish Antenna is a 20 dBi solid parabolic dish designed for the band of frequencies from 2400 to 2483 MHz.
		Parabolic Antenna is designed to be used as a bridge ante...
	www.wlanantennas.com /parobolic_antennas.htm (90 words)

	Parabolic & dish antenna
		Difference between this two antenna types is that parabolic antenna has metallic grid for reflector and dish has a solid reflector.
		This highly directional antenna type transmit/receives signals in a very narrow angle, so they are ideal for long distance and point to point network connections.
		It has a main reflector surface that is shaped like a paraboloid or sphere with an active element at its focus.
	www.wifi-antenna.com /parabolic_dish (103 words)

	Parabolic Discone antenna
		The gain vs. size of the Parabolic Discone grows like a traditional "Parabolic Dish." The difference is that gain in the Parabolic Discone causes the RF field to flatten out into a "pancake" at higher levels of gain.
		Henry O'Tani (G8OTA) suggested that the gain should be the square root of a "normal" parabolic dish, because of the spreading from one dimension to two dimensions caused by the cone (half the dB gain value).
		The downside is that antennas must be large in terms of wavelength for ray principles to apply.
	www.hamdomain.com /para-discone (1718 words)

	Parabolic Templat
		Parabolic reflectors also loose gain if your finished reflector varies much from the correct curve.
		Front to back ratio is a measurement of how well a directional antenna rejects interference from directions other than the desired direction.
		Front to back ratio with this antenna depends upon the size of the wire mesh you use to make the antenna.
	www.freeantennas.com /projects/template (1359 words)

	Actuator for TVRO parabolic antenna - Patent 4918363
		This invention relates to an antenna actuator having a new and significantly improved construction which is particularly advantageous for use in application to any antenna operated in an outdoor environment, such as a TVRO parabolic antenna.
		The embodiment of the invention in the drawings is demonstrated as applied to an actuator used in connection with and for the selective adjustment of an outdoor TVRO parabolic antenna.
		An adapter A plugged into and in threaded engagement with end wall 23 is utilized for the connection to the apparatus of the invention of a remote source of electrical energy to power the motor and for the operation of the interior controls of the system illustrated.
	www.freepatentsonline.com /4918363.html (4722 words)

	Parabolic WiFi Reflector Antenna \| Do-It-Yourself Wi-Fi Antennas Update
		A parabola can be used to concentrate radiation from an antenna located at its focus to form a beam in the same way that a searchlight reflector produces a light beam.The reflector creates a large surface area that the antenna uses to receive and transmit signals.
		A parabolic antenna will give you good range for your signal, however, they are more challenging to aim correctly due to the fact that they have a narrow beamwidth and signals arrive and exit at an angle.
		Determining the focal length of a parabolic dish and Calculating a Parabolic Dish’s focal point are useful.
	www.binarywolf.com /249/parabolic.htm (458 words)

	Use a Surplus Primestar Dish as an IEEE 802.11 Wireless Networking Antenna
		After deciding on a place to mount your antenna (which hopefully has a line of sight path to the access point or other IEEE 802.11 site), remove the apparatus at the feed position of the dish, saving the mounting hardware.
		This antenna is an offset fed dish, which means that the feed horn (our juice can) is not positioned as much in the way of an incoming signal, so it doesn't shadow the dish.
		This antenna modification is for the IEEE 802.11b networking protocol that operates at 2.4 GHz.
	www.wwc.edu /~frohro/Airport/Primestar/Primestar.html (1152 words)

	CSI - Parabolic Antenna
		Omnidirectional/ Tri-Band Omnidirectional / Dual Band Omnidirectional / Quad- Band Omnidirectional / PCS Indoor / Outdoor Dual Band Panel Antenna Yagi Antenna / 700 MHz / 11 dBi Yagi / 800-900 MHz / 11 dBi Yagi / 800-900 MHz / 14 dBi Yagi / PCS Parabolic Antenna Corner Reflector Antenna Wide Band/PCS
		Yagi Antenna / 700 MHz / 11 dBi
		For additional information on CSI products and/or services, please fill out the form below.
	www.cellularspecialties.com /cellular,Parabolic-Antenna,31.html (149 words)

	Parabolic Antenna on Alibaba.com - Find Parabolic Antenna manufacturers, suppliers, exporters, wholesalers, traders, ...
		Parabolic Antenna on Alibaba.com - Find Parabolic Antenna manufacturers, suppliers, exporters, wholesalers, traders, distributors, importers and more.
		Alibaba.com connects you directly to pre-qualified Parabolic Antenna manufacturers and exporters from China and around the world.
		Alibaba.com membership is 100 percent free for buyers, and with it, you get access to the world's largest B2B marketplace of manufacturers and exporters in the world for Parabolic Antenna.
	hotproducts.alibaba.com /manufacturers-exporters/Parabolic_Antenna.html (333 words)

	Off-set antenna for 1296 MHz (W6/PA0ZN)
		The implication of (a) and (b) are decreased antenna gain by blockage and higher antenna noise by scattering.
		It is also a basic property of a parabolic reflector that the total length of each reflected ray from the focal point to the aperture plane is a constant length.
		These properties cause the beam forming characteristic of a parabolic reflector antenna much the same as a flashlight produces a beam of light when the bulb filament is located at the focal point of the small mirrored parabolic reflector in the flashlight.
	www.w1ghz.org /10g/offset.htm (3091 words)

	WiFi Antenna \| High Gain 24db Directional Parabolic Grid 802.11i Antenna
		The high gain wifi antenna is an aluminum die cast which is then powder coat painted for added environmental protection.
		The durable wireless antenna is constructed of 2 separate die cast aluminum pieces which are assembled together during installation.
		If you purchase an omni antenna for your main "base station" antenna of your wifi system, it is best to purchase a directional antenna for your other systems for linking purposes.
	www.radiolabs.com /products/antennas/2.4gig/2.4-aluminum-parabolic.php (451 words)

	Comm/Radar: RF Technical Notes - Antenna Models
		The gain data is used to generate the 3-D models of antenna gain in STK/Advanced VO and to project 2-D contours onto the surface of the Earth or onto a hypothetical surface at a given altitude.
		Satellite antenna orientation may be different than the orientation of the satellite that is reading in the data.
		In contrast to the Comm/Radar parabolic model, the half power sensor is not uniformly illuminated (due to the choice of 70 degrees instead of 58.5 degrees).
	www.stk.com /resources/help/stk613/helpSystem/extfile/comm/CommRadarA-02.htm (1829 words)

	Saab Rosemount (Site not responding. Last check: )
		The large antenna diameter provides high antenna gain and a high signal to noise ratio.
		The Parabolic Antenna Gauge can also be used on tanks with floating roofs.
		The gauge is clamped in a 96 mm (3.78 in.) diameter hole, or welded in a 117 mm (4.61 in.) diameter hole.
	www.saabrosemount.com /tankgauging_component.aspx?ComponentID=16&ProductID=28 (232 words)

	Low Cost Wireless Network How-To - New Antenna Preparation (Site not responding. Last check: )
		The actual antenna is a normal half wave dipole with an integrated balun and is located inside the sealed plastic cover.
		You may also want to clean up and waterproof the square aluminum tube that connects the antenna to the reflector, as bugs tend to live inside it.
		Parabolic antenna gain can be found using this design utility.
	www.qsl.net /n9zia/wireless/page04.html (1119 words)

	[No title]
		The author- who first wrangled antenna as a radio ham in the 1960s- is a career educator with a flair for innovation, with extensive hands on WiFi experiences - www.manuka.orcon.net.nz has insights into "his" 2002 Lucent Orinoco PCMCIA driven Sardine Can Biquad antenna.
		PDAs of course normally have inbuilt antenna & hence the only viable way to boost weak WiFi reception is to gather signals & concentrate at a dish FP where the PDA (or cell phone!) is placed.
		Antennas for all Applications 3rd Ed.- Kraus and Marhefka The classic 'maths' text, but very readable with many diagrams.
	www.usbwifi.orcon.net.nz (4267 words)

	Off-set antenna for 1296 MHz (W6/PA0ZN)
		It is characteristic of the off-set parabolic reflector assymetric geometry to radiate cross polarized energy with linear polarization("") The cross polarized radiation increases with shorter focal length and larger off-set angle.
		The feed horn axis is however tilted to illuminate the choosen ares of the reflector surface and the center of the feed horn aperture (phase center) is located at the focal point of the paraboloid.
		The geometry of the off-set fed parabolic antenna may therefore be simply described as the intersection of a cone and a paraboloid, Figure l, shows various useful views of this geometry with simple formulae to calculate all necessary dimensions and angles.
	www.nitehawk.com /rasmit/offset.html (3062 words)

	Low Distribution Price. RadioWaves 31 dBi 3' Dual Polarized Parabolic Dish Antenna, 5.25-5.85 GHz Frequency Range. Mnf# ...
		Standard microwave antennas consist of a parabolic shaped reflector spun from a sheet of aluminum.
		These parabolic antennas have a narrow focused beam of energy and relatively high gain compared to many other types of antennas.
		These antennas will have a mounting system to attach the antenna to a pipe, tower leg and/or a specific radio, in some cases.
	www.winncom.com /moreinfo/item/WRSPD3-5.2/index.html (227 words)

	Amateur SETI Station: Parabolic Reflectors
		Though many other antenna types have been used successfully, by far the favored antenna for amateur SETI use is the parabolic reflector ("Dish").
		In other parts of the world they are harder to come by, and enterprising SETI League members have acquired surplus commercial telecommunications dishes, or even built their own from scratch.
		Additional information on various SETI antenna options, along with vendor links, may be found in the Antennas and Feedhorns chapter of The SETI League Technical Manual.
	www.setileague.org /hardware/blkdish.htm (603 words)

	[No title]
		Michael's template is aimed at being placed next to the standard antenna of an access point so that no modifications to the access point are required.
		My intention was to add an antenna to a Linksys WAP11 v2.2 and use it as a repeater.
		Either arrange for the original Linksys antenna to be mounted in the focal point of the parabolic dish or make my own dipole.
	www.nodomainname.co.uk /parabolic/parabolic.htm (660 words)

Try your search on: Qwika (all wikis)