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Topic: Omnidirectional antenna

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	Omnidirectional antenna -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-10-09)
		An omnidirectional antenna is an (An electrical device that sends or receives radio or television signals) antenna system which radiates maximum power uniformly in all directions.
		The perfectly omnidirectional antenna is the (additional info and facts about isotropic antenna) isotropic antenna,
		(Graphical representation (in polar or cartesian coordinates) of the spatial distribution of radiation from an antenna as a function of angle) radiation patterns
	www.absoluteastronomy.com /encyclopedia/o/om/omnidirectional_antenna.htm (127 words)

	Radiall : omnidirectional antenna,cable assembly,tunable connector,rack and panel,TNC connectors,master cord,optical ... (Site not responding. Last check: 2007-10-09)
		Pigtailing omnidirectional antenna Radiall design and rectangular connectors a wide range of specialist WLAN for the alignment of coax to active mil-spec connectors passive omnidirectional antenna optical components.
		omnidirectional antenna installation is eased as the active device can multipurpose connectors freely around the jack and an audible click omnidirectional antenna ensures of a good and secure connection.
		Using omnidirectional antenna couplers can dramatically improve RFDC bus performance, since it will decrease considerably the risk of transmission interference.In addition of time saving advantage, airframe connector utilization patch antennas QMA omnidirectional antenna low loss master cord optimization of panel density since no torque wrench is needed.
	www.radiall.com /vdocportal/html/radiall/omnidirectional_antenna.htm (1124 words)

	omnidirectional antenna
		A radio antenna capable of transmitting and/or receiving radio signals from all directions of the sky which are visible from its location, simultaneously.
		Omnidirectional receiving antennas will be used in the next generation of instruments used for SETI and the study of short-duration or fast-changing natural sources.
		Omnidirectional transmitting antennas, if intended for communications with other technological civilizations in space, would require immense power in order to produce detectable signals at interstellar distances (see beacon, interstellar).
	daviddarling.info /encyclopedia/O/omnidir.html (171 words)

	TSCM Test Equipment - Antenna - Signal Acquisition
		A TSCM antenna is normally operated on a tripod until a spectral anomaly is identified.
		The antenna being used must be operated in both a horizontal and vertical polarized position, and also in a 45-degree diagonal position for optimal signal detection.
		This antenna may be used alone, or with a 36 inch dish to intercept and detect many of the 900 MHz to 2.8 GHz covert video eavesdropping devices.
	www.tscm.com /tmdeantenna.html (1558 words)

	Cisco - Cisco Aironet Antenna Reference Guide (Site not responding. Last check: 2007-10-09)
		Patch antennas are designed to mount flat against a wall or ceiling, and ceiling-mount antennas are equipped with a drop-ceiling cross-member attachment.
		This antenna is normally mounted on a mast and is vertically polarized.
		This mount permits the yagi antenna to be mounted to a flat surface or a mast, and then be adjusted in both horizontal and vertical angles.
	www.cisco.com /warp/public/cc/pd/witc/ao350ap/prodlit/agder_rg.htm (6565 words)

	Omni-directional Antenna 2.4 GHz for 802.11b (WiFi) WLAN
		For long term installation outdoors it would be prudent to house the antenna and N connection in a plastic food container (check that it is safe for use in a microwave oven first, and be aware that some plastics effect signal strength).
		When we have used this antenna it has been sufficient to screw it to the cable and affix the cable securely; this is using URM67 coaxial cable which is 10mm outer diameter and resists bending.
		In use on a flat field, using two of these antennae attached to pcmcia 802.11b cards via cable and pigtails, we were able to maintain an 11Mb/s network at between 400 to 500 metres with clear line of sight.
	flakey.info /antenna/omni/quarter (1197 words)

	Easy Homemade 2.4 Ghz Omni Antenna - Gumph
		Most of the designs on the web for 2.4 GHz omni antenna seem to involve brass tubing and lmr-400 cable, none of which are readily available to me. I then found a coax only design for 444Mhz that was based on the same idea.
		Each sector of the antenna needs to be a 1/2 wavelength long multiplied by the velocity factor of the cable.
		When building the antenna, the exact length of each piece of RG-213 is not that important, it is the overall length of each sector that counts.
	wireless.gumph.org /articles/homemadeomni.html (2568 words)

	TriBand APXtender Indoor Rubber Duck Omnidirectional Antenna (Site not responding. Last check: 2007-10-09)
		The TriBand APXtender Indoor Rubber Duck Omnidirectional Antenna is used to extend the range of indoor access points or client bridges in 2.4GHz, 5.3GHz and 5.8GHz wireless LAN environments.
		The antenna is a "TriBand" rather than "Wide Band" antenna design in that it will reject out of band signals between the bands of interest.
		Antennas are available in a variety of connectors to fit most wireless radio equipment.
	shopping.netsuite.com /s.nl/c.403468/sc.7/category.17/.f (126 words)

	Cisco Aironet Antenna Reference Guide [Cisco Aironet Antennas and Accessories] - Cisco Systems (Site not responding. Last check: 2007-10-09)
		This antenna reference guide is intended to provide information to assist in understanding the issues and concerns of antennas used with a Cisco® Aironet® wireless LAN system, or wireless bridge system.
		An antenna rating is typically to the gain of an isotropic or dipole antenna.
		Patch antennas are designed to mount flat against a wall or ceiling, and ceiling-mount antennas are equipped with a drop-ceiling cross-member attachment.
	www.cisco.com /en/US/products/hw/wireless/ps469/products_data_sheet09186a008008883b.html (5264 words)

	Local Antenna's
		The MetroStar® is omnidirectional for install-and-forget convenience -- no rotator system needed, and has a built-in preamplifier to boost signal strength -- up to six times the received signal on VHF and nine times on UHF.
		This antenna is easy to install with hand tools on any antenna mast or optional light-duty antenna mount.
		Antenna coated with a high quality polymer to prevent surface oxidation in any type weather.
	www.videostation.net /local.htm (558 words)

	10 GHz Omnidirectional Antenna (Site not responding. Last check: 2007-10-09)
		The antenna is fed at the centre by a small probe in the centre of the broad face, rather like any other co-axial to waveguide transition.
		The antenna was set up on a tripod with receiver and the vertical and horizontal radiation patterns were measured.
		The antenna was also measured with a vertically polarised source to confirm that it really was working as a horizontally polarised antenna.
	www.qsl.net /g3yki/omni.htm (488 words)

	Principle of Directional or Omnidirectional Antenna (Site not responding. Last check: 2007-10-09)
		Antenna Architectures for CDMA Integrated Wireless Access Networks...
		An Overview of Smart Antenna Technology for Mobile Communications Systems...
		Patent 5307507: Antenna arrangement system capable of reducing co-channel interf...
	www.scienceoxygen.com /gadget/118.html (234 words)

	Omnidirectional antenna scheme (US5923304)
		An antenna arrangement comprising at least 4 upright omnidirectional antenna is disclosed.
		By providing at least 4 omnidirectional antenna in a irregular spaced apart arrangement, spatial diversity is provided, at any distant point from the antennas, by at least 3 antennas.
		A cellular radio communications base station antenna arrangement comprising at least four upright omnidirectional antennas each omnidirectional antenna being connected via transmission lines to a transmitter and receiver, wherein the omnidirectional antenna are arranged such that the axes of the antenna are spaced apart in a irregular fashion.
	www.delphion.com /details?&pn=US05923304__ (236 words)

	VHF/UHF Omnidirectional Antenna
		Mars VHF/UHF Omnidirectional Antenna is a ruggedized, broadband antenna covering the VHF/UHF band (100 to 570 MHz).
		The antenna is a modified, skeleton disk - conical type antenna, designed for use in conditions where rugged construction and wide bandwidth are necessary.
		The antennas' excellent phase characteristics allow them to be easily used in DF applications as well as in array configurations for obtaining directive patterns and additional gain.
	www.mars-antennas.com /vhfuhf.htm (77 words)

	Model VOBA-I 2-30 MHz Omnidirectional Antenna
		This antenna design can be used for short range groundwave circuits up to approximately 100 miles, and is well suited for naval shore-to-ship communication.
		The antenna is ruggedly designed and will withstand harsh environments such as high wind, ice, and snow.
		The antenna is a fixed station antenna which covers various frequency bands without requiring any frequency tunings or frequency adjustments.
	www.antennaproducts.com /VOBA1detail.htm (151 words)

	collinear antenna (Site not responding. Last check: 2007-10-09)
		quality antenna designed to take hurricane force winds, it is very feasible to built a collinear antenna for average use...
		The collinear antenna was historically used by repeater sites, stacking various 1/2 wave dipole elements on top of each...
		In telecommunication, a collinear antenna array is an array of dipole antennas mounted in such a manner...
	yellowpages-gd.com /articles/46/collinear-antenna.html (530 words)

	Omnidirectional Antenna 150-1618 Installation
		Mount the antenna on a short piece of mast suspended from a roof support by a 4-inch wall-mount bracket (Cat.
		Be sure the antenna is not in a position where it would easily fall or otherwise be damaged.
		Downlead wire from the antenna to the grounding block and the mast ground wire should be secured to the house with stand-off insulators, spaced from four to six feet apart.
	support.radioshack.com /support_video/doc6/6815.htm (588 words)

	Omnidirectional CB Antenna Recalled By Granada Electronics (Site not responding. Last check: 2007-10-09)
		If contact is made by the antennas with an electrical power line while being installed or taken down, the antennas have the potential for severe or fatal shock.
		About 500 antenna-related electrocutions have been estimated to have occurred since 1976 as a result of CB antennas coming into contact with electrical power lines while the antennas are being put up or taken down.
		The affected antennas are being removed from dealers and replaced.
	www.cpsc.gov /cpscpub/prerel/prhtml86/86007.html (367 words)

	antenna
		Therefore, antenna radiation patterns or plots are a very important tool to both the antenna designer and the end user.
		The collinear antenna was historically used by repeater sites, stacking various 1/2 wave dipole elements on top of each other for increased gain connected by some equipment to correct for phase error between the elements of the array.
		The antenna is about 3 dB more responsive in the direction of the slot than it is off the rear of the antenna.
	www.wlan.org.uk /antenna-page.html (4195 words)

	Sputnik Accessories
		The antenna’s beam characteristics are perfect for mouting above dropped ceilings in order to cover a large area such as a conference room, hotel room floor, restaurant, or lobby area.
		The antenna is certified to work with the Sputnik AP 200 and 250 and comes with its own mounting bracket for easy installation.
		The beam characteristics of the antenna are perfect for mounting and pointing in order to cover a defined area, such as all rooms in a hallway, all boats on a pier, or all slips at an RV park.
	www.sputnik.com /products/aps/accessories.html (820 words)

	IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, VOL. /.4, NO. 1, JANUARY 1996 A Millimeter-Wave Omnidirectional ...
		Abstract: A new millimeter-wave omnidirectional dielectric rod metallic grating antenna is investigated theoretically and experimentally, in this paper.
		The radiation characteristics of the antenna are carefully investigated by a rigorous formulation for the TE0-mode and TM0r-mode excitation in the Ka-band frequency range.
		Based on the analysis, an omnidirectional antenna excited by the TE0 mode is designed and measured.
	citeseer.ist.psu.edu /524646.html (318 words)

	U.S. Pregrant 20030231138 - Dual-band directional/omnidirectional antenna (Site not responding. Last check: 2007-10-09)
		An antenna having a dual-band driven element and a second antenna element simultaneously produces a directional radiation pattern at an upper frequency and an omnidirectional radiation pattern at a lower frequency.
		An antenna array includes the dual-band driven element and a second driven antenna element with a reflector and/or a director in a Yagi-Uda configuration.
		An antenna array includes the dual-band driven element with a reflector or with a reflector and a director in a Yagi-Uda configuration.
	cxp.paterra.com /uspregrant20030231138.html (234 words)

	5.2 Ghz Omnidirectional Collinear Antenna (Site not responding. Last check: 2007-10-09)
		The Antenna is UV stabilized and uses Plenum rated RJ58 coax cable.
		The ETS 5.2 GHz 05-5200-V Omnidirectional Collinear antenna is extremely high performance with a peak gain of 6 dBi and impedance of 50 ohms.
		It is a linear polarized antenna and operates at temperatures ranging from -40 to 70 degrees Celsius.
	www.rfinet.net /news_release_093003a.shtml (249 words)

	A VERY Nice War-driving Setup (Site not responding. Last check: 2007-10-09)
		A common upgrade is the ever popular magnet-mounted 5dBi omnidirectional antenna available from places like Hyperlink and FAB.
		I had a second 8dBi omnidirectional antenna attached to my Linksys WAP11--something I had simply done to experiment with the effectiveness of diversity.
		The vehicle we'll be attaching this antenna to is a Ford F150 Supercrew 4x4 truck.
	www.geekspeed.net /~beetle/download/wardrive (1196 words)

	Times Antenna - 2.4GHz&5.8GHz Antenna,Wifi Antenna,Antenna accessories (Site not responding. Last check: 2007-10-09)
		TQC Mobile Antenna is designed for mobile communication of the automobile with 3.6-7.8 dBi
		Omnidirectional Antenna is specially designed for immobile wireless switching-in system with 12 dBi
		Paraboloid Antenna is a kind of hign-gain microwave antenna.
	www.timesantenna.com (133 words)

	Omnidirectional CB Antenna Recalled by Shakespeare (Site not responding. Last check: 2007-10-09)
		The agency estimated, however, that approximately 45-50 individuals were electrocuted each year through 1981 as a result of CB antennas coming into contact with electrical power lines while the antennas are being put up or taken down.
		Each of these recalled antennas bears a three letter code located on the bottom of its metal sleeve and on the identification label on the end of the packaging tube as follows: CHF, CHE, CHD, CHC, CHB, CHA, CHL, CHM.
		As a normal practice, individuals planning to install or take down a CB antenna should first contact their local power company for advice.
	www.cpsc.gov /cpscpub/prerel/prhtml84/84022.html (427 words)

	2.4 GHz 5 dBi 802.11b 802.11g WLAN and Bluetooth® Compatible Blade Omni-Directional Wi-Fi® Antenna
		This omnidirectional antenna is an ideal choice for connecting handhelds and notebooks to public Hot Spots, where the additional gain and optimized antenna placement provide longer range and a more robust link.
		The antenna is typically mounted using the included Velcro® fastener, or with double-sided tape.
		This antenna features an integral 19 inch low loss cable terminated with the appropriate radio connector, eliminating the need for a separate radio pigtail adapter.
	www.hyperlinktech.com /web/re05e.php (290 words)

	Wi-Fi antenna shows diversity every way: News from Huber+Suhner
		Dual slant polarised antennas enable improved system performance by deploying diversity without the need for two separate antennas, and associated fixing etc.
		This latest addition to Huber+Suhner's wide portfolio of products overcomes this issue and enables the antennas to be installed where omnidirectional coverage is required.
		More, the compact 3.5dBi antenna has been specifically designed to be easily integrated into external street furniture to reduce opposition from planning authorities.
	www.electronicstalk.com /news/hub/hub117.html (213 words)

	Cisco Aironet 12 dBi High Gain Omnidirectional Antenna (AIR-ANT24120) - Buy Online
		This 12-dBi high gain omnidirectional antenna operates in the 2400-2500 MHz band and is designed for use outdoors.
		To achieve this pattern, the antenna should be mounted clear of any obstructions to the sides of the radiating element.
		Since the antenna has vertical gain, it is very important to mount the antenna in a vertical (not leaning) position for optimal performance.
	www.computersix.com /460038.htm (327 words)

	Winegard Metrostar, omnidirectional TV antenna, Bi-Directional , Sensar TV antenna, small antennas that can be ...
		Winegard Metrostar, omnidirectional TV antenna, Bi-Directional, Sensar TV antenna, small antennas that can be installed in attic or on roof top
		The MetroStar® antenna is perfect for homes, apartments, mobile homes, condos, townhouses and offices.
		for 68 channel Sensar® antenna provides excellent reception in areas where stations are located in different directions.
	www.starkelectronic.com /womni.htm (376 words)

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