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Topic: Hidetsugu Yagi

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	Yagi antenna - Encyclopedia Glossary Meaning Explanation Yagi antenna (Site not responding. Last check: 2007-10-12)
		Yagis are directional along the axis perpendicular to the dipole in the plane of the elements, from the reflector through the driven element and out the director(s); if you hold out your arms to form a dipole and have the reflector behind you, you would receive signals with maximum gain from in front of you.
		Yagi antennas which include one or more director elements, which, by virtue of their being arranged at approximately a quarter-wavelength mutual spacing and being progressively slightly shorter than a half wavelength, direct signals of increasingly higher frequencies onto the active dipole.
		Yagi published the first English-language article on the antenna in 1928 and it came to be associated with his name.
	www.encyclopedia-glossary.com /en/Yagi-antenna.html (507 words)

	Hidetsugu Yagi Yagi Antenna (Site not responding. Last check: 2007-10-12)
		The Yagi Antenna is a directional antenna invented by Dr. Hidetsugu Yagi of Tohoku Imperial University and his assistant, Dr. Shintaro Uta.
		Yagi stated that he and his colleagues had tested a system using a magnetron at 40 cm along with a wave projector antenna to achieve a range of about 1 km.
		Yagi was born in 1886 in Osaka, Japan, and graduated in engineering from Tokyo Imperial University in 1909.
	members.aon.at /oe1cwj/literature/hidetsugu_yagi_yagi_antenna.htm (969 words)

	Yagi antenna (Site not responding. Last check: 2007-10-12)
		Yagi antenna is made from the array of dipoles (elements) parallel to each other.
		Yagi may be protect from weather conditions with a cylinder tube or pipe.
		The Yagi-Uda antenna was invented in 1926 by Hidetsugu Yagi and Shintaro Uda in Tohoku University, Japan.
	www.wifi-antenna.com /yagi (153 words)

	From Longwire to Yagi
		The Yagi, emblem of the classic beam, is a multielement directive array, basically designed from a dipole, the driven element, completed with a parasitic element called the reflector, and additional directors usually arranged in the horizontal plane.
		The gain of a Yagi is thus directly depending on the length of elements and the number of directors.
		Like all antennas, Yagis can be stacked either in broadside (side by side) or collinear (usually superposed) fashion to improve directivity and gain, and reduce as much as possible side lobes in which the energy is lost.
	www.astrosurf.org /lombry/qsl-antenna4.htm (2858 words)

	Krists "Pow" Krilovs microwave radio page > Cigar antenna (Site not responding. Last check: 2007-10-12)
		Yagi is a type of endfire multielement array invented in 1920s by two Japanese university professors Hidetsugu Yagi and Shinoto Uda.
		Yagi array consists of a single driven element, and parasitic elements - reflector and directors.
		Cigar antenna is a cavity-fed yagi in which dipole and reflector elements are replaced by a probe-excited cavity which launches a wave along the slow-wave structure formed by the director array.
	pow.za.net /cigar.html (426 words)

	Deadprogrammer's Cafe
		This hideous yagi antenna is on a top of one of the old art deco buildings on 46th street.
		You can extend the range of wi-fi networks with a yagi made out of Pringles can (gotta build one) and I've heard of a guy that made a yagi for his cell phone, so that he could access weak cell networks while biking across America.
		Yagi's statue and here's an iteresting quote that I've found: "US War Crimes Commission witnessed that Professor Hidetsugu Yagi was the first Japanese "to speak proudly of his work instead of denying it all."
	www.deadprogrammer.com /?m=200302 (850 words)

	IEEE History Center - Directive Short Wave Antenna, 1924
		In these laboratories, beginning in 1924, Professor Hidetsugu Yagi and his assistant, Shintaro Uda, designed and constructed a sensitive and highly-directional antenna using closely-coupled parasitic elements.
		The antenna system, utilizing a driven element with closely coupled parasitics (usually a reflector and one or more directors) for short-wave work, was first described by S. Uda, a professor at Tohuku University in Japan, in 1926, in the IEEJ (Japan).
		A colleague, Professor H. Yagi, collaborated in the developmental work and published the more widely read English version in the June 1928 IRE Proceedings.
	www.ieee.org /organizations/history_center/milestones_photos/yagi.html (447 words)

	Dr. Yagi Remembered
		Hidetsugu Yagi (1886 ~ 1976) whose contributions have had an enormous effect on the lives of so many people around the globe for so many years.
		The antenna, which is effective in the higher-frequency ranges, has been important for radar, television, and amateur radio The familiar Yagi TV antenna is a Yagi-Uda array, named after these two Japanese electrical engineers: Hidetsugu Yagi, who invented it in 1928, and Shintaro Uda, who perfected it for television reception in 1954.
		However, Dr. Yagi’s work was concentrated for its use as a wartime radar antenna which could be mounted on a periscope to be raised and lowered.
	www.antennex.com /Stones/st0899/yagistan.htm (4287 words)

	Antennas and Accessories for Surveillance Security Cameras, CCTV equipment
		Yagis are directional along the axis perpendicular to the dipole in the plane of the elements, from the reflector through the driven element and out the director(s); if one holds out one's arms to form a dipole and has the reflector behind oneself, one would receive signals with maximum
		Yagi antennas which include one or more director elements, which, by virtue of their being arranged at approximately a quarter-
		The introduction of traps is not without cost—due to their nature, they reduce the overall bandwidth of the antenna and overall efficiency of the array on any given frequency, and radically affects its response in the desired direction.
	www.wecusurveillance.com /site/897581/page/435721 (634 words)

	Cellular Yagi Antenna (Site not responding. Last check: 2007-10-12)
		Yagi and Panel Directional Antennas High gain Yagi and High gain...
		These antennas were the design of two Japanese people, Hidetsugu Yagi and...
		Yagi antennas focus the transmit and receive power in a single direction.
	www.ringtones.communications-deals.info /cellular/cellular-yagi-antenna.html (289 words)

	Yagi & W1MDZ Dialetric Antenna Experiments
		Yagi explained they needed a radar antenna that could be raised and lowered with the periscope and be impervious to salt water so as not to de-tune.
		As one can imagine, Dr. Yagi’s periscope mounted radar antenna for submarines had to deal with the many environmental problems that any submarine has when diving and remaining at deep-sea levels.
		One of the things that came out of the discussions that took place between Stan and Dr. Yagi was that the Germans were pretty far advanced in the area of ceramics RandD and its possible application to dielectric technology.
	www.antennex.com /preview/Folder03/Aug5/stan.htm (1334 words)

	The history of amateur radio - 8
		In the '30s, in Japan, Dr. Hidetsugu Yagi of Tohoku Imperial University and his assistant, Dr. Shintaro Uda developed a new design of antenna combining a simple structure with high performance.
		This is only a few years later, in 1940, that Dr Yagi and Uda registered their invention at the Japan Patent Office.
		It is said that Japanese realized the true value of the Yagi during World War II when it was discovered that the invention was used as a radar antenna by the Allied Forces.
	www.astrosurf.org /lombry/qsl-ham-history8.htm (1538 words)

	Antennas Direct \| Yagi Antenna Selection
		The Yagi antenna is credited to Hidetsugu Yagi, a Japanese physicist who pioneered the field of directive antennas.
		Designed to improve the gain of the antenna concentrated in one direction, Yagi antennas use elements called directors and reflectors.
		To increase the frequency bandwidth of Yagi style antennas, we increase the diameter of the antenna conductors.
	www.antennasdirect.com /yagi_antenna.html (218 words)

	Production Group
		The antenna has its roots in Japan, where Professor Hidetsugu Yagi and Shintaro Uda were the first people to design and construct an antenna (Sivowitch 1).
		The Yagi-Uda antenna, or Yagi, was first applied to radios, point-to-point communications, radar, and televisions (Sivowitch 1).
		In 1932, the Yagi came to the United States and was placed on televisions before the end of the decade.
	academic.udayton.edu /BradHume/phone/prod/antenna.htm (1254 words)

	Antennas Direct \| FAQs about HD Television Antennas
		A: The Yagi antenna is credited to Hidetsugu Yagi (although not the original inventor), A Japanese physicist.
		The Yagi was designed to improve the gain of the antenna concentrated in one direction.
		One way to increase the frequency bandwidth of a simple antenna like a Yagi, is to increase the diameter of the antenna conductors.
	www.antennasdirect.com /faqs.html (1562 words)

	Conservative Japanese Textbook Authors Reject Asian Criticism
		Their two new school texts, which are used in only a handful of schools, have been strongly criticized by many Chinese, Koreans and even some Japanese as glossing over the brutality of Japan's colonial legacy in Asia.
		The organization's chairman, Hidetsugu Yagi, called the uproar over the textbooks an over-reaction.
		Yagi says Marxism still has a tremendous influence over teachers' unions in Japan and thus history textbooks tend to depict a class struggle where the government is always bad and the people are always right.
	www.voanews.com /english/2005-05-10-voa21.cfm (447 words)

	Italian radar
		The study and experimentation went on almost side by side in the United States, England, Germany, French, Japan, and Italy even though in each research laboratory the researcher had not explicitly formulated the final goal of their researches, and more specifically what was later called RADAR (RAdio Detecting And Ranging).
		Beginning in 1916, a series of experiments utilized Yagi antennae begun.
		This gave light to the possibility of their utilization in the naval arena to detect the presence of metallic objects at a great distance.
	www.regiamarina.net /others/radar/radar_one_us.htm (1955 words)

	Articles - Electric power transmission (Site not responding. Last check: 2007-10-12)
		Hidetsugu Yagi attempted to devise a system for wireless power transmission.
		His work however, led to the invention of the yagi antenna.
		Another form of wireless power transmission has been studied for transmission of power from solar power satellites to the earth.
	www.deluxez.com /articles/Power_grid (2334 words)

	Yagi antenna (Site not responding. Last check: 2007-10-12)
		From left to right, the elements mounted on the boom are called the reflector, driven element, director.
		A Yagi-Uda Antenna, commonly known simply as a Yagi antenna, is an antenna consisting of an array of a dipole and additional parasitic elements.
		Yagis are directional along the axis perpendicular to the dipole in the plane of the elements, from the reflector through the driven element and out the director(s); if one holds out one's arms to form a dipole and has the reflector behind oneself, one would receive signals with maximum gain from in front of oneself.
	www.guideofpills.com /Yagi_antenna.html (965 words)

	Tex Swann's Antennas in Action, May 1999
		The hard-backed Physical Design Of Yagi Antennas by David B. Leeson W6QHS looks at Yagi antennas from the mechanical aspect more than from the electrical viewpoint.
		The different viewpoint on the subject of Yagi antennas (originally described in the mid 1920s by Shintaro Uda and Hidetsugu Yagi) is that this book tells you how to build a better and stronger antenna that will withstand almost anything nature can throw at it.
		After chapters on antenna basics and feeders Ian moves on to cover dipoles, other antenna types covered are vertical, Yagi, cubical quad and wide-band antennas (in the form of the log periodic).
	www.pwpub.demon.co.uk /pw/tex/AIA16.html (1006 words)

	.: Print Version :.
		Nobukatsu Fujioka and Hidetsugu Yagi, members of the Japanese Society for History Textbook Reform, said their book is meant to correct exaggerated accounts of Japanese atrocities in other books.
		The Japanese Education Ministry's approval in April of the latest version of the New Japanese History book triggered fierce opposition by critics in Japan and elsewhere.
		Fujioka and Yagi argued on Tuesday that accounts of the wartime brothels are not historically accurate, and they also took issue with the idea that Japanese troops slaughtered large numbers of civilians in Nanking.
	www.nctimes.com /articles/2005/05/11/special_reports/books/21_20_075_10_05.prt (393 words)

	Authors defend controversial Japan textbook. 10/05/2005. ABC News Online
		Approval of the book last month helped set off violent anti-Japanese protests across China and prompted strong protests from South Korea, further fraying already strained ties with both neighbours.
		Hidetsugu Yagi is the head of the Japanese Society for Textbook Reform, which wrote the most controversial of the junior high school history textbooks approved this year.
		Mr Yagi, whose group has said other texts present a "masochistic" view of history, told a news conference that the trauma of defeat had for years caused Japan to believe everything it had done was wrong, leading to distortions of history.
	www.abc.net.au /cgi-bin/common/printfriendly.pl?http://www.abc.net.au/news/newsitems/200505/s1364580.htm (532 words)

	The tale of Genji written by Murasaki Sikibu in the 11th century is the most well-known and oldest novel that Japan is ...
		Sometimes he asked Japanese students studying in London of what he had thought questionable.
		Hidetsugu Yagi and Yukio Yasiro were among them.
		It was 1924 that Stanley Unwin, president of George Allen and Unwin heard of Lady Murasaki from Arthur Waley, a search worker of the British Musium.
	www2s.biglobe.ne.jp /~matu-emk/waley.html (1695 words)

	WiFi antenna
		These days, many public high-speed wireless networks can be accessed directly from the car, truck or RV.
		Yagi antennas: Yagi antennas were the brainchild of two Japanese gentlemen, Hidetsugu Yagi and Shintaro Uda, and are thus referred to as Yagi-Uda antennas.
		They were originally designed for radio, but are now also used for 802.11 systems.
	www.nccw.net /isp-resources/wifi/wifi-antenna.html (459 words)

	Sound For Churches Professional Audio Reference (Y) (Site not responding. Last check: 2007-10-12)
		Abbreviation for luminance (fl and white) video signal.
		Yagi antenna Shortened form of Yagi-Uda antenna, a linear end-fire array consisting of a driven element, a reflector element, and one or more director elements -- your basic TV antenna.
		[named after Hidetsugu Yagi (1886-1976), laboratory director of Shintaro Uda, professor at Tohoku University in Sendai, Japan.]
	www.soundforchurches.com /par-y.html (329 words)

	The Japan Times Online (Site not responding. Last check: 2007-10-12)
		Speaking at the Foreign Correspondents' Club of Japan, Hidetsugu Yagi, president of the Japanese Society for History Textbook Reform, said foreign experts and political leaders appear to have criticized the junior high school textbook without having read it.
		Its English translation of sections on events from the Industrial Revolution to the present and Korean translation of parts referring to the Korean Peninsula will be put on the Web site soon, according to Yagi.
		The society was founded in 1997 by people known for having strong nationalistic views of history.
	www.japantimes.co.jp /cgi-bin/getarticle.pl5?nn20050511f1.htm (507 words)

	Review: Wi-Fi cAntenna Deluxe 10" & Mini-Tenna 5"
		Ham radio enthusiasts were the first ones to start using soup cans for antennas, long before the modern computer.
		The two inventors from Japan, Hidetsugu Yagi and Shintaro Uda were the first two people to ever come up with the idea.
		If you have ever looked at commercially available RF Antenna's, then you have probably seen the name "Yagi".
	www.overclockersclub.com /?read=1070886190 (269 words)

	RadioShack Products Glossary: Y
		Communications: An unidirectional antenna with at least three elements: a reflector, a driven element and at least one director.
		Also called a Yagi-Uda Array, after Hidetsugu Yagi and Shintaro Uda, who collaborated in developing this antenna type.
		Video: The standard digital color space for consumer video, often abbreviated to YCbCr (without the apostrophe).
	support.radioshack.com /support_tutorials/glossary/glossary-y.htm (126 words)

	Pringles Yagi Antenna
		These antennas were the design of two Japanese people, Hidetsugu Yagi and Shintaro Uda, and are sometimes refered to as Yagi-Uda antennas.
		I have heard of, but not yet used, Cisco's implementation of 802.11x, which has all kinds of improvement on the security of your wireless connections.
		I looked at this cool Seattle Wireless page with wonderful pictures of a manufactured directional yagi antenna and then I did some math and built one as much like it as I could afford.
	www.netscum.com /~clapp/wireless.html (4344 words)

	Mobile Pipeline \| Understanding Wireless MANs (Site not responding. Last check: 2007-10-12)
		You can easily mount a patch antenna on a wall on one side of a facility and effectively cover a large area.
		A Yagi antenna, a common antenna invented by Japanese inventor Hidetsugu Yagi, is the semidirectional antenna best for long-range applications
		For example, a university might employ a Yagi antenna to effectively cover a large, open, outdoor area of the campus.
	www.mobilepipeline.com /showArticle.jhtml?articleId=54200023&pgno=3 (764 words)

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