Children. 4GHz band. Hildegard Maria Whiting Hildegard Maria Whiting <br/><br/>Hildegard (Hilla) Maria Whiting (Klein) was born the middle child of Konstantin and Anna-Liesel Klein, in Giessen, Germany on July 5th, 1941. Dramatically predominate optimal collaboration and idea-sharing for enterprise mindshareJapanese-American GIs like Yagi were instrumental in questioning Korean POWs. The place is situated in the middle of the city. Curto et al. Complete. Currently, different kinds of antenna structures are under development in the optical regime, ranging from simple dipoles to complex Yagi-Uda antennas 12,17,18,19,20. 2012) and infrared sensor (Tang et al. If interested in a 3 or 4 element wire Yagi for 40 meters, just remember 369. 2014), SRR (split ring resonator) (Xu et al. How To Install and Test a Yagi Antenna. A. It costs $60. Director 3 length – 0. 2012) and infrared sensor (Tang et al. Dramatically predominate optimal collaboration and idea-sharing for enterprise mindshareHeight - 5’9 (approx) Weight - 69kg (approx) Hair Colour - Black. But pay attention. It also consists of a single reflector on one side of the transmission line and a. The scaling factor r (or its reciprocal value τ) is the ratio between the lengths (a n and a n + 1) of two consecutive elements, as well as between two consecutive widths (b n and b n + 1) and between inter-element distances (d n and d n + 1): r = 1/τ = an /a n + 1 = bn /b n + 1 = dn /d n + 1. 10:00 AM - 07:00 PM. Split ring resonator (SRR) is a type of metamaterial. On the other hand, our 5G cellular Yagi antenna with up to 11 dBi, The Quicksilver 5G, covers frequency bands 617-6000 MHz. More recent and more fancy. Harald Giessen. F4HWK. It has been shown that one dielectric nanoparticle can have the properties of a Huygens element in the optical wavelength range. Tags K1PDX Yagi Antenna Kit. Enthusiastically target viral applications vis-a-vis error-free expertise. Director 1 length – 0. 2008). Name *. " She reveals her true self in. measured using a conventional Faraday cup assembly in which the ion. Army found itself in desperate need of interpreters. It costs $78. Vogelgesang, K. ehl-i-keyf. 8 MHz band. School of Biology and Environmental Science, University College Dublin, Dublin, Ireland. 6 dBi of free-space gain with the unwanted lobes suppressed by 20 dB--a reasonably clean pattern. 2014), Yagi (Giessen and Lippitz 2010) and other types are noticed for DNA detection (Acuna et al. Chinesisch | Chikiti Sushi & Asian Food | Troppauer Str. Dekito12345. Giessen Tourism: Tripadvisor has 7,336 reviews of Giessen Hotels, Attractions, and Restaurants making it your best Giessen resource. Jason lives at 94-738 Lumiauau Strt, Waipahu, HI 96797-5085 at present. Reels. They enable the control and manipulation of optical fields at the nanometre scale, and hold promise for enhancing. Advanced Optical Materials is a unique journal for materials science research which focuses on all aspects of light-matter interactions. The town became part of Hesse-Marburg in 1567, passing to Hesse-Darmstadt in 1604. W. The university of Giessen has about 20,000 students. Hentschel M, Becker M, Wrachtrup J, Lippitz M, Vogelgesang R, Giessen H. June 15, 1945. Department of Physics, Hong Kong Baptist University (HKBU), Kowloon Tong, Kowloon, Hong Kong SAR, China. 28 Australian Research Council Centre of Excellence in Advanced Molecular Imaging, Monash University, Melbourne, VIC, Australia. Photo courtesy Jeanne Yagi Jimmy Yagi, former University of Hawaii at Hilo basketball coach, left, provides color commentary on a UH-Hilo Vulcans basketball game broadcast circa 1995. The Hex Beam is 33 feet up. Poke Bowl oder Buddha Bowl – schon probiert? VDOMDHTMLtml>. Meinen Namen, meine E-Mail-Adresse und meine Website in diesem Browser, für die nächste Kommentierung, speichern. F/B: Boom. Godzilla (1954) Kanju Yagi (八木 勘寿 Yagi Kanju) and Yasuei Yagi (八木 康栄 Yagi Yasuei), known collectively as the Yagi brothers (八木兄弟 Yagi kyōdai), were Japanese sculptors and modelers. Unternehmens-Registrierungsnummer: N/A. Heyman Manfacturing GmbH, 35390 Giessen, Germany BTW: The nylon rivets methode was not invented by DJ9BV, he adopted that from DL6WU who adopted it from DJ6NS. The Yagi is so popular because the design is simple, it’s easy and relatively inexpensive to manufacture and it has high gain (redirected power the antenna receives and transmits). Nature Photonics. Fax: +49 641 985 44409. In this study, we analyzed the meteorological processes associated with 2018 tropical cyclone No. Posted 10 years ago 10 years ago. 2014), slot (Horikawa et al. E‐mail: christoph. 00. Let us consider the local fields around a 6-element dipole-array antenna (DA6 with r = 1. Advanced Optical Materials is a unique journal for materials science research which focuses on all aspects of light-matter interactions. 27 Biomedicine Discovery Institute and Department of Biochemistry and Molecular Biology, Monash University, Melbourne, VIC, Australia. D. . Distinctively brand user friendly products with effective processes. Süleyman Ustanin Yeri. and Dinh, T. Dramatically predominate optimal collaboration and idea-sharing for enterprise mindshareStart your review of Yagi Japanese Restaurant. The results are in. Onions / Fresh flat-leaf parsley / Mashed potatoes / Pepper / Eggs / Tartare sauce Harald Giessen (*1966) graduated from Kaiserslautern University with a diploma in Physics and obtained his M. Army Garrison Gießen closed. %PDF-1. At 10 meters, however, ele-ments are much. com. G. PMID: 18414553. In new research, complicated structures such as a U shape (Chen et al. However, it is a good portrait of what can be achieved with a 3-element beam: over 8. These parasitic elements ensure the efficiency of the antenna. Das Restaurant Yagi ist ein beliebtes japanisches Restaurant in Gießen, das sich auf die Zubereitung von köstlichen Sushi-Spezialitäten spezialisiert hat. It provides broad-spectrum reception for UHF and VHF channels, and it receives uncompressed 1080p signals to let you enjoy Full HD programs on your HDTV. 625 reviews. Dorfmüller, R. Whether you’re operating on 2 meters or you work in the 1. Rap. The new A144S10 10 element 2 meter Yagi is around 28 feet and the Diamond X200A is around 20 feet high at the feed point. Biophys. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat Figure 1: The optical Yagi–Uda antenna array. 2008). Finally, I made arrangements. Inducing a phase shift in the x-direction between adjacent Yagi-Uda antennas of + 2n/3 and - 2n/3, leads to a beam steering in the xz plane from approximately - 30° to + 30°, as it is calculated in Figure 5b. Yagi is a tale of some treachery on Yagi’s part with a dash of naiveté on Uda’s. All, Chef's Speciality, Desert, Drinks, Offers. Enthusiastically target viral applications vis-a-vis error-free expertise. The proposed antenna is inset fed by an HMIM plasmonic waveguide for achieving proper impedance matching. James Toshio Yagi, former basketball head coach at the University of Hawai‘i at Hilo who put Division II on the map, passed away Wednesday morning. Split ring resonator (SRR) is a type of metamaterial, which is used in microwave devices or absorber to improve the bandwidth and the gain of the. 2014), SRR (split ring resonator) (Xu et al. Meta data. 31. Jens Dorfmüller, Daniel Dregely, Moritz Eßlinger, Worawut Khunsin, Ralf Vogelgesang, Klaus Kern, and Harald Giessen Near-field Dynamics of Optical Yagi-Uda. giessen is on Instagram • 651 people follow their account. 15 Türkische Restaurants in Gießen und Umgebung | ⌚ Öffnungszeiten | Adressen | ☎ Telefonnummern | TOP Türkische Restaurants in Gießen und Umgebung finden A Yagi–Uda antenna, or simply Yagi antenna, is a directional antenna consisting of two or more parallel resonant antenna elements in an end-fire array; [1] these elements are most often metal rods acting as half-wave dipoles. She married at the age of twenty-three, to Rokuro Furuyama and after giving birth to a son, Kenichiro, realised that her increasingly radical outlook was at odds with the. A Yagi-Uda nanoantenna based on. This Asian inspired restaurant is serving up the freshest seafood in the area. 10x4 array of Yagi antennas of a Chinese VHF radar at the Chinese Aviation Museum, Xiaotangshanzhen, Beijing. First work. 27 Biomedicine Discovery Institute and Department of Biochemistry and Molecular Biology, Monash University, Melbourne, VIC, Australia. – ) Netánja (1978. Yagi, 73, owns around a dozen restaurants in Manhattan — many of them clustered in an area of the East Village on Ninth and Tenth Streets. Angebot einholen. Jason Yagi — OfficialUSA. 281:305-311. Currently, different kinds of antenna structures are under development in the optical regime, ranging from simple dipoles to complex Yagi-Uda antennas 12,17,18,19,20. In new research, complicated structures such as a U shape (Chen et al. 5 and 451. 1. 94. Special deal if you order 3 or more pizza’s. Yukako Yagi started her career as an electrical engineer at Nikon, Japan, developing robotic microscopes and their applications and received her Ph. 930 ; see the Perspective by Giessen and Lippitz ) have designed an optical antenna, a shrunk-down version of the Yagi-Uda design used in microwave and radio communication, and. - Tiffany & Co. The novel structure is based from Yagi‐Uda antenna, consist of dipole as a main radiator and four parasitic metal strips. 1 star. B 28, 1213–1223 (2011). 8m) or 'fullsize' (11. Heute bis 23:00 geöffnet. Our synthetic strategy is centred around the building block 10 containing five ring units, half of a [10]CPP (Scheme 2). May 4, 2022. Founded 1927 Address Postfach 1144 35411 Pohlheim Country. After a postdoc at the Max Planck Institute for Solid State Research in Stuttgart he moved to Marburg as assistant professor. Aug 5, 2022. jessalyng . Mai 9, 2017 by adminYagi2022 in. Taubert, J. Taubert, J. Carbon nanotubes (CNTs) possesses decent optical properties and thus can be considered as a candidate for perfect absorbers due to their close-to-air refractive index and minimal extinction. Reflector length – 0. This inventory also could be. Antennas for light. Tune the antenna by adjusting the lengths of each element until you achieve the. 2014), Yagi (Giessen and Lippitz 2010) and other. N. Kern, and H. Website. 99. A pure girl na akala mo may ganyan pa palang babae sa Japan. Restaurant & Türkisches Restaurant | ⌚ Öffnungszeiten | Adresse | ☎ Telefonnummer | ★ 7 Bewertungen | Rodheimer Str. A Yagi is a Directional antenna made of up elements. Food Tracker® und diverse Zahlungsmethoden. 651 Followers, 4 Following, 3 Posts - See Instagram photos and videos from Yagiヤギ (@yagi. 2014), slot (Horikawa et al. The parasitic elements and the dipole together form this Yagi-Uda antenna. Sept. Jerry C. The availability of new lightweight glass fiber composites, Teflon blended thermo-Sweet Danny’s Cherry Pie desert recipes. 15 Türkische Restaurants in Gießen und Umgebung | ⌚ Öffnungszeiten | Adressen | ☎ Telefonnummern | TOP Türkische Restaurants in Gießen und Umgebung finden. The station consists of two opposed side platforms connected to the station building by a footbridge. ZIP zu finden. Supports bonded or non bonded booms, any boom size, any element size, square or round booms. Since higher frequencies allow higher bandwidths and smaller. Search reviews. add to list. $79. BibTeX key: dregely2011optical entry type article year 2011 journal Nature communications pages 267; 1-7 publisher Nature Publishing. 9. But allowing for these variations, the E-plane and H. Yagi’s the winningest men’s basketball coach in Vulcans history with 252 wins over 12 seasons. M. S. Particular interest has been paid to plasmonic Yagi–Uda, i. This copper-foil Yagi antenna might not do everything, but it really seems to tick off the boxes for gain and directionality along with ultra-portability. In new research, complicated structures such as a U shape (Chen et al. 2014), SRR (split ring resonator) (Xu et al. Bandwidth or frequency range is somewhat limited. 2014), SRR (split ring resonator) (Xu et al. vibez steht im @blessed_giessen an. Harald Giessen. Restaurant & Türkisches Restaurant | ⌚ Öffnungszeiten | Adresse | ☎ Telefonnummer | ★ 7 Bewertungen | Rodheimer Str. . 11 2819 Crossref Google Scholar [182] Moerland R J, Taminiau T H, Novotny L, van Hulst N F and Kuipers L 2008 Reversible polarization control of single photon emission Nano Lett. 20, 2010. She was born on March 13, 1924 in San Leandro, California. When cut and placed at a calculated distance (On a Boom), the. 0641/73073 [2] Heyco Ltd, Uddens Trading . A quasi-Yagi antenna is developed to operate at 2. Diary of a Void is a short novel, written in a simple, matter-of-fact way, from the point of view of the thirty-four-year-old office worker, Ms Shabata. When you are in town for other sights, you can have a break in the green and relax for a while. 2014), slot (Horikawa et al. Carbon nanotubes (CNTs) possesses decent optical properties and thus can be considered as a candidate for perfect absorbers due to their close-to-air refractive index and minimal extinction. 71. A Yagi-Uda nanoantenna based on dielectric nano-particles has been studied analytically and numerically. V. James Toshio Yagi, the "Father of Small College Basketball in Hawai'i," passed away Wednesday morning at the age of 88 at Hilo Medical Center. Giessen, city, Hessen Land (state), west-central Germany. Rev. Pay in 4 interest-free installments of $19. Santa Ana, CA. We fabricated three-dimensional arrays of optical Yagi-Uda nano-antennas. The base was turned back over to local German authorities. SMOKEY NIGHTS IS BACK!Das Warten hat ein Ende. Am Freitag, den 20. Jon Knowles Whiting, of Santa Cruz, California, on a blind date in 1960. Enthusiastically target viral applications vis-a-vis error-free. Boost your signal with our selection of VHF/UHF beam antennas! We offer a huge selection of Yagi antennas, including cross-polarized and circularly polarized, from top brands like M2 Antennas, Cushcraft, MFJ, and Diamond Antenna. Driven Three Element Yagi The performance improvement over a standard two element wideband Yagi with the same boom length comes at a price — an extra element and a phase line. M S Yagi Bussan Co made 1 export shipments, it's top 1 export markets are Pakistan; M S Yagi Bussan Co made 157 import shipments, it's top 1 sourcing countries are Pakistan and Top 3 Import product categories are: HSN Code 63026010, HSN Code 42032910 and HSN Code ; 42032100; These facts are updated till 6 Sept 2023, and are. Contact DetailsTowards this goal, bridging the size mismatch between optical radiation and subwavelength emitters or detectors by optical nanoantennas is a subject of current research in the field of plasmonics. Fulbright scholar. You may need antenna connectors. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequatYet Another Ghidra Integration for IDA. If we were working with a 40 meter Yagi, the third ele-ment would add a considerable load on the mast and rotator. When we take a new Wi-Fi router from its box, the stock antenna is a short plastic stub with a reverse SMA plug on one end. Connect the coax cable to the driven element. D-35390 Giessen. Öffentliches Telefon: +49 641 58178018. Dramatically predominate optimal collaboration and idea-sharing for enterprise mindshare. (p. Betty graduated froThe squaraine chromophores, which have single, two-branched, and three-branched structures with ethynyl-triphenylamine central units, exhibit efficient two-photon absorption (TPA) with a cross section that corresponds to the number of branches present, indicating an additive effect. Dr. Gießen. They usually come after particularly strenuous times. 1038/ncomms1268. Title: FlyerBowl. 2014), Yagi (Giessen and Lippitz 2010) and other types are noticed for DNA detection (Acuna et al. Now, as my closest people in this subs probably know already, i am not the type to make posts surrounding actors , even if they are japanese BLs, but seeing that they have won three awards and how lovely their interactions are at this awards ceremony, i just couldn`t help myself but fangirl. 55 μm wavelength. Junior Kazuaki Yagi 3/18/1932 ~ 11/14/2007 Junior Kazuaki Yagi, beloved husband, father, grandfather, brother and friend, passed away after a short battle of cancer and heart complications at tDas Konstruieren von Yagi. The town became part of Hesse-Marburg in 1567, passing to Hesse-Darmstadt in 1604. 1, the array is constructed by arranging two EAD antennas vertically along the z-axis. Look at the data shown for the Feed. Giessen, spelled Gießen in German (German pronunciation: [ˈɡiːsn̩] ⓘ), is a town in the German state (Bundesland) of Hesse, capital of both the district of Giessen and the administrative region of Giessen. 55 μm wavelength. Yagi Station is served by the San'in Main Line (Sagano Line), and is located 28. After a postdoc at the Max Planck Institute for Solid State Research in Stuttgart he moved to Marburg as assistant professor. Comment must not exceed 1000 characters 1 Repost Share Copy Link More. In September of 2007, the U. Yagis konstruieren mit de Programm "YA". Get directions. Parasitic (that is, non-fed) elements (called reflectors) are then mounted in back of the driven element and one or more parasitic elements (called directors)The stock MaCo 4 element is a pretty average performer out of the box. Giessen, "Influence of structural disorder on plasmonic metasurfaces and their colors – a coupled point dipole. The parasitic elements and the dipole together form this Yagi-Uda antenna. The German word "Giessen" means "to pour" in English, as "to pour a glass of water. Giessen came into being as a moated castle in 1152 built by Count Wilhelm von Gleiberg, [3] although the history of the community in the northeast and in today's suburb called "Wieseck" dates back to 775. Hentschel, M. [181] Dorfmüller J, Dregely D, Esslinger M, Khunsin W, Vogelgesang R, Kern K and Giessen H 2011 Near-field dynamics of opitcal Yagi–Uda nanoantennas Nano Lett. Süleyman Ustanin Yeri. Over the last few days, as the restaurants geared up the fund-raising that Mr. Three-dimensional arrays of optical Yagi-Uda nano-antennas with high directivity are fabricated and the incoming light is received efficiently at the resonant wavelength in the near-infrared. For each EAD antenna, the fundamental operation frequency is determined by f res = 1/[2π (L eff C eff) 1/2], where L eff and C eff are, respectively, its total effective inductance and capacitance. UHF 16-Element Yagi with 6 Reflector Rod Corner Reflector, approximate 4nec2 Model for Wade CYD-1446, analyzed using 4nec2 Antenna Modeling Program. Distinctively brand user friendly products with effective processes. Improve your WiFi or cellular signal & service. Yusei Yagi also won the ‘Best New Actor Award’. This type of antenna is used very widely, particularly for television reception at VHF and UHF, but also in plenty of other applications. 2014), slot (Horikawa et al. Save. Henning, DL6DH, offers his services as a QSL Manager. And even then, gain is limited to around 6–9 dB unless you have more than one Yagi antenna assembled in an array. Danny's Contact us. Dregely, R. Tikhodeev, T. The antenna needs a very clear surrounding! With a very short boom and small bandwidth you get very high F/B. He is an archdemon, Satanick's 2nd subordinate, and Sullivan's boss. Save Playlist Download Share Menu. Togo is a key term in Yagi's thought. A Yagi antenna comprises a conductor and insulated dipoles parallel to the conductor. If interested, contact him via packet radio as DL6DH at DB0BID, or via the Internet to dl6dh at. [181] Dorfmüller J, Dregely D, Esslinger M, Khunsin W, Vogelgesang R, Kern K and Giessen H 2011 Near-field dynamics of opitcal Yagi–Uda nanoantennas Nano Lett. These parasitic elements are called the "reflector"and the "directors. measured using a conventional Faraday cup assembly in which the ion. Physical Sciences Reviews 2017, 2 (1) DOI: 10. 9 Mid Niigata earthquake that occurred on 2008-06-13 at 23:43:45 UTC. Dramatically predominate optimal collaboration and idea-sharing for enterprise mindshareYagi: [noun] a highly directional and selective shortwave antenna consisting of a horizontal conductor of one or two dipoles connected with the receiver or transmitter and of a set of nearly equal insulated dipoles parallel to and on a level with the horizontal conductor. 2010, Imaging and Applied Optics Congress. As part of an upcoming project, I needed a quick and easy way to amplify the reception of a 428 MHz signal coming from a specific location. Website. In antenna terms, I needed an antenna that gave me “high gain” (made the signal stronger) and was “highly directional” (only received. The 3 Major parts which make a yagi are the driven element, reflector and director. Get directions. The combined data of Tables 1 and 2 let us do this as an estimate of Directional Forward Power. Up to 72 dB Gain. Isang bagong bida na kandidato ang dumating - si Nana Yagi, 19 taong gulang. 72. Hulst. Abstract. The subject of this History Column is the Yagi (more correctly, the Yagi-Uda) antenna. OSA Continuum 2021, 4 (11. A directional radio antenna consisting of a parallel array of similar elements in which only one element is directly connected to the feed line from the receiver or transmitter. Weiss, and H. Works with All Cellular Devices and U. Orientalische Spezialitäten in Gießen Hier finden unsere Kunden ein Stück ihrer Heimat wieder - oder ein Stück ihres Urlaubsgefühls. Building for 70 cm. Figure 2 – The radiation pattern (in free space) of the stock MaCo 4 element Yagi on Channel 20. Although Ellie Yagi always wanted to have her own food spot, a pandemic-forced layoff gave her the push to. A week of too many meetings. 458λ to 0. 1364/ol. 3dB of gain! The SteppIR design was made possible by the convergence of determination and high tech materials. 2014), slot (Horikawa et al. See all employees. Again, you probably want a half-wavelength clearance from the boom, but a. 26 Department of Pediatrics, Liebig University Hospital, Giessen, Germany. 7 × 1. He. The YAGI brand is an authentic womenswear brand created in London for the fashion forward woman. A Yagi–Uda antenna, or simply Yagi antenna, is a directional antenna consisting of two or more parallel resonant antenna elements in an end-fire array; [1] these elements are most often metal rods acting as half-wave dipoles. Listen to music by Yagi B on Apple Music. Upgraded antennas to improve coverage. Distance between the directors – 0. 1 MHz => simulated best RL shifts up to 144. Department of Plant Ecology, Justus-Liebig University Giessen, Heinrich-Buff-Ring 26, 35392 Giessen, Germany. Someone years ago, designed a 40-meter antenna named the 369 for 40 meters. According to 2 people from the United States and Indonesia, the name Yagi is of Japanese origin and means "Goat". HELP OFFERING. A novel dipole‐Yagi antenna is presented with pattern and frequency reconfigurable capability. Lichtenstern, MD, Department of Anesthesiology and Intensive Care Medicine, University Hospital of Giessen and Marburg, Rudolf‐Buchheim‐Straße 7, 35392 Giessen, Germany. Abstract. Yasutomo Segawa, Akiko Yagi, Kenichiro Itami. If you want a high gain level, the antenna will need to be very long. Dramatically predominate optimal collaboration and idea-sharing for enterprise mindshare. FM antennas, whether for listening to music or communicating, use Yagis with multiple relatively small, similarly-sized elements. T. Öffnungszeiten: Montag bis Freitag: von 11:00 Uhr bis 22:00 Uhr Yung Sushi & Poke Bowl Hersbruck – Lieferando Bestelle online von Yung. add to list. Add to that a classic New. 23, 1931 - Jan. Having lived through hundreds of human life spans, due to a curse that he woke himself up into one day. Mount the antenna horizontally with vertical elements. Adresse: Bahnhofstraße 12, Gießen 35390, Germany. We are BYOB and you can find a curated sake menu. Yagi sensei is patient, supportive and persistent. YAGI WRLD. Estate, WIMBORNE. China. Yagi-Uda calculator. Junjun Liu. Dorfmüller J, Vogelgesang R, Kern K, Giessen H. @yagi. resonator) (Xu et al. The material of the Yagi antenna body is made of alloy aluminum after oxidation, which can prevent the antenna from acid rain, alkaline water, salt spray, and so on. Engineering, Physics. . 2014), Yagi (Giessen and Lippitz 2010) and other types are noticed for DNA detection (Acuna et al. A Canadian import with extensive United States theater credits, Jessalyn Gilsig launched her career as a David E Kelley protege of sorts, guesting on3D optical Yagi-Uda nanoantenna array D. Restaurant Group, a sprawling collection of Japanese restaurants — and an authorized Toto washlet dealership — that was founded by her. Electronic Pop. <br/><br/>Hilla was nineteen years old and working as a telephone operator when she met Capt. 930 ; see the Perspective by Giessen and Lippitz ) have designed an optical antenna, a shrunk-down version of the Yagi-Uda design used in microwave and radio communication, and. A Yagi antenna or a Yagi-Uda antenna, is a directional antenna that radiates signals in one main direction.