125,467 research outputs found
V.A. Yagi, Contes d'Omdurman
No full textVial Charles. V.A. Yagi, Contes d'Omdurman. In: Revue de l'Occident musulman et de la Méditerranée, n°34, 1982. p. 164
V.A. Yagi, Contes d'Omdurman
No full textVial Charles. V.A. Yagi, Contes d'Omdurman. In: Revue de l'Occident musulman et de la Méditerranée, n°34, 1982. p. 164
A novel tunable frequency dipole-yagi antenna for wireless body area network (WBAN) applications
No full textA novel Dipole-Yagi antenna is presented with frequency reconfigurable capability. The novel structure is based from Yagi-Uda antenna, consist of dipole as a main radiator and four parasitic metal strips. The parasitic metal strips can be formed to function as part of the radiator, reflector or director by means of switches. The switches are located at specific position. Four switched band at 0.98, 1.5, 2.1 and 2.5 GHz are demonstrated. Measured and simulated results are presented. Good agreement is observed
Yagi et al. Figure data
No full textThe files contain the data underlying the figures in: Moeri Yagi, Simon Miller, Yoshiko Nagai, Shinsuke Inuki, Ayato Sato, and Tsuyoshi Hirota, A methylbenzimidazole derivative regulates mammalian circadian rhythms by targeting Cryptochrome proteins. F1000Research
Figure 1B.csv (Luminescence rhythms of Bmal1-dLuc and Per2-dLuc U2OS cells in the presence of various concentrations of TH401 (n = 2))
Figure 1C.csv (Changes in period (n = 6))
Figure 1D.csv (Changes in luminescence intensity (n = 6))
Figure 1E.csv (Changes in cellular ATP levels after treatment with various concentrations of TH401 (n = 4))
Figure 2A.csv (Inhibitory effect of Longdaysin and TH401 on CKIδ activity in vitro (n = 1))
Figure 2B.csv (Changes in the half-lives of CRY-luciferase fusion proteins (CRY1-LUC and CRY2-LUC) relative to LUC in the presence of various concentrations of TH401 (n = 2))
Figure 2C.csv (Changes in Per2::Luc knock-in reporter activity in wild type, Cry1/Cry2 double knockout, Cry1 knockout, and Cry2 knockout fibroblasts (n = 4–8))
Figure 2D.csv (Changes in the cellular circadian period of Bmal1-Eluc reporter rhythms in Cry1/Cry2 double knockout fibroblasts rescued with CRY1 and CRY2 (n = 3–6))
Figure 2E.csv (Changes in the protection of CRY1 and CRY2 proteins from thermal denaturation in HEK293T cells (n = 4))
Figure 2F.csv (Changes in denaturing temperatures of recombinant CRY1(PHR) and CRY2(PHR) in vitro (n = 2))
Figure 4.csv (Changes in the circadian period in primary screening (tested at 7 μM; n = 1) and a secondary assay (tested at 24 or 8 μM; n = 3))
</p
Yagi, Viviane Amina. - Contes d'Omdurman
No full textYagi, Viviane Amina. - Contes d'Omdurman. In: Cahiers d'études africaines, vol. 22, n°85-86, 1982. Études épidémiologiques et approches géographiques des maladies en Afrique tropicale. Mélanges pour un dialogue. pp. 206-207
Yagi, Viviane Amina. - Contes d'Omdurman
No full textYagi, Viviane Amina. - Contes d'Omdurman. In: Cahiers d'études africaines, vol. 22, n°85-86, 1982. Études épidémiologiques et approches géographiques des maladies en Afrique tropicale. Mélanges pour un dialogue. pp. 206-207
Experimental Analysis Of Quasi-yagi Antenna Shapes [analiza Eksperymentalna Pie{ogonek}ciu Szerokopasmowych Anten Typu Quasi-yagi]
No full textIn this work, a broadband quasi-Yagi antenna is presented and its shape design is changed to analyse new characteristics and properties for wireless communications. This microstrip-fed antenna is designed in five different shape versions: dipole driver, patch driver, meander driver, log-periodic director array, and multi-director array. Details of the proposed designs and measured results of input return loss and radiation pattern are presented and discussed. In addition, a technique using a microwave link to measure the radiation pattern is explored, showing good radiation characteristic of the elements in a real environment.8912100104Garg, R., Bhartia, P., Bahl, I., Ittipiboon, A., (2001) Microstrip Antenna Design Handbook, , Artech HouseCarver, K.R., Mink, J., Microstrip antenna technology (1981) IEEE Transactions on Antennas and Propagation, 29 (1), pp. 2-24Kretly, L.C., Sodre, A.C., Tavora, A.S., A hexagonal antenna array prototype for adaptive system application (2002) IEEE International Symposium on Wireless Personal Multimedia Communications, pp. 757-761. , OctoberDeal, W.R., Kaneda, N., Sor, J., Qian, Y., Itoh, T., A new quasi-yagi antenna for planar active antenna arrays (2000) IEEE Transactions on Microwave Theory and Techniques, 48 (6), pp. 418-910. , JuneCapovilla, C.E., (2004) Antenas planares aplicadas as comunicacoes moveis de ultimas geracoes utilizado elementos quasi-yagi, , M. Sc. Dissertation, University of CampinasQian, Y., Deal, W.R., Kaneda, N., Itoh, T., Microstrip-fed quasi-yagi antenna with broadband characteristics (1998) Electronics Lett, 34 (23), pp. 2194-2196Qian, Y., Deal, W.R., Kaneda, N., Itoh, T., A uniplanar quasi-yagi antenna with bandwidth and low mutual coupling characteristics (1999) IEE AP-S Int. Symp. Digest, p. 924Nguyen, P.T., Abbosh, A., Crozier, S., Wideband and compact quasi-yagi antenna integrated with balun of microstrip to slotline transitions (2013) Electronics Letters, 49 (2), pp. 1-2Abbosh, A., Ultra-wideband quasi-yagi antenna using dualresonant driver and integrated balun of stepped impedance coupled structure (2013) IEEE Transactions on Antennas and Propagation, , 2013Nikolic, N., Weily, A.R., Compact e-band planar quasi-yagi antenna with folded dipole driver (2010) IET Microwave, Antennas, and Propagation, 4, pp. 1728-1734Ding, Y., Jiao, Y., Fei, P., Li, B., Zhang, Q.T., Design of a multiband quasi-yagi-type antenna with cpw-to-cps transition (2011) IEEE Antenas and Wireless Propagation Letters, 10, pp. 1120-1123Qin, P., Weily, A.R., Guo, Y.J., Bird, T.S., Liang, C., Frequency reconfigurable quasi-yagi folded dipole antenna (2010) IEEE Antenas and Wireless Propagation Letters, 58, pp. 2742-2747Choeysakul, C., Chaimool, S., Akkaraekthalin, P., Ultrawideband log-periodic series-fed printed dipole arrays antenna Proceedings of ISAP2007, , Niigata, JapanAnantapreecha, W., Duangkha, N., Pattichart, S., Eungdamrong, D., Novel e-shaped driver based on the quasi-yagi antenna (2007) The 9th International Conference on Advanced Communication Technology, 5, pp. 894-896Kan, H.K., Abbosh, A., Waterhouse, R.B., Bialkowski, M.E., Compact broadband coplanar waveguide-fed curved quasiyagi antenna (2007) IET Microwaves, Antennas and Propagation, 1, pp. 572-574Cai, Y., Guo, Y.J., Weily, A.R., Frequency reconfigurable quasi-yagi folded dipole antenna (2010) IEEE Antenas and Wireless Propagation Letters, 9Qin, P., Ding, C., Guo, Y.J., A high-gain beam-steering quasi-yagi antenna (2012) Proceedings of ISAP2012, Nagoya, JapanSong, H.J., Bialkowski, M.E., Kabacik, P., Parameter study of a broadband uniplanar quasi-yagi antenna (2000) 13th International Conference on Microwaves, Radar and Wireless Communications, 1, pp. 166-169Kretly, L.C., Capovilla, C.E., A novel antenna array based on quasi-yagi element for adaptive wireless system applications (2003) IEEE International Microwave and Optoelectronics Conference, 1, pp. 307-312. , SeptemberKretly, L.C., Capovilla, C.E., Patches driver on the quasi-yagi antenna: Analyses of bandwidth and radiation pattern (2003) IEEE International Microwave and Optoelectronics Conference, 1, pp. 313-316. , SeptemberKretly, L.C., Capovilla, C.E., A modified quasi-yagi antenna with meander shape on driver for wlan applications (2005) IEEE International Symposium on Antenna Technology and Applied Electromagnetics, , SeptemberRashed, J., Tai, C.-T., A new class of resonant antennas (1991) IEEE Transactions on Antennas and Propagation, 39, pp. 1428-1430. , SeptemberBalanis, C.A., (1997) Antenna Theory: Analysis and Design, , 2nd ed. John Wiley & SonsKraus, J.D., (1988) Antennas, , 2nd ed. McGraw-HillGodara, L.C., (2002) Handbook of Antennas in Wireless Communications, , CRC PressStutzman, W.L., Thiele, G.A., (1998) Antenna Theory and Design, , John Wiley & SonsSalonen, P., Sydanheimo, L., Keskilammi, M., Kivikoski, M., A small planar inverted-f antenna for wearable applications (1999) IEEE-Third International Symposium on Wearable Computers, pp. 95-100Arai, H., (2001) Measurement of a Mobile Antenna Systems, , Artech Hous
Modifikasi Antena Televisi Jenis Yagi Sebagai Penguat Sinyal Modem Menggunakan Sistem Induksi
No full text— Antena merupakan perangkat yang memiliki peranan yang sangat penting dalam sistem komunikasi tanpa kabel (wireless). Secara umum fungsi antena adalah sebagai pengubah gelombang yang dilewatkan pada saluran transmisi menjadi gelombang ruang bebas dan sebaliknya. Penelitian ini akan dibuat antena penguat sinyal modem dengan modifikasi antena televisi jenis Yagi yang beroperasi pada frekuensi 800 Mhz. Proses modifikasi dibantu dengan software Yagi calculator. Perubahan terjadi pada bagian driven dari model, ukuran sampai bahan yang digunakan dan bagian relektor. Dari hasil pengujian antena Yagi setelah dimodifikasi dapat disimpulkan antena Yagi dapat digunakan pada modem dan televisi dengan perhitungan menggunakan software Yagi calculator dan disimulasikan menggunakan MMANA-GAL. Diharapkan adanya pengembangan software dan metode modifikasi untuk menghasilkan parameter antena yang lebih akurat. Keywords— Modifikasi, antena Yagi, induks
Perbandingan Desain Antena Dipole dan Yagi-Uda Menggunakan Material Aluminium pada Frekuensi 470 – 890 MHz
No full text- Antena merupakan alat pemancar yang akrab dengan aktifitas sehari-hari dan mudah sekali dijumpai, di rumah, di gedung, bahkan pada alat komunikasi yang digunakan. Salah satu antena yang sering digunakan adalah antena televisi. Antena televisi yang sering digunakan adalah Yagi-Uda yang biasanya dipakai sebagai outdoor antena dan antena dipole yang biasanya digunakan untuk indoor antena. Masing – masing jenis antena memiliki kriteria dan keuntungan berdasarkan dari kebutuhan penggunaannya. Baik antena dipole maupun antena Yagi-Uda memiliki perbedaan diantaranya adalah besar bandwidth, nilai gain, dan pola radiasi. Pada paper ini dapat diketahui bahwa bandwidth yang dimiliki antena yagi-uda lebih besar daripada antena dipole yakni 0.39943 MHz untuk antena yagi-uda dan 0.16569 MHz untuk antena dipole. Begitupula dengan besar Gain yang dimiliki antena Yagi-Uda (6.64 dBi) lebih besar dibandingkan dengan gain dari antena dipole (2.29 dBi). Perbedaan ini dikarenakan faktor elemen director dan ketebalannya.Kata Kunci – Atena Televisi, Atena Yagi-Uda, Atena Dipole, Gain, Bandwidt
A novel pattern reconfigurable dipole-yagi antenna for wireless body area network (WBAN) applications
No full textA novel pattern reconfigurable Dipole - Yagi antenna design, simulation and measurement are presented in this paper . The structure based of Yagi - Uda rationale consisting of director and reflector with four PIN diodes operates at 2.5GHz is proposed. Radiation pattern can be well reconfigured by turni ng the PIN diode switches on and off
- …
