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Träfflista för sökning "hsv:(TEKNIK OCH TEKNOLOGIER) ;pers:(Kildal Per Simon 1951)"

Sökning: hsv:(TEKNIK OCH TEKNOLOGIER) > Kildal Per Simon 1951

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1.
  • Alfonso Alos, Esperanza, 1979, et al. (författare)
  • Gap waveguide components for millimeter-wave systems. Couplers, filters, antennas, MMIC packaging
  • 2012
  • Ingår i: IEEE Antennas and Propagation Society, AP-S International Symposium (Digest). - 1522-3965. - 9784885522703 ; , s. 243-246
  • Konferensbidrag (refereegranskat)abstract
    • Design of passive components (couplers, filters and antennas) and MMIC packaging validation intended for RF front ends for microwave links at 38 GHz using gap waveguide technology have been shown. The use of this technology allows all-in-one integration of receiver, transmitter, and diplexer including the antenna into one mechanical unit. These initial designs and studies have been made at the microwave band for validation and measurement purposes, and for comparison with existing technology. They represent the first step towards the application of gap waveguides to millimeter-wave systems, where gap waveguides could have a large potential.
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2.
  • Alfonso Alos, Esperanza, 1979, et al. (författare)
  • Ka-Band Gap Waveguide Coupled-Resonator Filter for Radio Link Diplexer Application
  • 2013
  • Ingår i: IEEE Transactions on Components, Packaging and Manufacturing Technology. - : Institute of Electrical and Electronics Engineers (IEEE). - 2156-3985 .- 2156-3950. ; 3:5, s. 870-879
  • Tidskriftsartikel (refereegranskat)abstract
    • Gap waveguide technology represents an interesting alternative as low-loss, cost-effective, and high-performance transmission line and package of microwave and millimeter-wave systems. A Ka-band coupled-resonator filter for a radio link diplexer, which requires high selectivity to isolate transmit and receiving channels, is proposed and realized using gap waveguide technology. The band-pass filter, which has a central frequency of 37.37 GHz and a pass bandwidth of 560 MHz, is fabricated between two parallel metal plates, leaving an air gap between them. After milling one of the plates, silver-plating is applied on them. Measurements show a minimum in-band insertion loss of 1 dB and agree quite well with simulations.
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3.
  • Alfonso Alos, Esperanza, 1979, et al. (författare)
  • Ka-band gap waveguide coupled-resonator filter for radio link diplexers
  • 2012
  • Ingår i: XXVII Simposium Nacional de la Unión Científica Internacional de Radio, URSI 2012 (Spanish URSI), Elche, Spain, 12-14 September 2012.
  • Konferensbidrag (refereegranskat)abstract
    • Gap waveguide technology represents an interesting alternative as low-loss, cost-effective and high-performance transmission line and package of microwave and millimeter-wave systems. A Ka-band coupled-resonator filter for a radio link diplexer, which requires high selectivity to isolate transmit and receiving channels, is proposed and realized using gap waveguide technology. The band-pass filter, which has a central frequency of 37.37 GHz and a pass bandwidth of 560 MHz, is fabricated between two metal parallel plates leaving an air gap between them. Measurements show a minimum in-band insertion loss of 1 dB and agree quite well with simulations.
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4.
  • Alfonso Alos, Esperanza, 1979, et al. (författare)
  • Parabolic cylindrical reflector antenna at 60 GHz with line feed in gap waveguide technology
  • 2013
  • Ingår i: 7th European Conference on Antennas and Propagation, EuCAP 2013, Gothenburg, Sweden, 8-12 April 2013. - 2164-3342. - 9781467321877 ; , s. 319-323
  • Konferensbidrag (refereegranskat)abstract
    • A parabolic cylindrical reflector antenna is proposed in this paper for wireless multi-gigabit communications at 60 GHz. The line feed is realized by a power distribution in parallel plate waveguide (PPW). Inside the PPW waveguide there are metal pin rows forming the contours of an H-plane horn structure in front of a parabolic reflector, where we see possible mechanical advantages in not requiring metal contact of the pins to more than one metal plate. They will still work as a total reflecting wall by making use of the same stopband features as in gap waveguide technology. The result is a low loss, low cost and very versatile 60 GHz antenna with high gain. The electrical design for maximum aperture efficiency and minimum loss is explained.
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5.
  • Alfonso, E., et al. (författare)
  • Design of microwave circuits in ridge gap waveguide technology
  • 2010
  • Ingår i: IEEE MTT-S International Microwave Symposium Digest. - 0149-645X. - 9781424460564 ; , s. 1544 - 1547
  • Konferensbidrag (refereegranskat)abstract
    • This paper presents recent advances is a new waveguiding technology referred to as ridge gap waveguides. The main advantages of the ridge gap waveguides compared to hollow waveguides are that they are planar and much cheaper to manufacture, in particular at high frequencies such as for millimeter and submillimeter waves. In these waveguides there are no mechanical joints across which electric currents must float. The gap waveguides have lower losses than microstrip lines, and they are completely shielded by metal so no additional packaging is needed, in contrast to the severe packaging problems associated with microstrip circuits. The gap waveguides are realized in a narrow gap between two parallel metal plates by using a texture on one of the surfaces. The waves follow metal ridges in the textured surface. All wave propagation in other directions is prohibited (in cutoff) by realizing a high impedance (ideally a perfect magnetic conductor) through the textured surface at both sides of all ridges. Thereby, cavity resonances do not appear within the band of operation. The paper studies the characteristic impedance of the line and presents simulations and measurements of circuits designed using this technology.
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8.
  • Alfonso, E., et al. (författare)
  • Power divider in ridge gap waveguide technology
  • 2010
  • Ingår i: EuCAP 2010 Fourth European Conference on Antennas and Propagation, Barcelona, 12-16 April 2010. - 9781424464319
  • Konferensbidrag (refereegranskat)abstract
    • A power divider in ridge gap waveguide technology has been designed to work at 15GHz. Measurements and simulations are provided. Besides, a broad numerical study of the characteristic impedance of a ridge gap waveguide is presented.
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9.
  • Alfonso, E., et al. (författare)
  • Study of the characteristic impedance of a ridge gap waveguide
  • 2009
  • Ingår i: IEEE Antennas and Propagation Society, AP-S International Symposium (Digest). - 1522-3965. - 9781424436477
  • Konferensbidrag (refereegranskat)abstract
    • This paper presents a study of the characteristic impedance of a ridge gap waveguide. Ridge gap waveguides belongs to a new metamaterial-based waveguide technology for millimeter and submillimeter waves which emerged recently. A formula for the characteristic impedance of an ideal PEC-over-PMC ridge gap waveguide has been derived. A preliminary numerical study of the characteristic impedance of a real ridge gap waveguide where the PMC is realized by a bed of nails is also presented.
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10.
  • Algaba Brazalez, Astrid, 1983, et al. (författare)
  • Design and Validation of Microstrip Gap Waveguides and Their Transitions to Rectangular Waveguide, for Millimeter-Wave Applications
  • 2015
  • Ingår i: IEEE Transactions on Microwave Theory and Techniques. - 0018-9480 .- 1557-9670. ; 63:12, s. 4035-4050
  • Tidskriftsartikel (refereegranskat)abstract
    • The paper describes the design methodology, experimentalvalidation and practical considerations of two millimeterwave wideband vertical transitions from two gap waveguide versions (inverted microstrip gap waveguide, and microstrip packaged by using gap waveguide) to standard WR-15 rectangular waveguide. The experimental results show S11 smaller than -10 dB over relative bandwidths larger than 25% and 26.6% when Rogers RO3003 and RO4003 materials are used respectively. The vertical transition from standard microstrip line packaged by a lid of pins to WR-15, shows measured return loss better than 15 dB over 13.8% relative bandwidth. The new transitions can be used as interfaces between gap waveguide feed-networks for 60 GHz antenna systems, testing equipment (like Vector Network Analyzers) and components with WR-15 ports, such as transmitting/receiving amplifiers. Moreover, the paper documents the losses of different gap waveguide prototypes compared to unpackaged microstrip line and Substrate Integrated Waveguide (SIW). This investigation shows that in V-band the lowest losses are achieved with inverted microstrip gap waveguide.
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  • Resultat 1-10 av 655
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Yang, Jian, 1960 (94)
Carlsson, Jan, 1962 (94)
Uz Zaman, Ashraf, 19 ... (67)
Sipus, Zvonimir, 196 ... (62)
Rajo, Eva, 1972 (52)
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Xiaoming, Chen, 1983 (49)
Carlberg, Ulf, 1978 (41)
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Skobelev, Sergei, 19 ... (32)
Pucci, Elena, 1982 (27)
Hussain, Ahmed, 1985 (24)
Glazunov, Andres Ala ... (21)
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Rosengren, Kent, 196 ... (20)
Kishk, A. (19)
Raffaelli, Silvia, 1 ... (18)
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Sotoudeh, Omid, 1978 (17)
Enoksson, Peter, 195 ... (16)
Algaba Brazalez, Ast ... (16)
Rahiminejad, Sofia, ... (15)
Maci, Stefano, 1961 (15)
Vosoogh, Abbas, 1984 (14)
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Vassilev, Vessen, 19 ... (13)
Helldner, Leif, 1969 (13)
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Alfonso, E. (10)
Klein, Benjamin, 198 ... (10)
Alfonso Alos, Espera ... (9)
Maaskant, Rob, 1978 (9)
Haasl, Sjoerd (9)
Jamaly, Nima, 1979 (9)
Franzen, M. (8)
Bosiljevac, M. (8)
Ivashina, M. V. (8)
Valero, A. (7)
Ingvarson, P (7)
Valero-Nogueira, A. (7)
Wolfgang, A. (7)
Nyberg, Daniel, 1980 (7)
Hirokawa, J (7)
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Schilliger Kildal, M ... (6)
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Chalmers tekniska högskola (655)
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