Essays about: "half-power bandwidth method"

Found 4 essays containing the words half-power bandwidth method.

  1. 1. Design of an Array of Patch-elements With a Band-pass Frequency Selective Surface Hybrid Radome : Analysis and characterisation of a frequency selective surface and a phased array antenna

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Curt-Herman Normark Frisk; [2022]
    Keywords : Frequency Selective Surface; Microstrip Patch Element; Circular Polarisation; Phased Array Antenna; Single Feed; Frekvensselektiv Yta; Mikrostrip Patchelement; Cirkulär Polarisering; Fasstyrd Gruppantenn; Single-matad;

    Abstract : A circular polarised phased array antenna and a frequency selective hybrid radome are designed and evaluated. The antenna system is well suited as a part of a communication link between platforms with a 600 MHz bandwidth and a centre frequency of 5 GHz. READ MORE

  3. 2. A measurement method for damping of drive shaft

    University essay from

    Author : Anders Bertilsson; [2019-07-03T14:13:54Z 2019-07-03T14:13:54Z 2004]
    Keywords : Samhällsbyggnadsteknik; Civil Engineering;

    Abstract : Sound in our society is beginning to be a health hazard in many places. This leads to legislation and recommendations by public authorities and governments. For a truck the sound pressure level should not exceed 80 dB(A) during a drive-by test set by international standards. READ MORE

  4. 3. Influence of the Non-linear Effects in the Design of Viscous Dampers for Bridge Cables

    University essay from KTH/Byggvetenskap; KTH/Skolan för arkitektur och samhällsbyggnad (ABE)

    Author : Yalda Acar; Pontus Jingstål; [2014]
    Keywords : Bridge cables; external viscous damper; half-power bandwidth method; loss factor; non-linear vibration; Brokabel; externa viskösa dämpare; half-power bandwidt metoden; förlustfaktor; icke-linjär vibrationer;

    Abstract : In this master thesis the performance of external viscous dampers attached to cables in cable-stayed bridges have been studied. A comparison has been performed between a linear and a non-linear cable model. The comparison was carried out for two bridge cables, one from the Dubrovnik Bridge and the other from the Normandie Bridge. READ MORE

  5. 4. Influence of the Non-linear Effects in the Design of Viscous Dampers for Bridge Cables

    University essay from KTH/Bro- och stålbyggnad

    Author : Yalda Acar; Pontus Jingstål; [2014]
    Keywords : Bridge cables; external viscous damper; half-power bandwidth method; loss factor; non-linear vibration; Brokabel; externa viskösa dämpare; half-power bandwidth metoden; förlustfaktor; icke-linjära vibrationer;

    Abstract : In this master thesis the performance of external viscous dampers attached to cables in cable-stayed bridges have been studied. A comparison has been performed between a linear and a non-linear cable model. The comparison was carried out for two bridge cables, one from the Dubrovnik Bridge and the other from the Normandie Bridge. READ MORE