An improved but simple four band octagonal patch with new slotting technique of making a compact patch antenna is presented, which is suitable for C-band, X-band, Ku-band and K-band applications. This compact microstrip antenna realized by changing the geometric shape, obtained by inserting small circular slots in a new way. The simulation has been performed by simulation software GEMS version ...

The authors present a general computation of the time-varying magnetic flux density distribution of high-speed surface mounted permanent magnet (PM) motors (SMPMM). It deals with an analytical model (AM) which is based on a two-dimensional (2-D) analysis in polar co-ordinates and solves the governing Helmholtz/Laplace field equation in the airgap/magnet/rotor yoke regions, with due account of t...

This article proposes a quad band patch antenna for mobile communication. The design requirements are to meet the 0.9 GHz, 1.8 GHz, 2.1 GHz and 2.45 GHz bands. The proposed antenna consists of a rectangular patch monopole printed antenna in which slotting technique is used to achieve multi band resonance. The Patch with three slotted lines generates four resonating frequencies to cover 0.9 GHz ...

This paper is used the slotting technique to manufacture self-reinforced polypropylene (SRPP) sandwich structure. The crashworthiness characteristics of structures were measured as a function relative density. In this research, particular focus placed on examining energy-absorbing with honeycomb and star cores. It was concluded that SRPP panel core length 60 mm provided best characteristics. Mo...

This paper analyzes an induction motor with high temperature superconducter (HTS) coated slotted solid rotor. By slotting the solid rotor, the electromagnetic torque near synchronous speed will increase but the starting torque will decrease. To improve starting torque, rotor slots are coated with HTS materials. Using HTS material vary the rotor resistance to great extends in starting step and t...