Mutual coupling between microstrip antennas

Irradiating micro‐organisms on floors with a focalised structure composed of two patch antennas

“…About 50 years ago [5], Pólya and Szegö established various isoperimetric inequalities for the fundamental wavenumber of a membrane with fixed boundary, based on a variational definition using symmetrization and similar level lines. Mathematically, the equation is the same as that for the TM modes in hollow metallic waveguides, i.e., the Dirichlet problem of the two-dimensional scalar Helmholz equation.…”

“…An important aspect to be studied is the influence of the radiated material in the modification of the radiated fields and the antenna impedance [5,6]. The determination of the radiated fields in the presence of different dielectric means is important because this will be the main factor in obtaining the antenna feeding.…”

“…Obtaining the total near field requires numerical vector sums that take into account the current distribution in the printed antennas, which are obtained using the cavity model [2,3]. In achieving this sum we made use of the superposition theorem, the non-instantaneous action-reaction principle [4], and the influence of the coupled field [5] that modified the input impedance and the irradiator initial feeding, but not its radiation pattern.…”

Analysis and design of a novel UWB antenna array

“…In paper [4] , Jedlick and Poe have come out of some testing datum of the scattering factor between two units with different distances, and done much theoretical analysis based on the datum. In paper [5]- [6] , cavum model and reaction theory were used to deduce the formulation of calculating the mutual coupling between two micro-strip units. In paper [7] , reaction theory and the model of transmission line were utilized to gain the mutual admittance between two micro-strips.…”

Using microwave holography and microstrip antenna for 3D mouse investigation

“…The inter-element distance in the linear array (dx) must be integer multiples of the hologram sampling period. The cavity method (Penard andDaniel 1982, Jedlicka et al 1981) is used to calculate mutual coupling by the equivalance theorem. In this model, the following are assumed.…”