A new excitation model for the numerical solution of field integral equation (EFIE) applied to arbitrarily shaped monopole antennas fed by coaxial lines is presented. This model yields a stable solution for the input ...

Conformal techniques, based on the covariance of Maxwell's electrodynamics under the full conformal group in four spacetime dimensions, are discussed in relation with the constant input impedance properties of frequency- ...

A balun designed on laminated epoxy PCB to measure inductive ultrahigh- frequency-balanced antennas is presented. Its objective is to minimise the reflection coefficient at its unbalanced input when the antenna is connected ...

A circularly polarised RFID tag antenna with wide axial ratio bandwidth, wide impedance bandwidth and simple tuning network is presented. The antenna, based on the widely used crossed-dipole design, incorporates a novel ...

In this dissertation, uniform helical antennas are used as a starting point to generate nonuniform optimized antennas . Improvements in the gain and input impedance are obtained by varying the helix shape using a second ...

This research proposes an Ultra High Frequency (UHF) exible passive tag antenna for Radio Frequency Identication (RFID) which operates at 902-928 MHz band frequency. The small antenna has a dimension of 13 mm x 28 mm x 0.4 ...