Abstract
Measurements and simulations have been done on a coplanar waveguide, which consists of a pair of slots which taper down to a separation and width of micron size. The purpose of this device is to permit one to concentrate microwaves or millimeter waves on magnetic samples of the order of a micron in order to do ferrimagnetic resonance (FMR) studies on such small samples. The transmission coefficient as a function of frequency found in the simulations agrees quite well with the measurements. The simulations show that the magnetic field at the pinch is about a factor of several thousand larger than the field of the incident wave. Results for the circuit parameters found from the simulations will be compared to the values for these parameters measured for this device, and the prospects for using the device for FMR studies on micron and submicron magnetic particles will be discussed.
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