Ceramic Chip Antenna Theory

A fractal is a complex pattern constructed from the repitition of a simple shape which maximizes the length or increases the perimeter of the material thats radiates an electromagnetic signal.

Ceramic chip antenna theory.

Chip antenna vishay s chip antennas include parts with uhf band coverage for mobile devices as well as surface mount ceramic chip parts for 868 mhz 915 mhz 1 575 ghz 2 4 ghz and 5 0 ghz applications. This application note only describes pifa and ceramic antennas because they are the most common low profile smallest and inexpensive types available. This way the antenna sees the structure that is comparable in the size to the wavelength in the medium while being very small compared to the free space wavelength. The chip antennas use some material usually ceramic that has high permittivity and low losses.

In the simplest case the geometry will be two parallel plates spaced. In a medium having high permittivity the wavelength is shorter than in the free space. In summary a ceramic chip antenna is one half of the overall design considerations and the pcb ground plane is the other. The actual oscillation mode will be defined by the geometry of the antenna.

One means of creating an antenna which can be integrated into a pcb would be the use of fractal geometry. Johanson miniature rf ceramic chip antennas are made using low temperature cofired ceramic ltcc technology which has the ability to embed low and high dielectric constants inside our antenna. Dielectric resonator antennas commonly referred to as chip work by creating a standing wave of electrical field of a given frequency technically it is a cavity resonator where the cavity between conductive surfaces is filled by the ceramic core. Area around and beneath the.

Mouser offers inventory pricing datasheets for ceramic chip antenna antennas. This enables them to have great detuning resilience and extreme temperature stability 2ppm behavior. 2 theory printed and surface mountantennas have certain common properties. Chip antennas are the best alternative when a larger sized antenna is impractical.