Ceramic Chip Antenna Theory

Ceramic chip antenna antennas are available at mouser electronics.

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. 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. 2 theory printed and surface mountantennas have certain common properties. Antenna to be made small while keeping a high resonant frequency.

In a medium having high permittivity the wavelength is shorter than in the free space. Area around and beneath the. Chip antennas are the best alternative when a larger sized antenna is impractical. Furthermore like a monopole antenna a ceramic chip antenna s tuning as well as radiation pattern is dependent on the ground plane s shape and size.

One means of creating an antenna which can be integrated into a pcb would be the use of fractal geometry. This application note only describes pifa and ceramic antennas because they are the most common low profile smallest and inexpensive types available. 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. 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.

In summary a ceramic chip antenna is one half of the overall design considerations and the pcb ground plane is the other. This enables them to have great detuning resilience and extreme temperature stability 2ppm behavior. The actual oscillation mode will be defined by the geometry of the antenna. In the simplest case the geometry will be two parallel plates spaced.