Ceramic Chip Antenna Theory

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Ceramic chip antenna theory.

One means of creating an antenna which can be integrated into a pcb would be the use of fractal geometry. The chip antennas use some material usually ceramic that has high permittivity and low losses. 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.

This application note only describes pifa and ceramic antennas because they are the most common low profile smallest and inexpensive types available. 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. 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.

2 theory printed and surface mountantennas have certain common properties. Chip antennas are the best alternative when a larger sized antenna is impractical. 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.

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. Mouser offers inventory pricing datasheets for ceramic chip antenna antennas. Ceramic chip antenna antennas are available at mouser electronics. In summary a ceramic chip antenna is one half of the overall design considerations and the pcb ground plane is the other.