Ferrite loaded meander line loaded antenna

Details Ferrite loaded meander line loaded antenna Ferrite loaded meander line loaded antenna

2005-02-15

2005-02-15

Chen, Shih-Chao (Department: 2821)

Communications: radio wave antennas

Antennas

Microstrip

C343S744000, C343S895000

Reexamination Certificate

active

06856288

ABSTRACT:
A meander line loaded antenna is provided with a ferrite donut surrounding a portion of the meander line so as to effectively lower the operating range of the meander line loaded antenna by as much as 30%. At the lower frequencies the ferrite material introduces a minimal loss of 2 to 3 dB, whereas at the higher frequency range very little current passes through the meander line thus eliminating any effect of the ferrite on antenna performance. The utilization of the ferrite surrounding a meander line element permits the use of the miniaturized antenna and size for size reduces the low frequency cut off of the antenna.

REFERENCES:
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patent: 5790080 (1998-08-01), Apostolos
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patent: 6404391 (2002-06-01), Apostolos
patent: 6480158 (2002-11-01), Apostolos
patent: 6492953 (2002-12-01), Apostolos
patent: 20020118142 (2002-08-01), Wang

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