Communications: radio wave antennas – Antennas – Balanced doublet - centerfed
Reexamination Certificate
2005-09-13
2005-09-13
Chen, Shih-Chao (Department: 2821)
Communications: radio wave antennas
Antennas
Balanced doublet - centerfed
C343S7000MS
Reexamination Certificate
active
06943749
ABSTRACT:
A printed circuit board antenna structure for the transmission of radio frequency energy. The printed circuit board antenna of the present invention includes a circuit board subassembly having a component mounting section and an antenna section. The antenna section of the circuit board includes a pair of antenna traces that function as two sides of a dipole antenna. Each antenna trace includes a radiating strip where the combination of the pair of radiating strips has a length less than one-half the wavelength of the desired radiation being transmitted. Each antenna trace includes an impedance matching strip having a serpentine structure and coupled to the radiating strip. The impedance matching strip matches the desired impedance for the antenna driving circuit.
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Andrus Sceales Starke & Sawall LLP
Chen Shih-Chao
M&FC Holding, LLC
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