Reduced size dielectric loaded spiral antenna

Details Reduced size dielectric loaded spiral antenna Reduced size dielectric loaded spiral antenna

2005-12-13

2005-12-13

Nguyen, Hoang V. (Department: 2821)

Communications: radio wave antennas

Antennas

Spiral or helical type

C343S7000MS

Reexamination Certificate

active

06975281

ABSTRACT:
A spiral antenna having a pair of antenna arms mounted on a dielectric substrate. A balun is included to connect the antenna which has an impedance of 100 ohms to a 50 ohm cable. Unique features of the spiral antenna design provide for size reduction at a given lowest required frequency of operation. The spiral antenna has dielectric material layers positioned on both side of the antenna's metal arms. In addition, the antenna input impedance is reduced from the normal 100 ohm input impedance to approximately 50 ohms due the dielectric material.

REFERENCES:
patent: 4431965 (1984-02-01), Aslan
patent: 5589842 (1996-12-01), Wang et al.
patent: 5936594 (1999-08-01), Yu et al.
patent: 6166694 (2000-12-01), Ying
patent: 6864856 (2005-03-01), Lynch et al.

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