Communications: radio wave antennas – Antennas – With aircraft
Reexamination Certificate
2007-09-27
2009-11-17
Chen, Shih-Chao (Department: 2821)
Communications: radio wave antennas
Antennas
With aircraft
C343S7000MS, C343S745000, C343S876000
Reexamination Certificate
active
07619574
ABSTRACT:
A tunable antenna comprises a conductor, a shunt inductance tuning element, a switch that controls the shunt inductance tuning element and the conductor, and a local ground connected to the shunt inductance tuning element. The switch is capable of activating the shunt inductance tuning element to change a frequency and bandwidth of the tunable antenna.
REFERENCES:
patent: 3475703 (1969-10-01), Kennedy et al.
patent: 4939525 (1990-07-01), Brunner
patent: 4973972 (1990-11-01), Huang
Barbieri Daniel M.
Chen Shih-Chao
Rockwell Collins, Inc.
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