Wave transmission lines and networks – Coupling networks – Wave filters including long line elements
Reexamination Certificate
2008-03-11
2008-03-11
Lee, Benny (Department: 2817)
Wave transmission lines and networks
Coupling networks
Wave filters including long line elements
C333S219000
Reexamination Certificate
active
11150974
ABSTRACT:
Provided is an air cavity module for a planar type filter operating in millimeter-wave frequency bands. The air cavity module includes: the planar type filter operating in the millimeter frequency bands; an air cavity having open side and top surfaces to mount the planar type filter therein; and an air cavity cover closing up the open top surface of the air cavity to allow the transmission of signals from and into the planar type filter. The air cavity module can lessen both transmission loss and radiation loss to improve the characteristics of the filter that operates in the millimeter-wave frequency bands.
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“Packaging Using Microelectromechanical Technologies and Planar Components” Takahashi et al., IEEE Transactions On Microwave Theory and Techniques, vol. 49, No. 11, Nov. 2001, pp. 2099-2104.
Jun Dong Suk
Kim Dong Young
Lee Hong Yeol
Lee Sang Seok
Electronics and Telecommunications Research Institute
Ladas & Parry LLP
Lee Benny
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