Wave transmission lines and networks – Plural channel systems – Having branched circuits
Reexamination Certificate
2005-04-26
2005-04-26
Tran, Anh Q. (Department: 2819)
Wave transmission lines and networks
Plural channel systems
Having branched circuits
C333S129000, C333S132000, C333S134000
Reexamination Certificate
active
06885259
ABSTRACT:
Disclosed is a matching circuit of a laminated duplexer connected to an antenna terminal while being connected between transmitting and receiving filters to match the transmitting and receiving filters with the antenna terminal, the matching circuit being configured to reduce the physical length of each conductor pattern thereof, thereby being capable of achieving an improved miniaturization thereof. The matching circuit includes a transmitting matching unit constituted by a conductor pattern electrically connected to an antenna electrode connected to the antenna terminal while being electrically connected to the transmitting filter, a first ground electrode vertically spaced apart from the conductor pattern, a receiving matching unit constituted by a conductor pattern electrically connected to the antenna electrode and the receiving filter, and a second ground electrode vertically spaced apart from the conductor pattern of the receiving matching unit. A laminated duplexer provided with the matching circuit is also disclosed. In accordance with the configuration of the matching circuit, it is possible to achieve a reduction in insertion loss, an improvement in the reflection characteristics of an associated antenna, and, thus, an improvement in bandpass characteristics.
REFERENCES:
patent: 5525942 (1996-06-01), Horii et al.
patent: 6414567 (2002-07-01), Matsumura et al.
patent: 2002-164710 (2002-06-01), None
Jun Myung Pyo
Kim Nam Chul
Lee Byoung Hwa
Lee Ian
Park Dong Seok
Lowe Hauptman & Berner LLP
Samsung Electro-Mechanics Co. Ltd.
Tran Anh Q.
LandOfFree
Matching circuit and laminated duplexer with the matching... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Matching circuit and laminated duplexer with the matching..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Matching circuit and laminated duplexer with the matching... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3400547