Antenna coupling device
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 26, 2003
Grant Date -
Oct 24, 2002
app pub date -
Mar 4, 2002
filing date -
Mar 7, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The present invention relates to an antenna coupling device (14) for coupling radio frequency signal from a communication device (10) having an internal first antenna, the communication device (10) operable in n frequency bands, where n>1 and n is an integer. The antenna coupling device (14) comprises a port (16) connected/connectable to a transmission line (18). A conducting surface of said antenna coupling device (14) has a geometric shape in the form of a tree structure (20) connected to said port (16). The tree structure (20) comprises a number, m, of branches, where m.gtoreq.n, wherein said tree structure (20) comprises at least one branch b.sub.ix for each frequency band I of said communication device (10), wherein I is an integer and 1.ltoreq.I.ltoreq.n, and x is an integer and 1.ltoreq.x.ltoreq.k (i), and the total number, m, of branches satisfy the following expression ##EQU1## wherein k (i) is a function of I, which only can obtain an integer value and is the total number of branches for frequency band.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully