Title:
FREQUENCY TUNABLE PLANAR ANTENNA
Document Type and Number:
WIPO Patent Application WO2007120531
Kind Code:
B1
Abstract:
A frequency tunable internal antenna includes a substantially planar radiating element with a feed point and a switching element all coupled to the radiating element. The radiating element includes a plurality of slots configured to form a first branch and a second branch within the radiating element. The plurality of slots are configured relative to the feed point such that in operation the first branch acts as a first resonator having a first native electrical length and the second branch acts as a second resonator having a second native electrical length. The switching element is configurable in a first position and a second position, where in the first position the switching element connects to a portion of the first branch to decrease the electrical length of the first resonator, and in the second position the switching element connects to a portion of the second branch to decrease the electrical length of the second resonator. In some embodiments the antenna is a PIFA antenna and further includes a short point.
Inventors:
SUVANTO MAURI (FI)
Application Number:
PCT/US2007/008191
Publication Date:
November 13, 2008
Filing Date:
March 29, 2007
Export Citation:
Assignee:
FLEXTRONICS AP LLC (US)
PIISILA MIKA (FI)
SUVANTO MAURI (FI)
PIISILA MIKA (FI)
SUVANTO MAURI (FI)
International Classes:
H01Q1/24; H01Q3/24; H01Q13/10
Download PDF:
Previous Patent: INTEGRATED LIQUID TO AIR CONDUCTION MODULE
Next Patent: REAL TIME VERIFICATION IN RADIATION TREATMENT
Next Patent: REAL TIME VERIFICATION IN RADIATION TREATMENT