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US 6,329,962 B2Granted
Multiple band, multiple branch antenna for mobile phone
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorZhinong Ying
Life of this patent
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Abstract
A multiple band antenna having multiple branches, each branch having a length and geometry selected to resonate in a particular frequency band. Each branch can be formed by a flexible film which has a meandering, outer spiral or inner spiral strip line pattern formed thereon and which is formed into a desired shape. Each branch can also be formed by etching a strip line to a member of a desired shape. The strip line pattern is preferably formed by printing so as to avoid mechanical tolerance problems.
Claims18
A multiple band, branch antenna comprising:
- a plurality of metal strips;
- and
- a dielectric member;
- wherein said plurality of metal strips are formed on said dielectric member in a pattern;
- and
- wherein lengths of said metal strips are selected so as to allow said multiple band branch antenna to be tuned to multiple resonances, and wherein said metal strips are connected to each other at a common port and wherein the pattern of at least one of the metal strips is a spiral line pattern.
3 more elements
A multiple band, branch antenna comprising:
- a plurality of metal strips, each formed in a pattern and having a length;
- and
- a dielectric member onto which said plurality of metal strips are formed;
- wherein said length of each metal strip is selected so as to obtain a desired resonant frequency, and wherein said metal strips are connected together at a port and wherein the pattern of at least one of the metal strips is a spiral line pattern.
1 more element
Dependencies are inferred from the claim text.