PIFA ANTENNA SYSTEM FOR SEVERAL MOBILE TELEPHONE FREQUENCY BANDS

摘要

The purpose of the present invention is a kind of PIFA antenna system for the multiple resonance frequency bands developed in small-scale structure includes the HF power supplys (connection) of at least two mobile frequency bands grounding connection (G's) away from each other. For this purpose, PIFA antenna system of the present invention includes at least two antenna branch (Z1, Z2 form) be configured and band side by side substantially parallel to each other is connected with each other, in its bottom (F, F1) in order to (Z1 antenna branch is connected in series, Z2 scheduled distance) is extended in parallel, to form slit (SP) and production with the capacitive coupling branch (Z1, Z2) between straightway. The free end grounding connection (G's) (FE) is provided with the antenna branch of one (Z1), the PIFA antenna structures that HF power supplys connection (S, S1) is mounted on outer branch (Z1) have grounding connection (G). The width (W, W2 (Z1 antenna branch), Z2), length (B1, B2 wherein) it is calculated with slit (SP, SP1 therebetween): the mode makes the PIFA antenna structures tool, and there are two resonance frequency band settings to be fixed to one another in desired distance.