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A hybrid slot and inverted L antenna is proposed to transfer a 'harmful' metal bezel to a useful antenna part. The antenna covers two bands, which are GPS (1.575 GHz) and WLAN (2.4-4.484 GHZ) frequency bands. To validate the concept, a prototype antenna was manufactured and measured on a FR4 board. The results agree well with simulations.
This paper presents a novel design of a compact varactor-tuned PIFA antenna for ISDB-T (terrestrial integrated services digital broadcasting) application. This design is based on capacitor loaded planar inverted-F antenna (PIFA) structure, and its resonance frequency can be electrically controlled so that wideband operation is achieved. A tuning circuit which consists of a varactor diode is introduced...
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