Dual-Feed Small-Size Penta-Band PIFA for LTE/WWAN Mobile Handset Applications

Aalborg Universitet Dual - Feed Ultra - Compact Recongurable Handset Antenna for Penta - Band Operation

Compact High Isolation Meandered-Line PIFA Antenna for LTE (Band-Class-13) Handset Applications

MIMO systems have become an essential part in many communications networks and Long Term Evolution (4G) mobile communication systems. Mobile handsets using lower band of LTE (LTE700 band) require antennas of reduced size that can be adapted to the limited space in the handset. This paper presents the design, optimization and implementation of two meandered-line PIFA antennas working as an MIMO ...

A Frequency Tunable PIFA Design for Handset Applications

A frequency tunable planar inverted F antenna (PIFA) is presented for use in the following bands: DCS, PCS, and UMTS. Initially, the tuning was achieved by placing a lumped capacitor, with values in the range of 1.5 to 4 pF, along the slot of the radiator. The final tuning circuit uses a varactor diode, and discrete lumped elements are fully integrated with the antenna. The antenna prototype is...

Wideband Tunable PIFA Antenna with Loaded Slot Structure for Mobile Handset and LTE Applications

A compact planar inverted F antenna (PIFA) with a tunable frequency response is presented. Tuning of the resonant frequency is realized by loading a varactor on an embedded slot of the proposed antenna structure without further optimizing other antenna geometry parameters. The antenna exhibits a wide frequency range from 1570 to 2600 MHz with a good impedance matching (S11 ≤ -10dB) covering the...

A Dual-Band U-Slot PIFA Antenna with Ground Slit for RFID Applications

In this paper, a Planar Inverted-F Antenna (PIFA) with U-Slot (U-PIFA) and slit in ground is introduced. The proposed PIFA is compact with single coaxial feed, single short strip, and single short pin. The main achievement of this research was the design of ISM Microwave bands 2.45/5.8 GHz dual band PIFA antenna by using slit in ground to control the selection of lower resonance frequency witho...