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An internal PIFA/slot antenna for quad-band mobile handset applications is presented. The quad-band operation for the bar-type mobile handset is obtained by the resonant modes of the slot antenna in conjunction with those of the PIFA. The proposed antenna has a compact size of 42 times 10 times 4 mm3. The quad-band operation includes GSM850 (824-894 MHz), GSM900 (880-960 MHz), DCS1800 (1710-1880 MHz),...
In this paper, a new space diversity antenna for mobile phones has been proposed and fabricated. It consists of two symmetrical PIFA with a small step-ground in a compact space of the size of a mobile phone. To improve the isolation between the two diversity antennas, a slot on the center of the ground plane is adopted to cut off the conducted current between the two antennas. The diversity antenna...
In conclusion, a novel planar PCB multiband antenna with parasitic element is proposed in this paper. Using only two simple radiating elements, the antenna operates with three separate resonant modes, covering six popular communication bands. The antenna area only occupies a small physical space (18 times 37 times 0.6 mm3). This simple planar PCB structure makes the antenna fabrication very cost effective...
In this paper, we present a novel two monopole antenna for LTE band class 13 (746 MHz-787 MHz, for MIMO application) / GPS (at L1 band:1565 MHz-1585 MHz) / PCS (1810 MHz-1990 MHz) / UMTS(1920 MHz-2170 MHz) band operations. The proposed antennas are composed of two conventional monopole antennas and these antennas are connected by suspended line to reduce the mutual coupling between the antenna elements...
In this paper, a compact CRLH antenna which consists of an LH line and an RH line which have different frequencies is presented. Thus dual band operation is possible, and the frequencies can be easily changed by altering LH or RH line parameters. Impedance matching can be adjusted using the stub length. Because of its small size, printed form, dual band operation, this antenna can be utilized in mobile...
Multi-band antenna covering GSM850/GSM900/DCS1800/PCS1900/UMTS2100 in mobile phones is presented. The proposed antenna is kind of a modified PIFA which consists of PIFA and T-branch. The bandwidth in low and high band is achieved using gap coupling between low and high band arm. And also bandwidth in low-band is improved by the coupling between T-branch and metal ring along the edge of the housing...
In this paper, a dual frequency antenna with meandering slots is proposed. The effects of every slot of the proposed antenna are analyzed in detail using FEM. The proposed antenna has with an air-layer substrate of 13 mm and covers the required bandwidths of the GSM and WCDMA systems. The proposed antenna is especially suited for application in wireless communication repeater systems.
In this paper, a multi-band internal antenna for WiBro/WLAN/M-WiMAX (2.3 GHz ~ 2.69 GHz) and WCDMA services is proposed. The proposed antenna is composed of a MIMO antenna with two identical folded monopoles for WiBro/WLAN/M-WiMAX services and a separate folded monopole antenna for WCDMA service. For the MIMO antenna, two stubs are added between the two elements to improve the isolation performance...
In this paper we investigate the characteristics of a novel penta-band antenna suitable for handset terminals. The structure combines shorted parasitic patches, capacitive loads and slots to achieve operation at 5 different frequencies, namely the GSM, DCS, PCS, UMTS, HIPERLAN = 2 and IEEE 802.11a bands. We demonstrate that a 2.5:1 voltage standing wave ratio (VSWR) is realized, along with good efficiency,...
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