Planar Monopole Antenna With Two Coupled Strips for Internal Eight-Band Lte/Wwan Laptop Computer Application

Abstract

Abstract-In this paper, a compact planar monopole antenna with eight-band LTE/WWAN (LTE700/2300/2500/GSM850/900/1800/ 1900/UMTS) operation for laptop computer application is presented. This design structure comprises a bent driven strip and two coupled strips, which can contribute multiple resonance modes to combine two wide operating frequency bands covering 665-1023 MHz and 1612-2924 MHz. The proposed antenna fed by a 50-Ω coaxial cable occupies a small size of only 65(L) × 11(W) × 0.4(H) mm 3 , so it can be flexibly embedded inside the casing of the laptop computer as an internal antenna. A fabricated prototype of the antenna is tested and analyzed. Experimental results exhibit that nearly omnidirectional coverage and stable gain variation across the desirable LTE/WWAN bands can be obtained with the antenna.

Planar small-size LTE/WWAN tablet computer antenna with eight-band operation

“…Therefore, to fulfill the 698-960/1710-2690 MHz bands and suitably embed it into a limited space, a small-size multiband antenna is the most optimal candidate of providing commercial broadband coverage in the bandwidth specifications of the 4G (LTE/ WWAN) system. The various applications of several planar monopole antennas (MAs) developed for LTE/WWAN operations include tablet computers, [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17] laptop computers [18][19][20], and mobile phones. [21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37] However, those presented antenna designs have the drawbacks in the larger antenna size [3][4][5][6][7][8][9][10] or insufficient operating bandwidth [11][12][1...…”

Circularly polarised multiservice RFID antenna

“…Wideband circular polarisation will help in incorporating many communication services with higher degree of signal quality. References [21][22][23][24][25] deal with multiservice antennas for tablet application having only linearly polarised far-field.…”