Title :
Bandwidth Enhancement of the Small-Size Internal Laptop Computer Antenna Using a Parasitic Open Slot for Penta-Band WWAN Operation
Author :
Wong, Kin-Lu ; Chen, Wei-Ji ; Chou, Liang-Che ; Hsu, Ming-Ren
Author_Institution :
Dept. of Electr. Eng., Nat. Sun Yat-sen Univ., Kaohsiung, Taiwan
Abstract :
By embedding a parasitic open slot in the antenna ground of a small-size internal laptop computer antenna, enhanced bandwidth for the antenna´s lower band to cover the GSM850/900 operation (824-960 MHz) can be achieved. The internal laptop computer antenna in this study is a small-size coupled-fed shorted T-monopole, whose length along the top edge of the display ground of the laptop computer is 43 mm only. The antenna can also provide a wide upper band to cover the GSM1800/1900/UMTS operation (1710-2170 MHz). With the inclusion of the parasitic open slot, the total antenna length along the top edge of the display ground is 48 mm only, and the occupied antenna volume is 10 × 3.5 × 48 mm3 above the top edge of the display ground, which is the smallest for the internal penta-band WWAN laptop computer antenna that have been reported for the present. Detailed results of the proposed parasitic open slot on bandwidth enhancement of the internal WWAN laptop computer antenna are presented.
Keywords :
antenna feeds; monopole antennas; multifrequency antennas; slot antennas; GSM1800-1900-UMTS operation; GSM850-900 operation; bandwidth 1710 MHz to 2170 MHz; bandwidth 824 MHz to 960 MHz; bandwidth enhancement; parasitic open slot antenna; pentaband WWAN; size 43 mm; size 48 mm; small-size coupled-fed shorted T-monopole antenna; small-size internal laptop computer antenna; wireless wide area network communications; 3G mobile communication; Bandwidth; Computer displays; Computer networks; Embedded computing; Mobile antennas; Pervasive computing; Portable computers; Receiving antennas; Slot antennas; Bandwidth enhancement; WWAN antennas; laptop computer antennas; mobile antennas; open slot;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2010.2055815