DESIGN OF PLANAR COUPLED-FED MONOPOLE ANTENNA FOR EIGHT-BAND LTE/WWAN MOBILE HANDSET APPLICATION

In this paper, a planar coupled-fed monopole antenna with eight-bandLTE/WWAN(LTE700/2300/2500/GSM850/900/1800/1900 /UMTS) operation for mobile handset device application is proposed. It simply consists of a T-shaped driven strip and a coupled radiating structure, which occupy a small PCB area of 50(L)£15(W)mm 2 . This antenna, which is printed on a 0.4mm FR4 substrate and fed by a 50- › coaxial cable, can provide two wide operating bandwidths covering 697{1012MHz and 1598{2795MHz for LTE/WWAN communication systems. A prototype of the proposed antenna is fabricated, tested and analyzed. From the measurement results, nearly omnidirectional coverage and stable gain variation across the desired LTE/WWAN bands can be obtained with the antenna.

[1]  Wei-Yu Li,et al.  On‐board 7‐band WWAN/LTE antenna with small size and compact integration with nearby ground plane in the mobile phone , 2010 .

[2]  Cheng-Tse Lee,et al.  Internal WWAN clamshell mobile phone antenna with reduced groundplane effects using a current trap , 2009, 2009 Asia Pacific Microwave Conference.

[3]  Cheng-Tse Lee,et al.  Internal WWAN Clamshell Mobile Phone Antenna Using a Current Trap for Reduced Ground Plane Effects , 2009, IEEE Transactions on Antennas and Propagation.

[4]  E. Ofli,et al.  Effects of Hand Phantom on Mobile Phone Antenna Performance , 2009, IEEE Transactions on Antennas and Propagation.

[5]  Kin-Lu Wong,et al.  Small-size 11-band LTE/WWAN/WLAN internal mobile phone antenna , 2010 .

[6]  Kin-Lu Wong,et al.  Coupled-Fed Shorted Monopole With a Radiating Feed Structure for Eight-Band LTE/WWAN Operation in the Laptop Computer , 2011, IEEE Transactions on Antennas and Propagation.

[7]  Kin-Lu Wong,et al.  WWAN/LTE printed slot antenna for tablet computer application , 2012 .

[8]  Wideband surface-mount chip antenna for eight-band LTE/WWAN slim mobile phone application , 2010 .

[9]  Carles Puente,et al.  Coupled monopole antenna design for multiband handset devices , 2010 .

[10]  Kin-Lu Wong,et al.  Seven-band folded-loop chip antenna for WWAN/WLAN/WiMAX operation in the mobile phone , 2009 .

[11]  Kin-Lu Wong,et al.  Coupled‐fed loop antenna with branch radiators for internal LTE/WWAN laptop computer antenna , 2010 .

[12]  Kin-Lu Wong,et al.  Bandwidth enhancement of WWAN/LTE tablet computer antenna using embedded parallel resonant circuit , 2012 .

[13]  Carles Puente,et al.  A systematic method to design single-patch broadband microstrip patch antennas , 2001 .

[14]  Kin-Lu Wong,et al.  Simple two‐strip monopole with a parasitic shorted strip for internal eight‐band LTE/WWAN laptop computer antenna , 2011 .

[15]  Kin-Lu Wong,et al.  Wideband monopole antenna coupled with a chip-inductor-loaded shorted strip for LTE/WWAN mobile handset , 2011 .

[16]  Chang-Fa Yang,et al.  Compact Multibranch Inverted-F Antenna to be Embedded in a Laptop Computer for LTE/WWAN/IMT-E Applications , 2010, IEEE Antennas and Wireless Propagation Letters.

[17]  Kin‐Lu Wong,et al.  Planar Printed Strip Monopole With a Closely-Coupled Parasitic Shorted Strip for Eight-Band LTE/GSM/UMTS Mobile Phone , 2010, IEEE Transactions on Antennas and Propagation.

[18]  Cheng-Tse Lee,et al.  Planar Monopole With a Coupling Feed and an Inductive Shorting Strip for LTE/GSM/UMTS Operation in the Mobile Phone , 2010, IEEE Transactions on Antennas and Propagation.

[19]  Chih-Hao Chang,et al.  A Meandered Loop Antenna for LTE/WWAN Operations in a Smart Phone , 2010 .