Danidogg
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Hi guys,
I was designing IFA for dual band operation using SIM900A, I have 100x15mm PCB space to lay the antenna. I got the S11 and VSWR very good in HFSS, but the bandwidth is small (it doesn't cover all the frequencies especially at the higher band (1710 - 1880MHZ) the S11 at these band edges is no more than -3dB. and the VSWR is more than 4
Can anybody tell me how I can increase the bandwidth (The maximum I can raise the height above ground plane is 18mm for the 900MHZ element and smaller for the 1800, apparently)
Thanks
I was designing IFA for dual band operation using SIM900A, I have 100x15mm PCB space to lay the antenna. I got the S11 and VSWR very good in HFSS, but the bandwidth is small (it doesn't cover all the frequencies especially at the higher band (1710 - 1880MHZ) the S11 at these band edges is no more than -3dB. and the VSWR is more than 4
Can anybody tell me how I can increase the bandwidth (The maximum I can raise the height above ground plane is 18mm for the 900MHZ element and smaller for the 1800, apparently)
Thanks