\$G antenna specifications

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Junior Member level 2
4G antenna specifications

Hi friends
I'm going to design an MIMO antenna for cellphone that is suitable for 4G cellular systems. But I have some vague that I looked for a lot and found nothing. Would you please give me a clue for following issues:
1. What is the frequency and frequency range for UL and DL in LTE-Advanced (4G). I found that the spectrum flexibility for LTE release 10 are:
• 450–470 MHz band
• 698–862 MHz band
• 790–862 MHz band
• 2.3–2.4 GHz band
• 3.4–4.2 GHz band
• 4.4–4.99 GHz band
So what does that mean? Should we design an antenna in one of the aferomentioned frequency ranges or it should cover all ?

2. How much is the required bandwidth for LTE-Advanced in designing the antenna. As I found the minimum is 40 MHz and the maximum limit is 100 MHz. But some articles mentioned this bandwidth will provide by Carrier Aggregation of 2 up to 5, 20 MHz contiguous spectrum. So how much bandwidth should we consider in our design? 20 MHz (same before?) or 40 MHz ?
3. As some articles mentioned it required at most 8$\times$8 MIMO. Locating 8 antennas on cellphone is impossible. I need to know that is it possible to locate 2 antennas on cellphone and support the required bit rate in 4G or we need at least 4 antennas?

So appreciated.

Roger Miller

Newbie level 5
Well not a very technical guy I am but I am using LTE technology in mobile. Long Term Evolution (LTE) is new revolutionary concept in mobile internet.
I think it should cover all because different service providers uses different frequencies to provide services of 4G like AT&T uses 700 Band 17, 1700/2100 MHz, Verizon uses 700, 1700/2100 MHz etc.

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