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Maxim Integrated - Integration Nation
Blaine Bateman

RF Integration for Small Basestations

Blaine Bateman
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Brad Albing
Brad Albing
6/24/2013 7:30:07 PM
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Re: Application for small basestations
Mendy - thanks for jumping in and supplying a bit more info on these devices.

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Brad Albing
Brad Albing
6/24/2013 7:26:45 PM
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Re: Application for small basestations
@eafpres - that was a succinct, accurate explanation. That's the kind we like.

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Mendy Ouzillou
Mendy Ouzillou
6/24/2013 1:13:48 PM
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Newbie
Re: Application for small basestations
The family of RFPAL products can be found in a very wide range of deployed systems including: 20Wrms repeaters, 40Wrms (quad 10Wrms) TD-LTE Remote Radio Heads, picocells, microwave backhaul and others. Also will be in production with small cells applications down to 250mWrms.

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Netcrawl
Netcrawl
6/23/2013 8:01:47 PM
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Re: Application for small basestations
@Daej you're right, as new LTE networks deploy, many next-generation mobile devices will contain up to 14 frequency bands for quad-band 3G roaming or 4G data, will receive everything bluetooth and GPS, and more to come. But we have some serious challenges here, how do RF engineers squeeze more content into mobile devices without sacrificing perfomance or hitting battery life?

 

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Netcrawl
Netcrawl
6/23/2013 7:21:23 PM
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Re: Application for small basestations
@Daej the demand for high capacity data continues to increase every year at siginificant rates. Its an ongoing arm race, engineers have pushed into higher bandwidths, first with voice then the multimedia, this demand is evident in cellular technology with the rollout of 4G, and now the introduction of 5G, which aimed at the millions of application-rich mobile devices. The move to 5G would probably take about 2-3 years, we need to upgrade our systems and infrastructures. 

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DaeJ
DaeJ
6/23/2013 6:29:51 PM
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Re: Application for small basestations
In the parallel, 5G is being progressively developed from RF engineer and researcher. 5G is more faster than other network. But in the market, still 4G is not fully installed some area. Near future,  I guess that 5G/LTE will be deployed in either AT&T or Version.

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eafpres1
eafpres1
6/23/2013 4:02:49 PM
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Re: Application for small basestations
Hi Netcrawl--well, the market forecasts are saying this too,  However, the industry has talked about picocells and femto cells, even cells in homes, for many years.  Perhaps 4G/LTE deployment will finally be the real force to drive this architecture change to the network.

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eafpres1
eafpres1
6/23/2013 4:01:09 PM
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Re: AISG standards
Hi amrutah--as I understand, AISG is really more about the antennas, and has a lot to do with beam shaping, side lobes, electrical downtilt, etc.  

The issue is that the significant intermodulation products may still be within the band defined for the standard being used (say, LTE in the US) but could cause problems with channel to channel interference.  Intermodulation noise is a fact for a real system, the issue is what levels can the overall protocol tolerate and if the levels are higher, then some way must be found to reduce them.  Two possible approaches are to back off in power to get into a more linear range of the PA, but that hurts overall performance, or find a way to remove the IM products that are created.  The analog chip described here is applying the known technique of predistotion to reduce IM products.  What is innovative is that it is all in the RF band, not in the digital baseband.

 

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Netcrawl
Netcrawl
6/23/2013 2:26:28 AM
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Master
Re: Application for small basestations
@easpres you're right we're going to see a massive shift for mobile communications bast stations, with new technologies driving growth in the number of trnasceivers and base stations annually, and its going to happen within the next few years.

 

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amrutah
amrutah
6/23/2013 1:24:25 AM
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Master
AISG standards
I believe, the AISG standards are used for the base station and the Antenna.  And as per standard the PA should not deliver any power outside of its bands. So is the receiver not allowing anything outside its band.

   Is there any other standard used for defining the BS and the Antenna for small cells

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