What is the expected timeframe for the U.S. market to ramp for the 5G market 
o depend on timing with the Chinese providers on I guess shifting back up to the higher frequency.
We're expecting really end of this year, first quarter of next year, so it's all going to be really driven by the time in the market. The good news is that we believe the chipset supply, particularly with the wider bandwidth is sampling and able to ramp as well, which has been part of what's hampered us. And then looking further out, our investment that we're looking at right now with the 5G U.S. market, we're going to be sampling toward the end of this year, but it takes a while to get designed into the infrastructure market so that will be a further ways out as well as the U.S.
market ramping.
Jeff Shealy -- Founder and Chief Executive Officer
So Tony, I'd like to add to Dave's comment, really, just for those of you not familiar with that Asian market. What has transpired there is, as Dave touched on, is this move to much significantly wider bandwidth. Initially, we saw specs in the 100 megahertz bandwidth range. Those have expanded out to 300 megahertz.
And so while we were ready to ramp with the portfolio that we announced up at 300 megahertz, there were some other -- as Dave mentioned, chipset availability was a challenge. Also some of the operator deployment focus was an issue. I did want to point out for the -- some of the milestones and -- or as a milestone in June, I don't think we advertised tremendously, but we did take the opportunity with this low to really make some improvements on the product portfolio and enhance some of the performance for that -- for our wide bandwidth filter portfolio. And then as Dave touched on, I want to make sure we brought in the C-band engagements.
Dave talked about sampling, but multiple customer engagements on the C-band that we're pretty excited about for the U.S. market.
Dave Aichele -- Executive Vice President, Business Development
Thanks for the color, guys. Best of luck.
Jeff Shealy -- Founder and Chief Executive Officer
Thank you, Tony.
Operator
Our next question comes from the line of Suji Desilva with ROTH Capital. Please proceed with your question.
Suji Desilva -- ROTH Capital Partners -- Analyst
Good morning, Jeff, Dave, Ken. Congrats on the progress here. I just want to understand on the Wi-Fi 6E market, a lot of momentum here. And 6E, are those all tandem 5.5, 6.5 opportunities? And can you talk about what the Ultra Tri-Band product is? I don't know if I heard that term before.
Jeff Shealy -- Founder and Chief Executive Officer
OK. I'll -- let's let Dave start.
Dave Aichele -- Executive Vice President, Business Development
Yeah. Good morning, Suji. Thanks for the comment. Pretty much everything that -- well, not pretty much everything that we are shipping right now, both for Wi-Fi 6 and Wi-Fi 6E is tandem.
And the number of MIMO that you see in the 6E has increased, so traditional Wi-Fi 6 was 2 plus 2, sometimes 2 plus 4. What we're seeing primarily in the Wi-Fi 6E multi-user MIMO is 4 plus 4. And we're actually seeing some of that even go up to 8. So this tandem approach, depending on how they configure the system, it's multiple filters per system.
It could be eight going up to 12 and even higher. And the ASPs on these filters, the average selling price, is higher as well. So it's a good opportunity for us. And then what's reflective to the Ultra Tri-Band, that really is an architecture that we are enabling in the market that allows the transition of 50 megahertz bandwidth -- transition from UNII 4, which ends at a frequency of 5895 and the start of UNII 5, which starts at 5945.
So we are the only supplier filters in the market today that is in design phase and sampling, which we believe we'll production ramp next quarter, that will enable that 50 megahertz transition, which is significant because it enables the full utilization of UNII 1 through UNII 4 for the 5 gigahertz and then UNII 5 to UNII 8 for the 6 gigahertz.
Suji Desilva -- ROTH Capital Partners -- Analyst
Thanks, Dave.
Jeff Shealy -- Founder and Chief Executive Officer
OK. And yeah, let me add a couple of 
o depend on timing with the Chinese providers on I guess shifting back up to the higher frequency.
We're expecting really end of this year, first quarter of next year, so it's all going to be really driven by the time in the market. The good news is that we believe the chipset supply, particularly with the wider bandwidth is sampling and able to ramp as well, which has been part of what's hampered us. And then looking further out, our investment that we're looking at right now with the 5G U.S. market, we're going to be sampling toward the end of this year, but it takes a while to get designed into the infrastructure market so that will be a further ways out as well as the U.S.
market ramping.
Jeff Shealy -- Founder and Chief Executive Officer
So Tony, I'd like to add to Dave's comment, really, just for those of you not familiar with that Asian market. What has transpired there is, as Dave touched on, is this move to much significantly wider bandwidth. Initially, we saw specs in the 100 megahertz bandwidth range. Those have expanded out to 300 megahertz.
And so while we were ready to ramp with the portfolio that we announced up at 300 megahertz, there were some other -- as Dave mentioned, chipset availability was a challenge. Also some of the operator deployment focus was an issue. I did want to point out for the -- some of the milestones and -- or as a milestone in June, I don't think we advertised tremendously, but we did take the opportunity with this low to really make some improvements on the product portfolio and enhance some of the performance for that -- for our wide bandwidth filter portfolio. And then as Dave touched on, I want to make sure we brought in the C-band engagements.
Dave talked about sampling, but multiple customer engagements on the C-band that we're pretty excited about for the U.S. market.
Dave Aichele -- Executive Vice President, Business Development
Thanks for the color, guys. Best of luck.
Jeff Shealy -- Founder and Chief Executive Officer
Thank you, Tony.
Operator
Our next question comes from the line of Suji Desilva with ROTH Capital. Please proceed with your question.
Suji Desilva -- ROTH Capital Partners -- Analyst
 Good morning, Jeff, Dave, Ken. Congrats on the progress here. I just want to understand on the Wi-Fi 6E market, a lot of momentum here. And 6E, are those all tandem 5.5, 6.5 opportunities? And can you talk about what the Ultra Tri-Band product is? I don't know if I heard that term before.
Jeff Shealy -- Founder and Chief Executive Officer
OK. I'll -- let's let Dave start.
Dave Aichele -- Executive Vice President, Business Development
Yeah. Good morning, Suji. Thanks for the comment. Pretty much everything that -- well, not pretty much everything that we are shipping right now, both for Wi-Fi 6 and Wi-Fi 6E is tandem.
And the number of MIMO that you see in the 6E has increased, so traditional Wi-Fi 6 was 2 plus 2, sometimes 2 plus 4. What we're seeing primarily in the Wi-Fi 6E multi-user MIMO is 4 plus 4. And we're actually seeing some of that even go up to 8. So this tandem approach, depending on how they configure the system, it's multiple filters per system.
It could be eight going up to 12 and even higher. And the ASPs on these filters, the average selling price, is higher as well. So it's a good opportunity for us. And then what's reflective to the Ultra Tri-Band, that really is an architecture that we are enabling in the market that allows the transition of 50 megahertz bandwidth -- transition from UNII 4, which ends at a frequency of 5895 and the start of UNII 5, which starts at 5945.
So we are the only supplier filters in the market today that is in design phase and sampling, which we believe we'll production ramp next quarter, that will enable that 50 megahertz transition, which is significant because it enables the full utilization of UNII 1 through UNII 4 for the 5 gigahertz and then UNII 5 to UNII 8 for the 6 gigahertz.
Suji Desilva -- ROTH Capital Partners -- Analyst
Thanks, Dave.
Jeff Shealy -- Founder and Chief Executive Officer
OK. And yeah, let me add a couple of 