What is the expected revenue growth rate for the company in 2021-Q4 
 taking my question. In regard to the new product releases, you mentioned six this upcoming calendar year, how should we think about the new product releases split between resonators, clock ICs and oscillators? And are these products targeting specific end markets?
Rajesh Vashist -- Chief Executive Officer
Yeah, I think, the end markets point is back in. They're heavily focused on coms enterprise market, followed by the IoT and mobile markets. So I think, we're sort of -- we've talked before about sort of that products that we develop for the coms enterprise market today are used a little bit later in automotive and a little bit later again in mil/aero, as well as industrial. So in other words, think of the coms enterprise market as the sort of feeder for these other markets.
On the other side, the products developed for mobile IoT are also feeders into automotive, feeders into consumer, feeders into industrial. So the second category that we are bringing products out for is mobile IoT. As far as splitting it up by clocking and oscillators, the bulk of the products are oscillators followed by clocks. At this point, we are not focusing, as I said before, that much investment on the resonators, primarily because they're the lowest priced product.
They're typically priced below $0.20 in comparison to our other products, which are anywhere from $1 to $20. So we think bang for the buck, that's the way to go.
Sabrina Baxamusa -- William Blair and Company-- Analyst
Thank you. That's helpful.
Rajesh Vashist -- Chief Executive Officer
Great. Thanks, Sabrina.
Operator
Our next question comes from Quinn Bolton with Needham.
Quinn Bolton -- Needham and Company -- Analyst
Hi. Just wanted to sort of follow up on the gross margin question. I realized you're not guiding beyond the March quarter. But as we think through some of the dynamics that the higher wafer pricing gets sort of captured in inventory in Q1 doesn't really start to hit the income statement until Q2, as you mentioned.
I'm wondering, does it all hit in Q2? Or do you see sort of an additional pressure into the third quarter? I ask because typically, in the second half, you noted the stronger second-half revenue and you tend to see better absorption. And so, all things equal, usually, your gross margin has a lift in the second half of the year just with revenue. So I'm just trying to think through the puts and takes for gross margin as you look into Q2 and Q3.
Art Chadwick -- Chief Financial Officer
Yeah, fair question. So yeah, I mean, the full brunt of the cost increases hit in Q2 because essentially, we run with about a quarter's worth of inventory. So it takes about three months to go from a wafer all the way to finished goods and shipment. So the full brunt in Q2.
What happens in the back half of the year, I don't wanna be that specific yet. It's only the beginning of February. But your comment is valid in that with the higher expected revenue that will give us more leverage on our manufacturing overhead. So all else being equal, that would argue for some improved margins in the back half of the year, at least compared to Q2.
So let me leave it at that as we march through the year, I'll be a lot more specific on our guidance and where we think it goes. Bottom line, I don't think we're too worried about gross margins. Again, we've got some flexibility to raise prices if we choose to. We've chosen not to in many cases.
I think, we're looking at some very high growth rates this year. As I mentioned, we expect to grow revenue at least, and I will emphasize the at least 35%. And that means that it could be higher than that. And that also would improve gross margins.
So a couple of different concepts in there, but very, very fair question.
Quinn Bolton -- Needham and Company -- Analyst
Got it. And then just, Rajesh, you mentioned XCalibur active resonator product line. Wondering if you could give us some sense, one, timing, when do you think these might start to contribute to revenue? And perhaps more importantly, you mentioned, I think, an answer to another question that y
 taking my question. In regard to the new product releases, you mentioned six this upcoming calendar year, how should we think about the new product releases split between resonators, clock ICs and oscillators? And are these products targeting specific end markets?
Rajesh Vashist -- Chief Executive Officer
Yeah, I think, the end markets point is back in. They're heavily focused on coms enterprise market, followed by the IoT and mobile markets. So I think, we're sort of -- we've talked before about sort of that products that we develop for the coms enterprise market today are used a little bit later in automotive and a little bit later again in mil/aero, as well as industrial. So in other words, think of the coms enterprise market as the sort of feeder for these other markets.
On the other side, the products developed for mobile IoT are also feeders into automotive, feeders into consumer, feeders into industrial. So the second category that we are bringing products out for is mobile IoT. As far as splitting it up by clocking and oscillators, the bulk of the products are oscillators followed by clocks. At this point, we are not focusing, as I said before, that much investment on the resonators, primarily because they're the lowest priced product.
They're typically priced below $0.20 in comparison to our other products, which are anywhere from $1 to $20. So we think bang for the buck, that's the way to go.
Sabrina Baxamusa -- William Blair and Company-- Analyst
Thank you. That's helpful.
Rajesh Vashist -- Chief Executive Officer
Great. Thanks, Sabrina.
Operator
Our next question comes from Quinn Bolton with Needham.
Quinn Bolton -- Needham and Company -- Analyst
Hi. Just wanted to sort of follow up on the gross margin question. I realized you're not guiding beyond the March quarter. But as we think through some of the dynamics that the higher wafer pricing gets sort of captured in inventory in Q1 doesn't really start to hit the income statement until Q2, as you mentioned.
 I'm wondering, does it all hit in Q2? Or do you see sort of an additional pressure into the third quarter? I ask because typically, in the second half, you noted the stronger second-half revenue and you tend to see better absorption. And so, all things equal, usually, your gross margin has a lift in the second half of the year just with revenue. So I'm just trying to think through the puts and takes for gross margin as you look into Q2 and Q3.
Art Chadwick -- Chief Financial Officer
Yeah, fair question. So yeah, I mean, the full brunt of the cost increases hit in Q2 because essentially, we run with about a quarter's worth of inventory. So it takes about three months to go from a wafer all the way to finished goods and shipment. So the full brunt in Q2.
What happens in the back half of the year, I don't wanna be that specific yet. It's only the beginning of February. But your comment is valid in that with the higher expected revenue that will give us more leverage on our manufacturing overhead. So all else being equal, that would argue for some improved margins in the back half of the year, at least compared to Q2.
So let me leave it at that as we march through the year, I'll be a lot more specific on our guidance and where we think it goes. Bottom line, I don't think we're too worried about gross margins. Again, we've got some flexibility to raise prices if we choose to. We've chosen not to in many cases.
I think, we're looking at some very high growth rates this year. As I mentioned, we expect to grow revenue at least, and I will emphasize the at least 35%. And that means that it could be higher than that. And that also would improve gross margins.
So a couple of different concepts in there, but very, very fair question.
Quinn Bolton -- Needham and Company -- Analyst
Got it. And then just, Rajesh, you mentioned XCalibur active resonator product line. Wondering if you could give us some sense, one, timing, when do you think these might start to contribute to revenue? And perhaps more importantly, you mentioned, I think, an answer to another question that y