What is the expected growth rate for the 5G base station market in fiscal year 2021 
forms. We currently expect stronger second half PON demand as PON tenders for this year in China indicate unit volumes similar to calendar year '18 volumes. However the medium term impact of the Huawei ban on our PON demand will not be clear for another quarter.
Our wireless base station demand was also weak in Q1, and we expect this business to also be negatively impacted in Q2, due to the Huawei ban. For FY '20, we expect to see further spending on 4G deployments as well as the ongoing ramp of 5G platforms throughout the year, with stronger growth expected in FY '21. We remain excited about our market opportunity for 5G base stations, which we believe could more than double from 4G and due to the larger volumes and additional content as we expect most optical links to require CDRs.
Despite the current challenges faced by our Signal Integrity Products Group in this fiscal year, we remain very confident in our strategy. And expect our SIP Product Group to grow nicely over the next few years, driven by the ongoing expansion of cloud and hyperscale data centers, the global transition to 5G base stations, and the acceleration of 10 gig PON deployments.
For Q2 of fiscal year '20, we expect net revenues from our Signal Integrity Product Group to be approximately flat.
Moving on to our Protection Product Group. In Q1 of fiscal year '20, net revenues from our Protection Product Group declined 8% over the prior quarter, and represented 30% of total net revenues. Demand from all end markets remained relatively weak in Q1. Our automotive protection business gained momentum in Q1, and reflects the need for high performance protection used in Advanced Driver Assistance Systems. Semtech's superior protection performance including that of our recently announced our RClamp3552TQ enables our customers to offer enhanced robustness for infotainment systems, incorporating ADAS functions.
Additionally newer high speed interfaces such as USB 3.1 Type C, 10-gig Ethernet and HDMI 2.1 are rapidly proliferating across all end markets and applications. As a result, we see growing demand for our high performance protection platforms that address these interfaces.
Our Protection Products Group remains focused on diversifying from the high end consumer market to the broader industrial markets, where there is an increasing usage of more advanced lithography devices. We believe our investments in these broader markets will enable us to diversify our business over the next few years.
In Q2 of fiscal year '20, we expect our protection business to increase as demand from the broad-based industrial end market is expected to recover.
Turning to our Wireless and Sensing Products Group. In Q1 of fiscal year '20, net revenues from our Wireless and Sensing Products Group decreased 9% sequentially and represented 32% of total net revenues. Weaker demand from the industrial end markets contributed to the decline. Despite the recent softness in our Wireless and Sensing business, due to a weak China demand environment, we do expect to see improving demand throughout the rest of the year.
Our LoRa momentum continues to build and we are seeing very exciting momentum across the globe underlined by some of the key lower metrics we track. These include the number of public or private LoRa network operators increased in Q1 to approximately 113 from 100 at the end of fiscal year '19. We now expect a 130 LoRa network operators by the end of fiscal year '20. The number of countries with LoRa networks grew to more than 74 countries. By the end of fiscal year '20, we expect over 90 countries to have LoRa networks.
The estimated number of LoRa gateways deploy increased to more than 300,000. These gateways will support approximately 1.5 billion connected end nodes. We expect the number of LoRa gateways deployed to exceed 500,000 by the end of fiscal year '20 supporting a LoRa end mode capacity of over 2 billion end nodes. The estimated cumulative number of LoRa end nodes deployed -- increased to approximately 97 million. We expect this number to exceed 140 million by the end o
forms. We currently expect stronger second half PON demand as PON tenders for this year in China indicate unit volumes similar to calendar year '18 volumes. However the medium term impact of the Huawei ban on our PON demand will not be clear for another quarter.
Our wireless base station demand was also weak in Q1, and we expect this business to also be negatively impacted in Q2, due to the Huawei ban. For FY '20, we expect to see further spending on 4G deployments as well as the ongoing ramp of 5G platforms throughout the year, with stronger growth expected in FY '21. We remain excited about our market opportunity for 5G base stations, which we believe could more than double from 4G and due to the larger volumes and additional content as we expect most optical links to require CDRs.
Despite the current challenges faced by our Signal Integrity Products Group in this fiscal year, we remain very confident in our strategy. And expect our SIP Product Group to grow nicely over the next few years, driven by the ongoing expansion of cloud and hyperscale data centers, the global transition to 5G base stations, and the acceleration of 10 gig PON deployments.
For Q2 of fiscal year '20, we expect net revenues from our Signal Integrity Product Group to be approximately flat.
Moving on to our Protection Product Group. In Q1 of fiscal year '20, net revenues from our Protection Product Group declined 8% over the prior quarter, and represented 30% of total net revenues. Demand from all end markets remained relatively weak in Q1. Our automotive protection business gained momentum in Q1, and reflects the need for high performance protection used in Advanced Driver Assistance Systems. Semtech's superior protection performance including that of our recently announced our RClamp3552TQ enables our customers to offer enhanced robustness for infotainment systems, incorporating ADAS functions.
Additionally newer high speed interfaces such as USB 3.1 Type C, 10-gig Ethernet and HDMI 2.1 are rapidly proliferating across all end markets and applications. As a result, we see growing demand for our high performance protection platforms that address these interfaces.
Our Protection Products Group remains focused on diversifying from the high end consumer market to the broader industrial markets, where there is an increasing usage of more advanced lithography devices. We believe our investments in these broader markets will enable us to diversify our business over the next few years.
 In Q2 of fiscal year '20, we expect our protection business to increase as demand from the broad-based industrial end market is expected to recover.
Turning to our Wireless and Sensing Products Group. In Q1 of fiscal year '20, net revenues from our Wireless and Sensing Products Group decreased 9% sequentially and represented 32% of total net revenues. Weaker demand from the industrial end markets contributed to the decline. Despite the recent softness in our Wireless and Sensing business, due to a weak China demand environment, we do expect to see improving demand throughout the rest of the year.
Our LoRa momentum continues to build and we are seeing very exciting momentum across the globe underlined by some of the key lower metrics we track. These include the number of public or private LoRa network operators increased in Q1 to approximately 113 from 100 at the end of fiscal year '19. We now expect a 130 LoRa network operators by the end of fiscal year '20. The number of countries with LoRa networks grew to more than 74 countries. By the end of fiscal year '20, we expect over 90 countries to have LoRa networks.
The estimated number of LoRa gateways deploy increased to more than 300,000. These gateways will support approximately 1.5 billion connected end nodes. We expect the number of LoRa gateways deployed to exceed 500,000 by the end of fiscal year '20 supporting a LoRa end mode capacity of over 2 billion end nodes. The estimated cumulative number of LoRa end nodes deployed -- increased to approximately 97 million. We expect this number to exceed 140 million by the end o