19 Qorvo 2022
Qorvo QPQ2200Q
5855-5925MHz
RF BAW Filter
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Figure 8: Global ETC spectrum coexistence with V2X. (Source: Qorvo)
Figure 9: Europe: Comparison of spectrum emissions mask—with and without ETC notch filter. (Source: Qorvo)
Figure 10: China: Comparison of spectrum emissions
mask—with and without ETC notch filter. (Source: Qorvo)
Two of the parameters that characterize high-performance filter
products are the resonator qualities, i.e. quality factor (Q) and coupling
factor (k2). High Q is necessary to minimize insertion loss, while high k2
enables wider bandwidth. Technology advances at the resonator level
have helped improve insertion loss and high selectivity performance with
wider bandwidth filter products at frequencies up to 6GHz.
Conclusion
A combination of high-Q band pass and notch filters offers the most
complete solution to coexistence challenges in the design of autonomous
vehicles. Based on the data discussed above, LTCC filters are not
true coexistence filters and do not work in the unique automotive
environment where Wi-Fi and V2X are situated next to each other.
The seamless coexistence of all the technologies on the connected car
spectrum, enabled by advanced BAW band pass and notch pass filtering
solutions, will ensure that our increasingly mobile world is safer, more
reliable, and more enjoyable.
