Industry Challenges: Mobile

Demand for higher power handling

  • With the shift to larger screens and larger batteries in mobile handsets, the space for antennas has been reduced and this has negatively impacted performance. In order to compensate, RF front-ends have countered by delivering an additional 1-2 dB of transmitted power – this has led to the need for RF front-ends with higher power handling
  • For example, T-Mobile’s High Power User Equipment (HPUE) requires Band 41 RF front-end chains to put out 3dB additional power in order to achieve better cell coverage. In the future, carriers in China could require 5G n41, n78, n77 and n79 to have a similar requirement thus posing a challenge to existing low power filter solutions.
  • HPUE power requirements are expected to extend to the new 5G spectrum operating in the 2.5 to 5GHz range.

Industry Challenges: Mobile

Demand for higher frequencies and bandwidth

  • 5G RF front-end needs to operate at frequencies higher than traditional sub 2.7GHz
  • 5G frequencies have wider bandwidth requirements compared to existing LTE bands
  • RF filters need to meet stringent bandwidth, co-existence & power handling requirements

Industry Challenges: WiFi

High frequency coexistence filtering solutions, all in a compact footprint

  • Proliferation of higher-order MU-MIMO driving number of RF filter placements
  • Larger bandwidth filtering needs with 802.11ax WiFi 6 and WiFi 6E
  • Need for compact footprint compared to bulky ceramic options
  • Need for higher frequency extending to 7.125 GHz filtering options

Industry Challenges: Infrastructure

Overcoming the demand for higher order Massive MIMO & Small Cell deployment

  • Proliferation of higher-order massive MIMO with active antennas driving number of RF filter placements and need for compact footprint compared to bulky cavity options
  • A higher need for cost-effective & high-volume SMT manufacturing
  • Wider bandwidth filtering requirements
  • Higher power handling requirements 1-10W average
  • Need for higher frequency, ultra-wideband filtering options meeting stringent spectral masks