Peregrine Semiconductor unveiled the UltraCMOS PE42462, PE42482 and PE42412 high-throw count, high-performance RF switches. With high port-to-port isolation, high linearity, low insertion loss and exceptional power handling, these SP6T, SP8T and SP12T absorptive switches are optimised for 4G and 4.5G wireless infrastructure switching applications such as robust digital pre-distortion (DPD) loops, filter banks and transmit/ receive (T/R) paths signal routing. In addition, these three RF switches cover a frequency range from 10 MHz to 8 GHz, making them ideal for 5 GHz LTE Licensed Assisted Access (LAA) and LTE Wi-Fi Link Aggregation (LWA).
The PE42462, PE42482 and PE42412 allow advanced linearisation techniques, such as DPD loops, to be used over a greater number of power amplifiers (PAs), maximising spectral efficiency and data throughput. Recent advancements in wireless base stations have increased RF complexity, resulting in the need for more PAs per antenna sector. However, these PAs, if not optimised, can be a drain on the system’s operational and capital expenditures. Linearisation techniques, such as DPD loops, are used to compensate for the PA’s non-linear behaviour and improve adjacent channel power ratio (ACPR) in wireless base stations.
Additionally, a high-throw count switch, like the PE42462, PE42482 and PE42412, enables a DPD loop to be leveraged over a greater number of PAs. However, this high-throw count switch must meet stringent performance requirements in order to preserve the integrity of the monitored signal. Within the closed loop, the switch must have low insertion loss, high port-to-port isolation and high linearity to enable the single DPD receiver to accurately sample multiple transmit paths. Peregrine’s new switches deliver exceptional performance in a high-throw count configuration with no added noise or interference.
Each high-throw count switch delivers high linearity of 60 dBm IIP3, exceptional power handling of 33 dBm continuous wave (CW) and a fast switching time in the 200 nanosecond range. The PE42462 and PE42482 are offered in 24-lead 4 x 4 mm QFN package, while the PE42412 is available in a 32-lead 5 x 5 mm QFN package.
For more information contact Andrew Hutton, RF Design, +27 (0)21 555 8400, [email protected], www.rfdesign.co.za
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