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PXI RF Switches Beat 2.1 dB Insertion Loss

To help engineers optimize their RF switch networks, 11 PXI RF switches have been spawned. The modules, which target 50- and 75-Ω RF applications, include 4 X 1, terminated 4 X 1, dual 4 X 1, and 8 X 1 multiplexers as well as quad single-pole, double-throw (SPDT) and dual-terminated SPDT general-purpose configurations. All 11 modules offer insertion loss of less than 2.1 dB at the specified bandwidth. Their voltage-standing wave ratio (VSWR) is less than 1.75:1 across the full bandwidth. The modules also offer relay count tracking. With this feature, engineers can keep track of relay closures on board the hardware. They can estimate the lifetime of individual relays on the module and avoid unexpected system downtime. The six 2.5-GHz, 75-Ω modules target high-frequency video applications, such as set-top-box testing. The five 2.7-GHz, 50-Ω modules are well suited for routing signals between DC and 26.5 GHz. They also can be used to expand the channel count of RF generators or analyzers. Engineers can program all of the new switches using the NI-SWITCH driver software for basic relay operations in common development environments. The switch modules are priced from $1099.

National Instruments, 11500 N. Mopac Expwy., Austin, TX 78759-3504; (800) 258-7022, FAX: (512) 683-9300, Internet:

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