Summitek Instruments has upgraded the hardware design of its passive intermodulation analyzers, used to test radio-frequency components used in base stations. The new architecture includes an RF module for frequency generation and signal reception; a power-amplifier module for generating high-power signals; and a front-end module for combining two high-power signals into a single RF path. The analyzers operate in the 150 MHz to 3600 MHz band, according to the company.