The TW600 series from Tallysman are low noise amplifiers for GNSS that supports GPS, GLONASS, Galileo, and BeiDou satellite systems. These LNAs have been developed specifically for choke ring antennas and are available with two gain options: 35 dB and 50 dB with a noise figure of less than 2.5 dB. They require a supply voltage of 5 V DC and consume less than 50 mA of current. The LNAs have custom pre-filtering to suppress out-of-band interfering signals such as cellular LTE, Ligado, and Iridium satellite communications, while maintaining high third order intercept point and small group delay. They are designed for integration into existing choke ring antennas, upgrading them to receive the entire GNSS band. The amplifiers are available in a module that measures 98 x 93 x 17.6 mm with SMA connectors.
