Two trends continue in recent Wi-Fi system developments. One is the increase in RF transmitter power to improve coverage range and signal quality, the other is the use of more complex modulation to boost data throughput. Both trends place more stringent requirements on the power handling and linearity of the RF components in the transmission path to meet regulatory and signal integrity requirements. The RF switches at the antenna ports are critical components, as they can limit system performance. While more integrated front-end-modules are increasingly being used, particularly for applications with limited space, discrete MMIC switches still offer the most flexibility, for both performance and system configuration.
To address these demanding requirements, CEL developed the CG2409X3, a high power single pole double throw (SPDT) GaAs MMIC switch. Intended for wireless systems where high power capability is required, the CG2409X3 covers 50 MHz to 6 GHz and has a 0.1 dB compression point of 37.5 dBm at 3 V control voltage. The second and third harmonics are −80 dBc and −85 dBc, respectively, with 26 dBm input power. Insertion loss is 0.3 to 0.6 dB, while isolation ranges from 32 to 28 dB over the frequency range. The switch operates with a control voltage from 1.8 to 5 V and is available in a compact 6-pin XSON package measuring 1.5 mm x 1.5 mm x 0.37 mm.
The CG2409X3 is manufactured using state-of-the-art PHEMT technology and is assembled and tested in Japan, assuring high quality and reliability. The switch is a drop-in replacement for the Renesas uPG2409T6X, which is being phased out.
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