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Intermodulation distortion testing in passive devices
Passive intermodulation (PIM) is a form of intermodulation distortion that occurs in passive components such as antennas, cables, connectors, or duplexers with two or more high-power input signals. PIM in the transmission path degrades quality of the wireless communication system.
PIM is a critical parameter in wireless communications systems due to the use of higher RF transmission power, multiband operation with a shared common antenna, or wider bandwidth signals with higher probability of PIM in the receiver band.
The Rflight NTPIM-XXXX Series PIM test system utilizes Keysight power meters and spectrum analyzers In order to test for the intermodulation of passive devices. The maximum output power of the test port is over +48dBm, with +53dBm available as an option, maximum intermodulation distortion accuracy is -168dBc.
The PIM test system can be used for the mobile frequency bands: 700BAND, 00800, CDMA800, EGSM900, GSM900, DCS1800, TD-SCOMA , PCS1900, TD-SCDMA2000, WCDMA2100, and LTE2600. It can be used to test intermodulation distortion IMD3, 5, 7, 9, 11 with IMD3 distortion accuracy of over -173dBc.
The Rflight PIM test systems were designed and built at the request of China Telecommunications Technology Labs (CTTL). The design incorporates TD-SCDMA intermodulation test modules that are the only officially approved for testing through an RF switch matrix controller.
The system has a clear logical design, excellent accuracy, effective heat management, easy operation and high reliability.
Rflight is a qualified supplier to Huawei, Nokia, Ericsson, ZTE for power amplifier testing and PIM test systems. Rflight systems are widely used in China Mobile and at all of the 3rd party inspection laboratories in China.
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