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Our ServiveIndustry CommunicationTesting of passive devices
Testing of passive devices
RF performance of passive devices
        Passive devices are significant the microwave technology, serving as an important type of microwave RF devices. We can test the RF performance of passive devices comprehensively according to the test specifications about the indexes of passive devices given by their operators and manufacturers.
 
Type of passive device Passive device Test item Test standard
Electrical property test of passive devices Power divider Total insertion loss, passband ripple, standing-wave ratio, input reflection intermodulation and power capacity GB/T 21021-207
Coupler Total insertion loss, passband ripple, coupling deviation, input/output standing-wave ratio, isolation, input reflection intermodulation and power capacity IEC 62037
3dB bridge Insertion loss, passband ripple, input/output standing-wave ratio, isolation, input reflection intermodulation and power capacity GB 15491-2008
Attenuator  Input standing-wave ratio, passband ripple, attenuation value, attenuation accuracy, input reflection intermodulation and power capacity YD/T 640-2012
Load  Input standing-wave ratio, input reflection intermodulation and power capacity YD/T 1967-2009
Combiner  Input standing-wave ratio, insertion loss, passband ripple, out-of-band rejection, input reflection intermodulation and power capacity QZTT 1003.2-2014
POI system Insertion loss, passband ripple, standing-wave ratio, isolation, intermodulation rejection and power capacity QZTT 1003.3-2014

Reliability test
        The materials and processing technologies used in the production of passive devices influence the electrical property of passive devices greatly and the stability and lives of passive devices directly. However, for smaller costs, some manufacturers use cheap materials and poor processing technologies in the production of passive devices. As a result, performance of the passive devices declines dramatically after some time of use, in spite of its compliance at the time or delivery. This is because that the materials and processing technologies used cannot enable passive devices to operate with large power for a long time. At present, the passive devices on the market are of varying quality. Our environment and reliability center has great testing capability and can meet the reliability test demand of passive devices. 
 
Items of high/low temperature test
Passive device Online test Intermediate test Test after restoration to room temperature Test after vibration
Cavity power divider Insertion loss and standing-wave ratio Intermodulation Appearance inspection Appearance inspection, insertion loss, standing-wave ratio and intermodulation
Cavity directional coupler Insertion loss and standing-wave ratio Intermodulation Appearance inspection Appearance inspection, insertion loss, standing-wave ratio and intermodulation
Cavity 3dB bridge Insertion loss and standing-wave ratio Intermodulation Appearance inspection Appearance inspection, insertion loss, standing-wave ratio and intermodulation
Combiner  Insertion loss, standing-wave ratio, passband ripper and out-of- band attenuation Intermodulation Appearance inspection Appearance inspection, insertion loss, standing-wave ratio, passband ripper, out-of- band attenuation and intermodulation
Load  Standing-wave ratio Intermodulation Appearance inspection Appearance inspection, standing-wave ratio and intermodulation

 

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