An attenuator is an energy consuming component that becomes heat after power consumption. It is conceivable that the power capacity of the attenuator is determined after the material structure is determined. If the attenuator's power exceeds this limit, the attenuator will be burned. Power capacity must be clarified when designing and using. Callback loss: The callback loss is the standing wave ratio of the attenuator, and the input and output standing wave ratio at both ends of the attenuator should be as small as possible. The attenuator we want is a power consuming component that does not affect the circuit at both ends, that is, it matches the circuit at both ends. This factor should be considered when designing the attenuator. 1) Attenuation: Used to describe the amount of signal reduction from one end to the other during transmission. It can be expressed in multiples or decibels. 2) VSWR: is equal to the ratio of the characteristic impedance to the load impedance connected to the output of the transmission line. 3) Maximum average power: The maximum power that can be applied to the input of the attenuator for a long time at the specified maximum operating temperature when the characteristic impedance of the attenuator is connected. When the operating temperature drops to 20oC and the input power drops to 10mW, the other indicators of the attenuator should not change. 4) Power factor of insertion loss: The change value (dB) of the insertion loss when the input power is from 10 mW to the rated power. 5) Maximum peak power: The maximum peak power of the 5ms pulse width applied to the attenuator input at the specified maximum operating temperature for the specified maximum operating temperature at the output of the attenuator. When the operating temperature drops to 20oC and the input power drops to 10mW, the other indicators of the attenuator should not change. 6) Temperature coefficient: The maximum change in insertion loss over the maximum operating temperature range, expressed in dB/oC. 7) Impact and vibration: The attenuator must withstand shock and vibration tests in three directions. 8) Frequency response of insertion loss: The amount of change in loss (dB) over the entire frequency range at 20oC. 9) Upper operating temperature: The maximum temperature (oC) at which the attenuator operates at maximum input power. 10) Deviation of nominal insertion loss: deviation of the insertion loss and the nominal value measured at 20oC and input power of 10mW. 11) Joint life: The number of normal connections/disconnections; all electrical and mechanical indicators within the specified life should meet the requirements of the indicator. 12) Intermodulation distortion: Intermodulation distortion consists of spurious signals, which are caused by nonlinear factors in the device. Of particular concern is the third-order intermodulation distortion, since the third-order intermodulation products are the largest and cannot be filtered out. The third-order intermodulation level is tested by injecting two equal-amplitude clean signals (f1 and f2) into the device under test. The third-order intermodulation will appear at 2f1-f2 and 2f2-f1 of the output spectrum. The third-order intermodulation product is defined by the size relative to f1 or f2 and is represented by -dBc. 1) Control power level: The local oscillator output power is controlled in the microwave superheterodyne receiver to obtain the best noise figure and conversion loss to achieve the best reception effect. In the microwave receiver, automatic gain control is implemented to improve the dynamic range. 2) Decoupling component: acts as a decoupling component between the oscillator and the load. 3) Relative standard: as a relative standard for comparing power levels. 4) The hopping attenuator used in radar anti-interference: it is a variable attenuator with a sudden change in attenuation. It usually does not introduce attenuation. When it encounters external interference, it suddenly increases attenuation. From a microwave network perspective, the attenuator is a two-port, lossy microwave network. It is a pass-through microwave component. Compared with traditional engineering and business education projectors, home projectors are more compact, practical and entertaining, and projection technology is more suitable for home life and entertainment scenes Home Projectors,Production Projector,Home Theater Projectors,Bluetoth Battery Projector Shenzhen Happybate Trading Co.,LTD , https://www.happybateprojectors.com
Features
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