dbm to power conversion

Conversion of wireless power mW and DBM and interpretation of common symbols 1. Conversion of power unit mW and DBM The RF signal output by the radio transmitter is transmitted to the antenna through a feeder

The RF signal of the radio transmitters output is transmitted to the antenna via a feeder (cable) and radiated out by the antenna in the form of electromagnetic waves. ElectromagneticWhen the wave arrives at the receiving location, it is received by the antenna (only a small fraction of the power is received) and sent to the radio receiver via the feeder.Therefore, it is very important to calculate the transmitting

Decibel (decibel,db) is a ratio function that operates on dimensionless parameters: DB=˙10LOG10 (x), where x is unitless D B =˙10 l o G Ten (x), where x is unitless dB \dot = Ten log_{10} (x), \quad \text{ Where $x $ is unitless} For example, the amplifier gain is a dimensionless value, which is the ratio of output power to input power: Poutpin=gtherefore Gain in db =10log10g=˙g (DB) P o u t p i n = g ther

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WWW why cooling time follow power supply related recommendationsThe Frequency Conversion Power Supply can run normally for a long time without the regular maintenance and maintenance by the user. Just like if the air conditioner is used for a long time without cleaning and maintenance, its cooling effect will be reduced, which is why many people do not know why t

The day before yesterday to convert back to the background of the data returned, is the scientific calculation of the number of characters, using online can search for the common two methods of conversion will have a multiple limit, and then searched for a long time, or did not find a good method, although there are some of their own methods of writing, Can still not be like the following two methods can be normal

The frequency conversion power supply is a live product. In order to avoid the touch of unfamiliar people or children without knowing it, you can avoid security risks. To prevent these security risks, you need to install a protection structure for the frequency conversion power supply. The frequency

Although the various advantages of the Frequency Conversion Power supply can be widely used in various industries, the frequency conversion will generate a kind of Power Harmonic that has some harm to the machine equipment during operation. What kind of harm will this harmonic wave cause to peripheral electrical equipm

Frequency Power Supply after the 5-level phase shifting superposition, the output voltage is displayed as an ideal step-by-step staggered state, which achieves high-quality power output and greatly reduces the impact of voltage Pulsation on the motor winding. Under this PWM control method, the switching frequency of the power device is 10 times the equivalent sw

"topic link"Click here~~"The main topic"Jzzhu have invented a kind of sequences, they meet the following property: You is given x and y, please calculate fn modulo1000000007 (Ten9?+?7)."problem-solving ideas"/*a-jzzhu and sequencescodeforces 450b-jzzhu and sequences (Matrix fast power)given F1 and F2, ask for FNAnalysis:Special Award F1,f2when n>=3 is used, the matrix is quickly idempotent .convert the formula to get a transformation matrixby

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