Antenna

An antenna for transmitting the radio apparatus or receive electromagnetic components. Radio communication , radio, television , radar, navigation , electronic countermeasures , remote sensing, radio astronomy and other engineering systems , all use

Posted at 13-07-27 by Sky views(13129)

The ratio of the total input power of the antenna is called the maximum gain factor of the antenna. It is a more comprehensive reflection of the antenna's effective utilization of the total radio frequency power than the antenna directivity coefficie

Posted at 21-07-12 by SKYSKY views(873)

We do terminal blocks and know that the interface is very important to the engineer. This article is very useful to the engineer. First, he introduced the definition of the interface: an abstraction provided by the entity to the outside world to sepa

Posted at 21-07-14 by SKYSKY views(534)

This article describes the connotation of IPTV, and through its technical analysis, it explains that IPTV plays an important role in the development of broadband networks. Keywords: IPTV, triple play, next generation network NGN 1 Introduction In

Posted at 21-07-13 by SKYSKY views(492)

When designing with an analog-to-digital converter (ADC), it is easy to mistakenly believe that reducing the input signal to meet the full-scale range of the ADC will cause a significant decrease in the signal-to-noise ratio (SNR). 　　 System designe

Posted at 21-07-13 by SKYSKY views(572)

C (F): the nominal capacity of the supercapacitor; R (Ohms): the nominal internal resistance of the supercapacitor; ESR (Ohms): equivalent series resistance under 1KZ; Vwork (V): normal working voltage Vmin (V): cut-off working voltage; t(s): co

Posted at 21-07-13 by SKYSKY views(683)

3.1. Serial UART 1. RS232 Full duplex, point-to-point, several meters. The asynchronous transmission standard interface developed by the Electronic Industries Association (EIA). Usually the RS-232 interface appears in the form of 9 pins (DB-9) or

Posted at 21-07-13 by SKYSKY views(906)

1. TRS interface Most people may not know what it is at first hearing, but as long as you put the real thing in front of you, everyone will know what it is. In fact, the most common thing we see in daily life is the TRS connector. Its connector appea

Posted at 21-07-13 by SKYSKY views(365)

1. Introduction to rs485 　　RS485 is a standard that defines the electrical characteristics of drivers and receivers in a balanced digital multipoint system. The standard is defined by the Telecommunications Industry Association and the Electronics I

Posted at 21-07-13 by SKYSKY views(604)

1 year (yr) = 52.1428523 weeks (week) 1 year (yr) = 365 days (d) 1 week (week) = 7 days (d) 1 day (d) = 24 o'clock (h) 1 o'clock (h) = 60 minutes (min) 1 minute (min) = 60 seconds (s) 1 second (s) = 1000 milliseconds (ms) 1 millisecond (ms) =

Posted at 21-07-13 by SKYSKY views(391)