SKY13405-490LF

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Radio frequency (RF) switches are electronic components used in the design of communication systems. They are used to control, switch, and direct signals and have a wide range of applications in a variety of sectors. This article will focus on the application field and working principle of the SKY13405-490LF – an RF switch used in mobile radios and other communication systems.

The SKY13405-490LF is an inexpensive and small size switch with a stable and low profile operation for high frequency ranges. It can be used in a variety of applications ranging from mobile stations to base stations, and its wide operating temperature range makes it an ideal choice for outdoor operations. The switching element of this device is a four-pole latching relay, and its operating voltage is 12V. The device is made up of a relay driving circuit, a power prancing circuit, a stable regulator voltage and other system components.

In terms of its working principle, the SKY13405-490LF works on a latching relay. The latching relay is actuated by a 12V current, which then enables it to hold the switch in either the "on" or "off" position. When the current is cut off, the switch then returns to its starting position. The advantage of this type of switch is that it does not require power to maintain the switch in its position, and it also eliminates noise due to its low contact bounce.

This RF switch also features a low insertion loss of less than 0.2dB for Lateral Displacement between the Antenna port and the mobile device port. This low insertion loss allows for a reliable and high-quality transmission of signals compared to other switches. This makes it a great choice for applications that require good reception and minimal interference. In addition, the switch also has a wide -110 dBm isolation, and has been tested to sustain high levels of vibration and shock.

The SKY13405-490LF also features quick response and switching time of 1ms, making it the suitable choice for applications that requires fast engagement and disengagement. The switch also features a low power consumption of less than 0.06W when the control voltage is 12V. This allows the switch to be used in portable devices and mobile radios.

This RF switch is also designed with a reverse voltage protection for the control voltage, which protects the switching circuit from being damaged in case of a differential voltage or power arcing. The SKY13405-490LF has an external interfacing that has four pins, and is heat sinkable, which allows for better thermal management of the switch in high ambient temperatures.

Overall, the SKY13405-490LF is a great choice of switch for applications where a reliable, low insertion loss and wide coverage are needed. It is also lightweight, economical, and has a low power consumption, making it ideal for portable devices and mobile radios. The switch is designed to have a fast switching time and reverse voltage protection, as well as a wide -110 dBm isolation, allowing the signal to be transmitted with no interference or loss of strength.

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