2-2-1JEL

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Frequency Range:	70kHz ~ 200MHz
Impedance - Unbalanced/Balanced:	--
Phase Difference:	--
Insertion Loss (Max):	3.0dB
Return Loss (Min):	--
Package / Case:	6-SMD, J-Lead
Mounting Type:	Surface Mount

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2-2-1JEL Application Field and Working Principle Introduction Baluns are electrical components that are used to match the impedance between the two circuits connected to each other. They are commonly found in transmission lines and antennas, and are used to reduce the transmission losses between the two circuits. Baluns are also used in RF and microwave circuits, where they provide the necessary impedance matching for the efficient transfer of RF/microwave energy from one circuit to another. The 2-2-1JEL balun is a type of balun that is commonly used in antenna applications. This article provides an overview of the application fields and working principles of the 2-2-1JEL balun.Applications The 2-2-1JEL balun is used in a wide variety of applications. It is commonly used in the transmission lines of RF and microwave systems, such as those used in mobile communications, broadcast television, and satellite communications. It is also used in antenna applications, such as dipole or Yagi antennas, and in transceiver designs. Because of its small size and low cost, the 2-2-1JEL balun is also used in a variety of consumer electronics, including satellite receivers, digital radios, and cell phones.Design and Working Principle The 2-2-1JEL balun consists of two transmission lines, with one of the lines having a length of one half-wavelength, and the other having a length of two half wavelengths. The two transmission lines are connected in a balanced configuration, with the two lines being terminated with a bridged-T network at their end. This configuration ensures that the signals are balanced, i.e., the signals on both the lines are equal.When the 2-2-1JEL balun is used in transmission line applications, the balanced configuration prevents the flow of current to ground, and thus reduces losses in the system. In antenna applications, the balun is used to reduce the impedance of the antenna by matching the antenna\'s impedance with the impedance of the transmission line. The 2-2-1JEL balun also provides a low SWR (Standing Wave Ratio), which ensures that the RF energy is efficiently transferred from one circuit to the other.Advantages and Limitations The 2-2-1JEL balun has several advantages. It is small, lightweight, and inexpensive, and can be used in a wide variety of applications. It also provides excellent performance, with low insertion loss and high balance. Additionally, the 2-2-1JEL balun is easy to install and use.However, the 2-2-1JEL balun also has some limitations. It is limited by its operating frequency range, and the insertion loss increases significantly with lower frequency signals. Additionally, the 2-2-1JEL balun is sensitive to temperature, and may require additional cooling if used in high-power applications.Conclusion The 2-2-1JEL balun is a versatile, small, and inexpensive electrical component that can be used in a wide variety of applications. It is commonly used in transmission line and antenna applications, where it provides low insertion loss and high balance. Additionally, the 2-2-1JEL balun is easy to install and use, and provides excellent performance. However, the balun is limited by its operating frequency range and is susceptible to temperature changes.

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