DB0218LW2

RF Mixers

The DB0218LW2 is a compact and reliable mixer developed by the renowned German company RF-Link GmbH. It is mainly used in the field of radio-frequency (RF) telecommunications. It is widely used in RF communication systems, broadcast systems, military, and microwave sources, and for noise suppression in RF receivers.

Application field

The DB0218LW2 is mainly used in RF communication systems. It can be used as a mixer that changes the phase and frequency of the signal, as well as an upconverter or downconverter that converts signals between different frequency bands. The mixer can also be used as a frequency doubler or halver and a power combiner or splitter. It is highly suitable for use in radio systems in which the RF signals, as well as the noise generated by interfering signals, have to be accurately processed. Additionally, it is also used in broadcast systems, military, and microwave sources, and for noise suppression in RF receivers.

Working principle

The DB0218LW2 uses a double-balanced active mixer technology. This type of mixer structure is designed to have the low noise figure and excellent linearity in order to minimize the amount of distortion in the signal. The double-balanced mixer consists of two dual-gate Field Effect Transistor (FET) transistors connected in parallel and placed between the input and output ports. The two input signals, the Local Oscillator (LO) signal and the RF signal, are applied to the gates of the FETs. The LO signal modulates the input RF signal and the resulting RF output is composed of instantaneous frequency changes derived from the mixing of the input and LO signals.

The balanced mixer design also minimizes the effect of common-mode signals and the generated sidebands are reasonably low. The resulting RF output is relatively clean because the LO and RF signals are applied to both FET gates. This double-balanced mixer provides high linearity and low noise in mixer applications.

Conclusion

The DB0218LW2 is a compact and reliable RF mixer manufactured by RF-Link GmbH. It is widely used in RF communication systems, broadcast systems, military, and microwave sources, and for noise suppression in RF receivers. It utilizes a double-balanced active mixer technology to provide excellent linearity and low noise figure. This makes the mixer a highly effective solution for accurately performing signal processing in RF applications.