HMC-MDB171

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Radio frequency (RF) mixers are an essential element in nearly all radio frequency systems due to their vital role in achieving the desired signal. A variety of mixers are available in the market for catering to various specific demands and requirements of systems. One such type of RF mixer is the HMC-MDB171 from Analog Devices. This article will offer an overview of the application field and working principle of the HMC-MDB171.

The HMC-MDB171 is an integrated diplexer with mixer, built using PIN diode switches and Silicon Germanium (SiGe) HBT attenuators. This mixer is designed to comply with the requirements of Military and Space Systems (MSS). It is suitable for applications where high linearity, high isolation, and excellent performance over a wide frequency range are desired. The mixer operates from 33.5 GHz to 44GHz, and has an IIP3 of 18 dBm, a noise figure of to 5 dB, standing wave ratio of 18 dB, isolation of greater than 20 dB, and an insertion loss of less than 7 dB.

The HMC-MDB171 is best suited for use in military and space applications such as radar systems, satellite communication systems, and notably for L-Band Tactical Data Link (TD) systems. In addition to this, it is also used as a switch in wireless communications systems, and in receiver, transmitter, and spectrum measuring systems. It is also very useful for its specific manipulation of two signals with different frequency ranges, enabling it to perform in single and dual frequency applications.

The working principle of the HMC-MDB171 is relatively simple. To begin with, the signal from the local oscillator (LO) is passed through a series of passive components and then split into two signals of different frequencies. The first signal is then amplified using a low noise amplifier (LNA). The second signal is then passed through an attenuator before being mixed with the signal from the LNA using a diplexer. The diplexer then reduces the amplitude and phase of both the signals, resulting in an output signal which is a combination of both signals.

The HMC-MDB171 thus offers high linearity, high isolation, and excellent performance over a wide frequency range. This makes it a versatile and reliable solution for military, space, and wireless communication applications. The working principle is also quite straightforward, making it easy to use and operate. Thus, the HMC-MDB171 is a great choice for applications that require high performance and versatility.

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