HMC258

Series:	--
Packaging:	Bulk
Part Status:	Obsolete
RF Type:	VSAT
Frequency:	14GHz ~ 21GHz
Number of Mixers:	1
Gain:	--
Noise Figure:	10dB
Secondary Attributes:	--
Current - Supply:	--
Voltage - Supply:	--
Package / Case:	Die
Supplier Device Package:	Die
Base Part Number:	HMC258

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RF Mixers

An RF mixer, or frequency mixer, is a nonlinear device used to change the frequency of a signal. RF mixers perform a linear combination of two signals, usually at different frequencies. They are used in communication systems to convert a signal from one frequency to another. The most widely used RF mixer is the HMC258, which is a bi-directional active mixer with an integrated one-bias forward- and reverse-gain amplifier.The HMC258 is a high-performance, low-noise RF mixer that can operate at frequencies ranging from DC to 8 GHz. It features an integrated high gain, low noise amplifier circuit and a large active range that allows for the conversion of small signals to frequencies as high as 8 GHz. The HMC258 is suitable for a wide variety of applications, including frequency up-conversion, down-conversion, signal regeneration, and signal multiplexing.The HMC258 mixer is based on a double-balanced architecture that produces low-distortion, low-noise conversion with a wide input dynamic range. Its active stream architecture offers improved linearity and signal-to-noise performance over traditional ring double-balanced mixer topologies. The HMC258’s active amplifier circuit enables operation without the need for external resistive or capacitive components. Additionally, its active-bias configuration provides improved power-efficiency and improved linearity performance compared to passive-bias configurations.In terms of application fields, the HMC258 can be used in a range of applications, from cell phones to table-top radios and clock radios. As a down-converter, it is especially useful for low-power mobile device applications, such as cellular phones, video game consoles, and factory automation. It is also useful for up- and down-converting audio and video signals, as well as for signal regeneration and signal multiplexing.The HMC258 is also an attractive choice when it comes to both direct and indirect conversion. Direct conversion is used to convert a signal at a fixed frequency without requiring any amplification or filtering. However, indirect conversion is necessary for non-fixed frequencies and involves frequency translation before the final frequency conversion can take place. The HMC258 is capable of both direct and indirect conversion, allowing it to be used in a wide variety of applications.The HMC258 is designed to provide excellent linearity and low-noise performance over a wide range of frequencies and temperature ranges. It is designed to support low-power operational modes, which are ideal for RF activity that requires only a small amount of power. Its active-bias architecture also allows it to operate at a lower voltage than conventional passive-bias mixers, resulting in improved power efficiency.The working principle of the HMC258 mixer is based on the principle of frequency up-conversion and down-conversion. It converts a signal from one frequency to another by combining two inputs, usually at different frequencies. The conversion process is done by modulating the amplitude of one input with the other input, resulting in a new output signal at a third frequency. The conversion ratio between the two input signals is determined by the ratio of their frequencies. The HMC258 is designed to provide low-distortion, low-noise conversion with a wide input dynamic range.In conclusion, the HMC258 is a high-performance, low-noise RF mixer that is suitable for a number of applications, ranging from cellular phones to table-top radios and clock radios. Its active stream architecture provides improved linearity and signal-to-noise performance, and its active-bias configuration provides improved power-efficiency. Its working principle is based on the principle of frequency up-conversion and down-conversion, which produces low-distortion, low-noise conversion with a wide input dynamic range.

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