HMC272AMS8ETR RF/IF and RFID

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
RF Type:	General Purpose
Frequency:	1.7GHz ~ 3GHz
Number of Mixers:	1
Gain:	--
Noise Figure:	9dB
Secondary Attributes:	Up/Down Converter
Current - Supply:	--
Voltage - Supply:	--
Package / Case:	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Supplier Device Package:	8-MSOP
Base Part Number:	HMC272

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RF Mixers

RF mixers are electronic components which take two input signals and create a variety of output signals based on the frequency of their inputs. They are commonly used in radio frequency (RF) transmitters, receivers, and transceivers because they can convert a signal from one frequency to another. The HMC272AMS8ETR is a voltage controlled RF mixer that operates from a minimum of 8GHz up to an impressive 24GHz.

Application Field

The HMC272AMS8ETR is designed for use in high-speed communication systems where frequency up conversion is required, such as in satellite and military applications. It can be used for frequency conversion in a wireless backhaul system, or to enable dual-band operation in a WLAN, WiMax, or IEEE 802.16 compliant product. The mixer\'s low insertion loss and high conversion gain make it ideal for a variety of system applications.

Working Principle

The HMC272AMS8ETR is a passive mixer with a 3 dB conversion loss and a low noise figure of 2.8 dB at 8 GHz. It works based on the "quadrupole method" and consists of two double-balanced circuits which are connected to an input and an output port. The device is driven by an external voltage control, which can be used to adjust the gain and phase of the mixer. The output of the circuit is derived from the quadrature sum of two RF ports. The double-balanced circuits inside the HMC272AMS8ETR are had two "transports." The first transport is a differential structured pair of transistors, which are connected externally to the input and to the voltage control input, as well as internally to the output. The second transport is another differential transistor pair, connected internally to the input and to the voltage control. The two transports amplify the input signal, and the combined output is taken from the synthesizer output. This output is then combined with the quadrature signal taken from the input port, producing the desired frequency conversion.

Conclusion

The HMC272AMS8ETR is a high-performance voltage-controlled RF mixer. Its wide frequency range, low insertion loss, low noise figure, and high gain make it the ideal choice for high-speed communication systems. Its double-balance circuit structure enables the generation of an output signal with a quadrature sum of two RF ports. The HMC272AMS8ETR is an invaluable device for any system using frequency up conversion.

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