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RF Evaluation and Development Kits, Boards

The LMH2832EVM-50 Evaluation Module is an RF evaluation and development kit, board, providing numerous features for any application that requires high performance, high reliability RF transceiving. The module is a transceiver consisting of a transmitter and a receiver. The main advantage of the LMH2832EVM-50 is its ability to transmit and receive multiple channels simultaneously. This makes it ideal for applications where several channels are required simultaneously, such as a multi-user environment.

Overview of the LMH2832EVM-50

The LMH2832EVM-50 is an RF evaluation platform, a development kit with the flexibility and features needed for sophisticated applications. The board houses a full-featured RF transceiver which can operate at up to 40 channels simultaneously. The board also includes a microcontroller, low noise amplifier (LNA) and RF power amplifier (PA) for driving direct digital synthesizer (DDS) signals up to six watts. The SMT2 Technology transceiver is integral to the board, providing up to 10 watts of power at frequencies up to 6GHz and a single-ended output power of up to 50W.

The transceiver includes a transmit/receive splitter, antenna filter, gain stages, and switchable bypass mode. It supports fractional-N fractional-N phase-locked loop (PLL) digital signals, which allows users to generate and receive signals within any frequency band without interfering with other channels. The board also features an on-chip temperature sensor, flash memory, and voltage controlled oscillator (VCO). It is compatible with a variety of development tools, including software development kits, programmer tools, debuggers, and logic analyzers.

Working Principle of LMH2832EVM-50

The LMH2832EVM-50 operates in the 900 MHz - 6.0 GHz frequency range. It features a fractional-N PLL architecture, which allows users to generate and receive signals within any frequency band without interfering with other channels. The module consists of an RF part and a microcontroller part that controls its operations. The transceiver is programmable using software modeled on National Instruments Labview, Minds@Work Visual RF, or NI LabWindows/CVI.

The board also features a low noise amplifier (LNA), a radio frequency power amplifier (PA), and a direct digital synthesizer (DDS) that provides a high frequency accuracy of more than 0.01%. The DDS is used to produce high-quality signals without the need of a dedicated oscillator or filter stages. The transceiver also features a digitally controlled attenuator and a switchable bypass mode for connecting with other components. The board also has an on-chip temperature sensor, flash memory, and voltage controlled oscillator (VCO).

The basic operation of the transceiver is depicted in the following block diagram, where an input signal is exposed to the low noise amplifier (LNA) of the transceiver. The amplified signal is then fed into a mixer, along with a signal from the digitally controlled PLL. The mixer combines the two signals to produce the carrier frequency signal. This carrier signal is then amplified by the power amplifier (PA) and sent out to the antenna through a duty-cycle adjuster.

On the receiver side, the antenna receives the signal and sends it to the low-noise amplifier (LNA). The amplified signal is then mixed with a local oscillator (LO) and a signal from the digitally controlled PLL. The mixer combines the two signals to produce the received signal. The received signal is then sent through multiple filtering stages and into the DDS for digital signal processing.

Conclusion

The LMH2832EVM-50 is a full-featured RF evaluation and development kit, board, providing numerous features for high-performance, high-reliability RF transceiving. It is capable of transmitting and receiving up to 40 channels simultaneously, and features a fractional-N fractional-N phase-locked loop (PLL) digital signal generator, low-noise amplifier (LNA) and power amplifier (PA) for driving direct digital synthesizer (DDS) signals up to six watts, as well as a number of other debugging and programming tools. The LMH2832EVM-50 is a great tool for designing and developing multi-channel radio solutions.

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