Sorry, where do you see that?Swamp Thing said:
Why in the world would you try to use an RF amp under mismatched conditions?Swamp Thing said:
P1dB -- one dB compression point. The power level at which the gain drops by 1 dB due to saturation -- an indicator of the max power output it would deliver.berkeman said:
Could well happen when I connect an experimental receiving antenna to the input. Or an experimental mixer or something.berkeman said:
Kenwood makes an unrelated product called XR-601-1 which dominates the search results. If I search with "-kenwood", still no luck.Baluncore said:
The most common chip used in widely available generic LNAs is often the Mini-Circuits PSA4-5043+. This chip is favored for its broad frequency range, low noise figure, and high linearity, making it suitable for a variety of RF applications.
Yes, alternative chips include the Avago MGA-82563 and the Skyworks SKY67151-396LF. These alternatives also offer good performance in terms of noise figure and gain, and are used based on specific application requirements or cost considerations.
Key specifications include the noise figure (NF), gain, input and output return loss, linearity (measured as OIP3 - Output Third-Order Intercept Point), and the operating frequency range. These parameters determine the overall performance of the LNA in various signal environments.
Yes, chips like the Mini-Circuits PSA4-5043+ are versatile and can be used in both commercial and amateur radio applications. Their wide frequency range and robust performance make them suitable for diverse uses including satellite communications, cellular base stations, and amateur radio setups.
Choosing the right LNA chip involves considering your application's specific needs such as frequency range, required gain, acceptable noise figure, and power requirements. It is also important to consider the compatibility of the chip with other components in your circuit and whether the chip's impedance matches your system's requirements.