noise figure

noise figure

Antennas : Horn

• A Horn Antenna for 2.4 GHz. - This Antenna is not really practical for AO-40 reception, but horn antennas have a number of qualities useful in microwave antenna testing and noise figure measurements.
  [ Hits: 10958 | Votes: 32 | Rating: 3.82 ]
• Noise Figure Measurement using Standard Antennas - Measuring noise fiugre on the W2IMU horn and the dual-dipole-feed
  [ Hits: 354 | Votes: 2 | Rating: 2 ]

• G/T Simulations - by VE7BQH - Here you will find information on how antennas behave when stacked G/T is an important figure-of-merit for the antenna's overall receive performance, because it balances forward gain (G) against received thermal noise (T).
  [ Hits: 849 | Votes: 8 | Rating: 7.87 ]

• NFM - noise figure measurement - NFM (for Noise Figure Meter) is a software application to assist Noise Figure measurement. NFM implements the method of Agilent application notes AN 57-1 and AN 57-2 for noise figure measurement, but with the addition of an adjustable attenuator after the noise source and between the DUT and instrument.
  [ Hits: 404 | Votes: 4 | Rating: 7.75 ]

• Noise Meter - Noise Meter software for the noise meter tool by G8KBB that measure noise using a PC sound card and calculate noise figures by means of a calibrated noise source.
  [ Hits: 759 | Votes: 1 | Rating: 4 ]

• Friis-It NF for iPhone - Friis-It NF is the first iPhone OS based application that allows you to calculate noise figure, system sensitivity, and cascaded gain for an RF Receiver system
  [ Hits: 631 | Votes: 1 | Rating: 10 ]

• 144 MHz preamplifier with BF981 - Design of a preamplifier for 144 MHz with 1 dB NF and 23 dB gain using BF981. This amplifier is using a low cost silicon MOSFET (BF981 from Philips) to give more than 20 dB gain with around 1 dB noise figure on 2 meter.
  [ Hits: 17963 | Votes: 28 | Rating: 5.82 ]
• 23 cm GaAs FET preamplifier - On 23cm the best way to obtain a good RX-sensitivity is to use a GaAs-FET in the front-end, since these devices show very low noise figures.
  [ Hits: 4050 | Votes: 6 | Rating: 4.67 ]
• 435 plus 1296MHz ATF54143 Pre-amplifier - The prototype for this amplifier was originally designed for 70cm and was used on the 2004 3B9C Dx-pedition to Rodriguez Island for satellite and EME. It had a noise figure of 0.49dB with an associated gain of 20dB.
  [ Hits: 336 | Votes: 0 | Rating: 0 ]

• Signal to Noise Ratio SNR - Signal to Noise Ratio, definition and application to Radio Communications. Signal to Noise Ratio (SNR) is a figure of merit that compares the level of a desired signal to the level of background noise.
  [ Hits: 133 | Votes: 5 | Rating: 8.4 ]