enow.com Web Search

  1. Ads

    related to: low noise amplifier circuit design

Search results

  1. Results from the WOW.Com Content Network
  2. Low-noise amplifier - Wikipedia

    en.wikipedia.org/wiki/Low-noise_amplifier

    A low-noise amplifier (LNA) is an electronic component that amplifies a very low-power signal without significantly degrading its signal-to-noise ratio (SNR). Any electronic amplifier will increase the power of both the signal and the noise present at its input, but the amplifier will also introduce some additional noise.

  3. RF front end - Wikipedia

    en.wikipedia.org/wiki/RF_front_end

    An RF amplifier, often called the low-noise amplifier (LNA). Its primary responsibility is to increase the sensitivity of the receiver by amplifying weak signals without contaminating them with noise, so that they can stay above the noise level in succeeding stages. It must have a very low noise figure (NF). The RF amplifier may not be needed ...

  4. Monolithic microwave integrated circuit - Wikipedia

    en.wikipedia.org/wiki/Monolithic_microwave...

    Monolithic microwave integrated circuit, or MMIC (sometimes pronounced "mimic"), is a type of integrated circuit (IC) device that operates at microwave frequencies (300 MHz to 300 GHz). These devices typically perform functions such as microwave mixing , power amplification, low-noise amplification , and high-frequency switching.

  5. Bias tee - Wikipedia

    en.wikipedia.org/wiki/Bias_tee

    It does this by using a capacitor on the RF output terminal, effectively creating an open circuit for the DC current. [11] The incoming RF signal, or the one from the antenna, is the output for the DC power. This front-end of a bias "T" typically consists of a bandpass filter, a low noise amplifier, and a mixer coupled to a local oscillator. [11]

  6. Cascode - Wikipedia

    en.wikipedia.org/wiki/Cascode

    Cascode circuits were employed in early television sets for the 'front-end' or tuner because of their low noise and wider bandwidth. Bipolar Junction Transistors have collector-base parasitic capacitance in the low picofarad to fractional picofarad range. The Miller Effect means that when this capacitance is in the feedback path, it results in ...

  7. Valve audio amplifier technical specification - Wikipedia

    en.wikipedia.org/wiki/Valve_audio_amplifier...

    Correspondingly, the voltage noise of a resistance R into an open circuit is and the current noise into a short circuit is /. The noise figure is defined as the ratio of the noise power at the output of the amplifier to the noise power that would be present at the output if the amplifier were noiseless (due to amplification of thermal noise of ...

  8. Low-noise block downconverter - Wikipedia

    en.wikipedia.org/wiki/Low-noise_block_downconverter

    The ideal LNB, effectively a perfect amplifier, would have a noise figure of 0 dB and would not add any noise to the signal. Every LNB introduces some noise but clever design techniques, expensive high-performance low-noise components such as HEMTs and even individual tweaking of the LNB after manufacture, can reduce some of the noise ...

  9. Valve RF amplifier - Wikipedia

    en.wikipedia.org/wiki/Valve_RF_amplifier

    Correspondingly, the voltage noise of a resistance R into an open circuit is ) / and the current noise into a short circuit is /) /. The noise figure is defined as the ratio of the noise power at the output of the amplifier relative to the noise power that would be present at the output if the amplifier were noiseless (due to amplification of ...

  1. Ads

    related to: low noise amplifier circuit design