Consider the receiver system as shown in the following figure. a. Calculate the gain of the...

 

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Consider the receiver system as shown in the following figure. a. Calculate the gain of the LNA amplifier circuit to ensure that the system's NF is less than 4dB. b. The signal received from the antenna has a capacity of -90dBm with a bandwidth of 100MHz and the gain of the LNA circuit is 20dB. Suppose the NF of the whole system is 5dB. Calculate the voltage of the received signal and the voltage of the signal at the input of the ADC if it is known that the input impedance of the ADC is 100 ohm. c. What parameters of the elements (G,NF) in the system do we need to adjust to improve SNR? Attenuation 2dB NF = 1dB Ques (a) LNA G=0 NF = 6 dB NF = 3 dB G = 40 A NF = 40 dB ADC Consider the receiver system as shown in the following figure. a. Calculate the gain of the LNA amplifier circuit to ensure that the system's NF is less than 4dB. b. The signal received from the antenna has a capacity of -90dBm with a bandwidth of 100MHz and the gain of the LNA circuit is 20dB. Suppose the NF of the whole system is 5dB. Calculate the voltage of the received signal and the voltage of the signal at the input of the ADC if it is known that the input impedance of the ADC is 100 ohm. c. What parameters of the elements (G,NF) in the system do we need to adjust to improve SNR? Attenuation 2dB NF = 1dB Ques (a) LNA G=0 NF = 6 dB NF = 3 dB G = 40 A NF = 40 dB ADC Consider the receiver system as shown in the following figure. a. Calculate the gain of the LNA amplifier circuit to ensure that the system's NF is less than 4dB. b. The signal received from the antenna has a capacity of -90dBm with a bandwidth of 100MHz and the gain of the LNA circuit is 20dB. Suppose the NF of the whole system is 5dB. Calculate the voltage of the received signal and the voltage of the signal at the input of the ADC if it is known that the input impedance of the ADC is 100 ohm. c. What parameters of the elements (G,NF) in the system do we need to adjust to improve SNR? Attenuation 2dB NF = 1dB Ques (a) LNA G=0 NF = 6 dB NF = 3 dB G = 40 A NF = 40 dB ADC

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a To calculate the minimum required gain of the LNA to ensure the system NF is less than ... View the full answer