如果我们实际量到一个Low Noise Amplifier 增益为28dB,噪声指数为2dB,我们可以有两个系统模型Model 1就是一般课本常见模型,Model 2是我们用一个理想的放大器与一个衰减器来组成,两个都会得到一样的结果 Gain = 28dB,NF = 2dB,两个在系统上是分不出差异。 验证这个模型我们用了以下两个Case来验证,分别在LNA...
The article presents a simple spreadsheet for financial calculations of a return of investment (ROI) of learning and development (L&D) interventions. It provides definition for the several blue boxes in the ROI spreadsheet which is categorized into general information, salaries and costs, residential...
Determine the gain in dB for a filter that has an output power of 4.9 W and an input power of 3.6 mW. Find the power loss P_loss that would occur in the transmission line if a 1.55-ohm line is used to transmit 135 MW of power. ...
So a "power amplifier" which needs an input of 1.5 V from a 1000 ohms source to give an output of 30 V into 8 ohms is spoken of as having a gain of 20 × log (30/1.5) = 20 × log (20) = 20 × 1.3 = 26 dB. So "dB" is simply another way to write "ratio of"....
Transmitter Power in dBm Transmitter Antenna Gain in dBi Transmitter Cable Loss in dB Distance in miles or kilometers Receiver Sensitivity in dBm Receiver Antenna Gain in dBi Receiver Cable Loss in dB Gain Margin in dB The Free Space Loss and Received Signal values are also calculated....
Gain Margin in dB The Free Space Loss and Received Signal values are also calculated. The EIRP/ERP Calculator computes the EIRP (Effective Isotropic Radiated Power) and ERP (Effective Radiated Power) in both watts and dBm from the transmitter power and antenna gain. The field strength in dBuV...
Table 1. DS1802 Gain (dB) as a Function of Wiper Setting - Resistance Characteristics This chart only gives the output as a function of dB attenuation with reference to 0dB attenuation at the wiper 0 position. If the ratiometric output is desired, the ratio of the output signal relative to...
i using vb.net and the database i use is LocalDB v11 and framwork 4.0 i have some problem here can someone teach me how to use button to calculate the total amount of the Row Or Column in the Datagridview i have no ideal at all can someone show me how e.g Tax Amount Item Cos...
This analysis has also helped to complement existing research (Nurse et al., 2020) and to gain specific insights into what data must be collected by organisations and (cyber) insurance companies in order to progress the practice of risk management and predict the residual risk that organisations ...
So the input impedance changes with the gain - this is how the input impedance is calculated. The PGA2505 did not provide the information in the datasheet. Unlike traditional high-impedance op-amp inputs, the PGA2505 has a relatively low input impedance (~2 kΩ at 0 d...