Return loss s11

- The input impedance and
**S11**(**return loss**) are both related to the transmission line reflection coefficient. Real S-parameters are complex functions of frequency and can have a complicated set of resonances/antiresonances; an example for a transmission line connected to a 1 pF load capacitance terminated to 50 Ohms is shown below. **S11**= V r1 / V i1, S12 = V t1 / V i2, S21 = V t2 / V i1, S22 = V r2 / V i2 Matching impedance of the antenna to 50 Ω so that it will be equal to the source impedance to get a decent input**return****loss**(**S11**) is the goal of my project. The relationship of Input**Return****Loss**(**S11**) and Voltage Standing Wave Ratio (VSWR) table is also mentioned in ...- Budget: £10,000 Purchase Price: £7,000 Final Cost: £8,632* Selling Price: £12,300 Profit/
**Loss**: +£3,668 Work Completed: Accelerator pedal position sensor replaced, Throttle body refurbished; carbon track replaced with a magnet-based contact system. Air conditioning serviced, new heat exchanger and dryer fitted. Track rod ends replaced. - Reflection
**S11**, S22:**Return****loss**, Impedance, Admittance, VSWR. Transmission S12, S21: Gain/**Loss**(IL - Insertion**Loss**), Phase and Group Delay. N port S-matrix. If the number of ports in a network increases, the s-parameter will become complex according to the number of ports. Two port network has four parameters, three port will have nine ... - S11 =
**reflection coefficient (related to return loss in dB at port 1)**S22 =**reflection coefficient**(related to return loss in dB at port 2) For perfectly matched and ideal n/w: → S11 = S22 = 0-→ S12 = minimum –→ S21 = depends on the nature of the circuit (≥0)