In the previous module we found out that in order to find the transmission line impedance and the fields in the transmission line, we…
Month: March 2018
Depletion MOSFET
A depletion MOSFET is a one state transistor, that is in an ON state even when the gate to source voltage VGS or VGSS…
Challenging students to design solutions that improve everyday life
Texas Instruments has issued a coding challenge for students: develop a solution using TI education technology that helps improve daily lives. Maybe an alarm…
Aerospace STEM summer camp launched for UK students
Northrop Grumman has launched its Summer Time Advanced Aerospace Residency (STAAR) programme, a summer camp open to students across the UK, aged 14-15 years,…
Circular transmission lines
A circular waveguide is schematically depicted in Figure 5. To consider its parameters we will employ the polar coordinates with radial components ρ and…
Coaxial transmission line
A schematic coaxial transmission line is depicted in Figure 6 and are widely used both commercially and industrially, especially in connectors. To obtain the…
The transmission line of parallel planes, stripes and microstripes
The example of parallel planes or stripes is the most general example of transmission line. Schematically it is depicted in Figure 7. The parallel…
Equivalent currents and voltages in network analysis
RF and microwave circuits that operate on small frequencies can be treated like circuits with lumped parameter components. If the components are small enough,…
L-section impedance matching
The matching impedance process for RF circuits is very important. Impedance matching is also called the tuning process. Physically it represents the circuit between…
Single-stub and double-stub matching
Stub tuning is an impedance matching technique, when an open-circuited or short-circuited transmission line is connected to the main transmission line. A stub is…