Itâs also essential for keeping your nerves, heart, and muscles functioning properly. Since calcium is so important for many of your bodyâs functions, its levels need to be within a tight range. A second calcium blood test, called the ionized calcium blood test, measures the amount of âfreeâ calcium present in your blood. âFree calciumâ refers to calcium thatâs not bound to any proteins and not together with an anion in your blood.
The hybrid ring coupler, also called the rat-race coupler, is a four-port 3 dB directional coupler consisting of a 3Î»/2 ring of transmission line with four lines at the intervals shown in figure 12. Power input at port 1 splits and travels both ways round the ring.
Coplanar means on the same plane. For example, if a laser gun shot straight through the center of both circles, then unless they both have the same center, it wouldn't jus â¦ t pierce the two circles, but would slice them clean in half.oncentric circles have the same centre, therefore, if they were the same circles with the same radius, â¦ then they would all lie on top of each other and be effectively one circle.