Shield Generator Designs
I was thinking about how one might be designed, and here's my ideas on the subject. 
The Generator itself would have a cylindrical design. The outer casing would be a cylinder, but within would be an EM field generator, capable of adjusting the field size by manuevering the central conduit through a superconductive coil made of refined naquada. The EM field emitter would be shaped like a flattened dome. The area that the EM field can encompass is determined by the placement of the induction coil attached to the central conduit, within the Outer coil. The further inward the induction coil is, the smaller the field size. The further outward it is, the larger the area the EM field can cover. However, producing a larger field size uses more power and thus weakens the shield. On the other hand it might be an option that is desirable depending upon your goal.
The EM field generator is only the first part of the Shield generator. Alone it is effective against reducing the effects of radiation, but it would be useless against weapons. For that, you must also use Cold Null-Plasma in conjunction with it. Each EM Generator has 3 tanks of Cold Null-Plasma, that is then directed through nozels over the EM field emitter. The Cold Null Plasma is a specially refined form of Plasma that as a neutral charge, but becomes Ionized when an energy weapon strikes it. The Ionized plasma glows from the energy it absorbs, and if the plasma absorbs too much energy it causes the protective shell of the shield to become weakened. The plasma must be replaced with fresh Cold Null Plasma, which means that the shields have to be dropped. Once the ship has dropped the shields, it must raise the EM field again, and begin 'recharging' the shield by releasing more Cold Null Plasma from the storage tanks. The shield will not be at full strength until the plasma has once again completely formed itself along the EM field.
A single ship would have multiple Shield Generators depending on it size. The multiple shields would work in unison, creating the illusion that there is only one shield protecting the ship. In fact, the EM fields over lap one another, and the plasma form along the outer edges of all the EM fields, making it appear that there is only a single shell around the ship. The Shield Generator locations can be determined by both outer design, and a plasma trail winding its way up from the emitter to the outer shell of the field. The trail can be seen because the EM strength is strongest at the emitter causing the plasma to glow slightly. If the plasma is not Ionized it isn't visible, unless something is affecting it such as radiation or some other energy source.
The shield can also protect the ship from solid projectiles also, because the plasma formed along the outer edge of the EM field forms a thin solid 'shell'. Depending on the strength of the EM field, it may be able to completely stop the object, but even if it can't, it will slow the object down, reducing whatever damage it might cause.
The Shield can use multiple types of energy sources, but whatever is used it must be sufficient to power the shield or, they would be useless. Energy and/or Kinetic attacks on a ship with shields cannot destroy the EM field (unless they hit one of the shield generators directly), but if they can Ionize the plasma in the shield enough, it can be rendered useless, and leave the ship unprotected. In the middle of a combat, losing shields can be deadly, and it takes time to recharge the shields, if you are forced to do so. For this reason, it is wise for a ship to also be armored, so that in between shield rechargings the ship still has some protection.
That is my idea for how a shield generator might be designed. Anyone else have any other ideas, comments, or questions? Maybe I've forgotten something, or maybe there is something that could be added that would make it better. Whatever the case, lets hear it..!
The Generator itself would have a cylindrical design. The outer casing would be a cylinder, but within would be an EM field generator, capable of adjusting the field size by manuevering the central conduit through a superconductive coil made of refined naquada. The EM field emitter would be shaped like a flattened dome. The area that the EM field can encompass is determined by the placement of the induction coil attached to the central conduit, within the Outer coil. The further inward the induction coil is, the smaller the field size. The further outward it is, the larger the area the EM field can cover. However, producing a larger field size uses more power and thus weakens the shield. On the other hand it might be an option that is desirable depending upon your goal.
The EM field generator is only the first part of the Shield generator. Alone it is effective against reducing the effects of radiation, but it would be useless against weapons. For that, you must also use Cold Null-Plasma in conjunction with it. Each EM Generator has 3 tanks of Cold Null-Plasma, that is then directed through nozels over the EM field emitter. The Cold Null Plasma is a specially refined form of Plasma that as a neutral charge, but becomes Ionized when an energy weapon strikes it. The Ionized plasma glows from the energy it absorbs, and if the plasma absorbs too much energy it causes the protective shell of the shield to become weakened. The plasma must be replaced with fresh Cold Null Plasma, which means that the shields have to be dropped. Once the ship has dropped the shields, it must raise the EM field again, and begin 'recharging' the shield by releasing more Cold Null Plasma from the storage tanks. The shield will not be at full strength until the plasma has once again completely formed itself along the EM field.
A single ship would have multiple Shield Generators depending on it size. The multiple shields would work in unison, creating the illusion that there is only one shield protecting the ship. In fact, the EM fields over lap one another, and the plasma form along the outer edges of all the EM fields, making it appear that there is only a single shell around the ship. The Shield Generator locations can be determined by both outer design, and a plasma trail winding its way up from the emitter to the outer shell of the field. The trail can be seen because the EM strength is strongest at the emitter causing the plasma to glow slightly. If the plasma is not Ionized it isn't visible, unless something is affecting it such as radiation or some other energy source.
The shield can also protect the ship from solid projectiles also, because the plasma formed along the outer edge of the EM field forms a thin solid 'shell'. Depending on the strength of the EM field, it may be able to completely stop the object, but even if it can't, it will slow the object down, reducing whatever damage it might cause.
The Shield can use multiple types of energy sources, but whatever is used it must be sufficient to power the shield or, they would be useless. Energy and/or Kinetic attacks on a ship with shields cannot destroy the EM field (unless they hit one of the shield generators directly), but if they can Ionize the plasma in the shield enough, it can be rendered useless, and leave the ship unprotected. In the middle of a combat, losing shields can be deadly, and it takes time to recharge the shields, if you are forced to do so. For this reason, it is wise for a ship to also be armored, so that in between shield rechargings the ship still has some protection.
That is my idea for how a shield generator might be designed. Anyone else have any other ideas, comments, or questions? Maybe I've forgotten something, or maybe there is something that could be added that would make it better. Whatever the case, lets hear it..!
It's just fun to speculate on advanced technology we see on screen, on how it works and how to make it come true. Like Star Trek.
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