Switching circuit for millimeter waveband control circuit

A switching circuit for a millimeter waveband control circuit, comprising:

• a switching cell disposed on a signal port path to match a frequency, the switching cell including an input/output transmission line, two transistors coupled vertically to both ends of the input/output transmission line, and a plurality of ground via holes disposed symmetrically in an upper portion and a lower portion of the input/output transmission line;
• a capacitor for stabilizing a bias of the switching cell;
• and
• a bias pad coupled in parallel to the capacitor to control the switching cell;
• wherein each transistor, through an impedance matching of the input/output transmission line, matches an input port to an output port, and sequentially transfers input signals to a plurality of the ground via holes to prevent the input signals from being transmitted into the output port when the transistor is in an ON state.

A switching circuit for a millimeter waveband control circuit, comprising:

• a switching cell disposed on a signal port path to match a frequency, the switching cell including an input/output transmission line, two transistors coupled vertically to both ends of the input/output transmission line, and a plurality of ground via holes disposed symmetrically in an upper portion and a lower portion of the input/output transmission line;
• a capacitor for stabilizing a bias of the switching cell;
• and
• a bias pad coupled in parallel to the capacitor to control the switching cell;
• wherein the switching cell comprises:
• a gate-coupling metal for coupling a gate electrode of the transistor;
• a first air-bridge metal for coupling a drain electrode of the transistor to the input/output transmission lines;
• and
• a second air-bridge metal for coupling the source electrode of the transistor to the input/output transmission lines.