Miniature 180 degree power splitter

A power splitter comprising:

• a) a multi-layered low temperature co-fired ceramic substrate, the substrate having a top surface, a bottom surface and a plurality of inner layers;
• b) a first set of terminals located on the top surface and a second set of terminals located on the bottom surface;
• c) a resistor formed on the top surface and connected between two of the terminals an overglaze covering the resistor;
• d) a first ground plane formed on one of the inner layers;
• e) a second ground plane formed on another inner layer;
• f) a first and second capacitor electrode located on another inner layer, the capacitor electrodes forming a first and second capacitor;
• g) a plurality of vias extending through the layers between the first and second set of terminals, the vias providing an electrical connection between the terminals, the resistor, the capacitors and the ground planes;
• and
• h) a transformer attached to the top surface over the overglaze, the transformer having a center leg, a first and second wire wound on the center leg, the first wire having a first end, a second end and a midpoint, the second wire having a third and fourth end, the first end connected to an input terminal, the third end connected to the first capacitor and a first output terminal, the fourth end connected to a second output terminal, the midpoint connected to a parallel combination of the resistor and the second capacitor, the parallel combination of the resistor and second capacitor further connected to ground.

A power splitter for splitting an input signal into two output signals comprising:

• a) a transformer having a binocular core with a center leg, a first and second wire wound on the center leg forming a first and second winding;
• b) the first wire having a first end and a second end, the first end connected to a ground terminal and the second end connected to an input terminal;
• c) the second wire having a third and fourth end and a mid-point, the third end connected to a first output terminal and the fourth end connected to a second output terminal;
• d) a resistor;
• and
• e) a first capacitor connected in parallel with the resistor, the parallel combination of the capacitor and resistor having one end connected to the mid-point and the other end connected to the ground terminal.