Patent ID: 6028489
Filing Date: 2000-02-22
Classification: H05K,Y10T

Abstract:
A modular high-frequency oscillator structure having a master circuit board for forming a plurality of oscillator units, said master circuit board comprising:an upper copper foil layer having a plurality of component circuit patterns and a plurality of positive voltage, ground and signal regulation circuit patterns, wherein each component circuit pattern provides circuit connections for one oscillator unit, said plurality of positive voltage and ground circuit patterns being provided for supplying external power to each oscillator unit, said plurality of signal regulation circuit patterns being provided for applying regulation signals to each oscillator unit;a middle copper foil layer having a plurality of power transfer and ground transfer circuit patterns for electrically connecting said plurality of positive voltage and ground circuit patterns to said plurality of oscillator units;a first isolation layer provided between said upper and middle copper foil layers;a lower copper foil layer having a large common ground circuit pattern electrically connected to the plurality of ground circuit patterns of said upper copper foil layer and the plurality of ground transfer circuit patterns of said middle copper foil layer; anda second isolation layer provided between said middle and lower copper foil layers, wherein said master circuit board is etched in such a manner that said upper and lower copper foil layers are cut through to isolate each oscillator unit and said middle copper foil layer remains uncut whereby each oscillator can be tested directly on said master circuit board.