Balancing network for microwave power combiner
AssigneeThe Bendix Corporation
InventorCarl P. Tresselt
Life of this patent
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Abstract
The diode bias input terminals of an IMPATT microwave power combiner are resistively coupled to a common floating node to provide stabilization of the operating points of the individual IMPATT diodes, thus minimizing the tendency of the diodes to contribute unequally to total RF output, particularly in a varying temperature environment. The optional inclusion of RF lossy bypass capacitors to ground several points of the common node suppresses bias circuit oscillations.
Claims9
A microwave power combiner for combining the power output from a plurality of active electronic elements which individually generate RF power in response to individually impressed bias applied at bias points, a typical said bias point being associated with a typical said active electronic element and communicating electrically with one electrode of its associated active electronic element, the other electrode of said associated active electronic element being connected in common with the other electrode of the other active electronic elements to a bias return terminal, an improvement comprising:
- a floating node;
- a plurality of essentially identical resistors, a typical said resistor being associated with a typical said active electronic element connecting the bias point of said associated active electronic element to said floating node;
- and,
- means capacitively coupling said floating node to said bias return terminal.
Dependencies are inferred from the claim text.