Harmonic termination circuit for medium bandwidth microwave...

Details Harmonic termination circuit for medium bandwidth microwave... Harmonic termination circuit for medium bandwidth microwave...

2007-02-13

2007-02-13

Pascal, Robert (Department: 2817)

Wave transmission lines and networks

Plural channel systems

Having branched circuits

C333S127000, C330S302000

Reexamination Certificate

active

10998689

ABSTRACT:
A compact amplifier output bias circuit is used as a broadband harmonic termination. The bias circuit is adapted as a harmonic termination circuit to produce an effective low impedance at the signal harmonic frequencies while having the capability of supplying DC power to the amplifier stage, optionally, if needed. A pi network is coupled to an active device output through a predetermined length of transmission line tuned for optimum power added efficiency in the frequency band of operation and provides a low impedance at frequency bands above the frequency band of operation while allowing DC bias to be appliable to the active device output.

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