Ultra-wideband power amplifier module apparatus and method for optical and electronic communications

A broadband power amplifier module, comprising:

• a cavity with at least an input terminal, an output terminal, a detected output terminal;
• a plurality of amplifiers disposed within said cavity, said plurality of amplifiers being connected in series from said input terminal to said output terminal;
• at least one conical inductor disposed within said cavity, connected to a node formed between an amplifier output node of said amplifiers and a first supply voltage source, said conical inductor having a generally constant impedance over a predetermined bandwidth;
• a first plurality of parallel plate-type capacitors disposed within said cavity, connected to a node formed between said amplifier output node and said output terminal, said first plurality of capacitors having a predetermined self-resonant frequency that is higher than said predetermined bandwidth;
• a power detector circuit disposed within said cavity and connected to an output node formed between said first plurality of capacitors and said output terminal, said power detector circuit comprising:
• a resistor divider connected between said output node and a second supply voltage source, said divider adapted to generate a detector input voltage that is of a predetermined fraction of a signal at said output node;
• a detection diode adapted to detect voltage levels of said detector input voltage to generate a detector output voltage;
• a second plurality of capacitors coupled to said detector diode, each of said second plurality of capacitors being adapted to low-pass filter and suppress RF signal in said detector output voltage over a predetermined frequency bandwidth;
• a ¼-wave radial stub also coupled to said detector diode, said radial stub being adapted to filter RF signal in said detector output voltage over a range near the high end of the frequency band.

A modulator driver module for OC-192 or OC-768 communications, comprising:

• at least one cavity with at least one input terminal and one output terminal;
• a plurality of amplifiers disposed within said cavity, said plurality of amplifiers being connected in series from said input terminal to said output terminal;
• at least one conical inductor disposed within said cavity and connected to an amplifier output node of said plurality of amplifiers, said conical inductor being adapted to provide a predetermined high impedance over a predetermined bandwidth;
• a first plurality of capacitors disposed within said cavity and connected between said amplifier output node and said output terminal, said plurality of capacitors being adapted to provide DC blocking for said output terminal.

A broadband power amplifier module for high bit-rate SONET/SDH transmission channels, comprising:

• at least one cavity;
• broadband amplifier means disposed within said cavity for amplifying an input signal from an input stage and generating an output to an output state;
• conical inductor means disposed within said cavity and coupled to output stage of said amplifier means for providing high impedance over a predetermined bandwidth;
• first capacitor means disposed within said cavity and coupled to said output stage of said amplifier means for providing DC blocking.