Group delay equalizer integrated with a wideband distributed amplifier monolithic microwave integrated circuit
AssigneeNanowave, Inc.
InventorsKazuya Ozawa, Saphan Yok, Stephen R. Nelson
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Abstract
A wideband distributed or feedback amplifier monolithic microwave integrated circuit (MMIC) is disclosed that contains an integrated group delay equalizer circuit to compensate for the group delay variation of the amplifier circuitry. The MMIC amplifier is capable of achieving a predicted constant group delay with little variation over a wide frequency range. In addition, the group delay equalizer circuit enables the amplifier to achieve flat (constant) gain over a wide bandwidth, while maintaining constant group delay. Furthermore, the group delay equalizer circuitry requires only a small portion of the total MMIC area.
Claims28
A monolithic microwave integrated circuit, comprising:
- an amplifier circuit having a group delay variation verses frequency characteristic;
- and
- a group delay equalizer circuit integrated with said amplifier circuit to compensate for said group delay variation verses frequency characteristic of said amplifier circuit.
A method for providing a near constant group delay over a frequency range of a amplifier circuit, comprising the steps of:
- providing said amplifier circuit within a monolithic microwave integrated circuit, said amplifier circuit having a group delay response variation verses frequency characteristic;
- and
- integrating a group delay equalizer circuit with said amplifier circuit on said monolithic microwave integrated circuit to compensate for said group delay variation verses frequency characteristic of said amplifier circuit.
Dependencies are inferred from the claim text.