Distributed bias circuit for wideband amplifiers
AssigneeQorvo US, Inc.
InventorCharles Forrest Campbell
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Abstract
Embedded blocking capacitor structures for wideband amplifier circuits are disclosed. A wideband amplifier circuit includes transistors that output radio frequency (RF) signals. An embedded blocking capacitor structure is operably connected between the terminals of the transistors and an RF output. The embedded blocking capacitor structure distributes a bias voltage to the terminals of the transistors and blocks the bias voltage from passing to the RF output. The embedded blocking capacitor structure also propagates an RF signal to an RF output.
Claims20
An amplifier system, comprising:
- wideband amplifier circuitry comprising a plurality of transistors in an output stage of an amplifier circuit;
- and
- signal lines operably connected to terminals of the transistors, wherein the signal lines are used in an embedded blocking capacitor structure that operably connects the terminals of the transistors to a radio frequency (RF) output, the embedded blocking capacitor structure comprising at least one metal-insulator-metal capacitor.
A wideband amplifier integrated circuit, comprising:
- amplifier circuitry comprising a transistor;
- and
- an embedded blocking capacitor structure operably connecting a terminal of the transistor to a radio frequency (RF) output, the embedded blocking capacitor structure comprising at least one blocking capacitor with a top conductive plate and a bottom conductive plate of the at least one blocking capacitor configured as signal lines.
Dependencies are inferred from the claim text.