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Dual band power amplifier circuit for microwave ablation

A power amplifier and dual-band technology, which is applied in the field of microwave ablation generators, can solve the problems of increasing the size of the microwave generator and the manufacturing cost of the microwave generator

Inactive Publication Date: 2017-04-19
TYCO HEALTHCARE GRP LP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This increases the size of the microwave generator as well as the manufacturing cost of the microwave generator

Method used

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  • Dual band power amplifier circuit for microwave ablation
  • Dual band power amplifier circuit for microwave ablation
  • Dual band power amplifier circuit for microwave ablation

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Embodiment Construction

[0026] The dual-band power amplifier circuit according to the present disclosure enables a dual-band microwave generator to achieve good performance at two different and independent frequencies simultaneously. In other words, a dual-band power amplifier circuit simultaneously matches impedance at two different and independent frequencies. A dual-band microwave generator includes a microwave source that generates signals having frequencies in the microwave range. A microwave source inherently has an impedance value, the source impedance. The energy delivery device is connected to the output port of the microwave generator to transmit the generated signal to the energy delivery device. The energy delivery device inherently also has an impedance value, the load impedance. Between the microwave source and the energy delivery device or between the source impedance and the load impedance, a dual-band power amplifier circuit is placed and amplifies the generated signal to an amplit...

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Abstract

A dual band power amplifier includes a power amplifier (420), a first matching circuit (450), a first auxiliary circuit (470), a second matching circuit (440), and a second auxiliary circuit (460). The power amplifier (420) has inputs and outputs, and is configured to amplify input signals at a first and second frequency. The first matching circuit (450) is electrically connected to the output of the power amplifier (420) and configured to match a load impedance to an output impedance at the first frequency. The first matching circuit (450) and the first auxiliary circuit (470) are configured to match the load impedance to the output impedance at the second frequency. The second matching circuit (440) is electrically connected to the input of the power amplifier (420) and configured to match a source impedance to an input impedance at the first frequency. The second matching circuit (440) and the second auxiliary circuit (460) are configured to match the source impedance to the input impedance at the second frequency.

Description

technical field [0001] The present disclosure relates to a dual-band power amplifier circuit for a microwave generator. More specifically, the present disclosure relates to a microwave ablation generator that includes a dual-band power amplifier circuit that simultaneously amplifies a signal having one frequency and a signal having another frequency Signal. Background technique [0002] Typically, the microwave source of a microwave generator generates a signal with a single frequency, the power of which is amplified to a certain amplitude by a power amplifier. The generated signal travels from the microwave source to the power amplifier through a transmission line. Each end of the transmission line is a critical boundary point where generated signals may be reflected when there is an impedance mismatch around the critical boundary point. Traveling and reflected signals may overlap or add to each other, which means that the signals are boosted at some locations and attenu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03F1/56H03H7/38
CPCH03F1/56H03H7/38H03F3/19H03F3/245H03F2200/111H03F2200/222H03F2200/387H03F2200/261A61B2018/00577A61B2018/1823A61B18/1815A61B2018/1876H03F3/21H03F2200/255H03F2200/423
Inventor 廖仲禹
Owner TYCO HEALTHCARE GRP LP