公开(公告)号：US09429528B2

公开(公告)日：2016-08-30

申请号：US13900668

申请日：2013-05-23

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Phillip Michel Nadeau

IPC: G01N22/00 ,  G01R27/28

CPC classification number: G01N22/00 ,  G01R27/28

Abstract: A method to detect a gas absorption line that includes alternately transmitting and sweeping two radio frequency (RF) signals through an absorption cell, wherein the two RF signals are transmitted at different frequencies separated by a range and are swept across a span of frequencies in a microwave and millimeter wave regions of a frequency spectrum. Receiving the RF signals by a receiver and analyzing the received signals by a closed loop system for relative absorption by a gas due to an absorption line of the gas in the span of the swept frequencies. Detecting the absorption line of the gas when the two RF signals straddle the gas absorption line and the relative absorption by the two RF signals is equal.

Abstract translation: 一种检测气体吸收线的方法，其包括通过吸收单元交替地发射和扫掠两个射频（RF）信号，其中两个RF信号以不同频率发射，并以扫描范围的频率跨越 微波和毫米波区域的频谱。 由接收器接收RF信号，并通过闭环系统分析接收到的信号，以便由于在扫频频率的跨度内的气体的吸收线由气体进行相对吸收。 当两个RF信号跨过气体吸收线并且两个RF信号的相对吸收相等时，检测气体的吸收线。

公开(公告)号：US09325334B2

公开(公告)日：2016-04-26

申请号：US13916331

申请日：2013-06-12

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Phillip Michel Nadeau ,  Django Trombley ,  Baher S. Haroun ,  Srinath Mathur Ramaswamy

IPC: H03L7/26

CPC classification number: H03L7/26

Abstract: A frequency reference device that includes a frequency reference generation unit to generate a frequency reference signal based on an absorption line of a gas.

Abstract translation: 一种频率参考装置，包括频率参考产生单元，用于基于气体的吸收线产生频率参考信号。

公开(公告)号：US09128023B2

公开(公告)日：2015-09-08

申请号：US13916273

申请日：2013-06-12

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Phillip Michel Nadeau ,  Baher S. Haroun ,  Srinath M. Ramaswamy

IPC: G01S7/40 ,  G01N22/00 ,  G01J3/28 ,  G01S7/41 ,  G01J3/42 ,  G01S7/00

CPC classification number: G01N22/00 ,  G01J3/28 ,  G01J3/42 ,  G01S7/40 ,  G01S7/41

Abstract: A technique for removing the background from a transmission spectrum including determining performance characteristics of a detector, measuring a transmission spectrum that includes an absorption line, determining performance characteristics of a gas cell, and removing a background spectrum from the transmission spectrum by combining the transmission spectrum with the performance characteristics of the detector and the performance characteristics of the gas cell.

Abstract translation: 一种用于从传输频谱中去除背景的技术，包括确定检测器的性能特征，测量包括吸收线的透射光谱，确定气体单元的性能特征，以及通过组合透射光谱来从透射光谱中去除背景光谱 具有检测器的性能特征和气室的性能特征。