公开(公告)号：WO2013123155A2

公开(公告)日：2013-08-22

申请号：PCT/US2013026090

申请日：2013-02-14

Applicant: MICROCHIP TECH INC

Inventor： PETER DIETER

IPC: H04B1/38

CPC classification number: H04B1/3838 ,  G01R27/2605 ,  H01Q1/50 ,  H03K17/955 ,  H04B17/103 ,  H04W52/18 ,  H04W52/367 ,  H04W64/00

Abstract: Detection of an increase in a mismatch of an antenna of a radio frequency (RF) device and/or a change in a capacitance value of the antenna indicates proximity of a body to the antenna. Upon detection of proximity of a body to the antenna, reduction of transmit power of the RF device may be done to meet Specific Absorption Rate (SAR) level regulations.

Abstract translation: 检测射频（RF）装置的天线不匹配的增加和/或天线的电容值的变化表示身体与天线的接近。 当检测到身体与天线的接近时，可以降低RF设备的发射功率以满足特定吸收率（SAR）水平的规定。

公开(公告)号：DE19653566A1

公开(公告)日：1998-07-02

申请号：DE19653566

申请日：1996-12-20

Applicant: MICROCHIP TECH INC

Inventor： PETER DIETER

IPC: H03K3/0231 ,  H03M1/60 ,  H03K3/01

Abstract: The convertor has two voltage comparators (COMP1,COMP2) connected serially via a charge circuit (R7,C2). The converter also has an inverting circuit (TR1) connected after the second comparator (COMP2). The invertor generates a pulse output signal (Fout) at an open drain terminal (RA4). The convertor also has another charge circuit (C1,R5,R6,CLKout). The second charge circuit feeds back the pulse output signal at the open drain terminal of the inverting circuit to the two serially connected voltage comparators.