Patent · US Active

Object finder

US8803681B2 · kind B2 · utility

0Cited by

5References

10Claims

0Family size

Assignee

FAVEPC INC. · TW

Inventors

Hung-Cheng Chen · New Taipei, TW
Keng-Hao Chang · New Taipei, TW

Key dates

Filing date	Sep 9, 2011
Grant date	Aug 12, 2014
Priority date	—
Expiry date	Jul 25, 2032

Classification

Technology area (CPC G)Physics
CPC primaryG08B21/025
WIPO fieldControl
WIPO sectorInstruments

Abstract

A receiver of an object finder includes an antenna to receive a signal from a transmitter associated with the receiver, a PIN diode having a first terminal coupled with the antenna, and having a resistance that increases as a current flows therethrough decreases, and vice versa, a variable resistor coupled with the first terminal of the PIN diode to control the amount of a current flowing into the PIN diode, and a radio frequency integrated circuit (RF IC) having a first pin electrically coupled with second terminal of the PIN diode to receive the signal from the antenna via the PIN diode.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.