Accession Number:

ADD014965

Title:

Acoustic Transponder Receiver Circuit.

Descriptive Note:

Patent, Filed 7 Dec 88, patented 16 Apr 91,

Corporate Author:

DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s):

• Cyr, Reginald

Report Date:

1991-04-16

Pagination or Media Count:

8.0

Abstract:

A transponder that responds differently to two different input signals. The first input signal is at a first frequency. The first input signal is detected by a first powered detector that operates at the first frequency. The transponder responses in a first mode to the first input signal. The second input signal consists of short pulses at the first frequency and at a second frequency. The transponder responds to short pulses at the first frequency by powering a second detector. The first and second detector then detect the second input signal. The transponder responds in a second mode to the second input signal. Author

Descriptors:

• ACOUSTIC DETECTORS
• ACOUSTIC EQUIPMENT
• CIRCUITS
• DETECTORS
• FREQUENCY
• INPUT
• RESPONSE
• SHORT PULSES
• SIGNALS
• TRANSPONDERS

Subject Categories:

• Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE