Research/Patents/US 4918458
US 4918458

SECONDARY RADAR TRANSPONDER

Assignee

DAIMLERCHRYSLER AG

Filed

May 14, 1980

Granted

Apr 17, 1990

Location

WANGEN DE

Abstract

A secondary radar transponder on a mobile target has an antenna arrangement which can receive interrogation signals from all directions and radiate reply signals. The antenna arrangement includes several individual antennas, each of which, with its primary lobe, covers a specific sector of the entire 360° range and is connected to a receiver, so that through receiving level comparison, that particular sector from which the interrogation signal incides can be ascertained. The reply signal is then radiated only by the individual antenna covering that particular sector. The transponder is particularly suited for identification friend-foe (IFF) purposes.

Source: Google Patents

35 USC §181 Secrecy Order

Imposed

Dec 28, 1981

Rescinded

Nov 9, 1988

Duration

6 years, 10 months

Inventor

  • 1ANTON BRUNNER

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Back to patent indexSource: USPTO 35 USC §181 secrecy order records