AUTOMATIC DIRECTION FINDER ANTENNA ARRAY
Assignee
RCA CORPORATION A DE CORP
Filed
Dec 12, 1983
Granted
May 23, 1989
Location
CHERRY HILL NJ US
Abstract
An automatic direction finder antenna array having a plurality of pairs of oppositely positioned antenna elements arranged radially from a common center with each pair forming a cardioid radiation pattern when energized. Switching apparatus energizes successive antenna pairs to produce a rotating cardioid pattern but with the cardioid being switched back and forth 180° at a higher switching frequency when each pair of antennas is energized during the rotating function. The antenna AX whose output bears the lowest ratio R to the output of its oppositely positioned antenna is determined as well as the antenna AZ having the largest output signal VZ. The precise angle of reception of a received signal is then determined from AX, AZ, and R.
Source: Google Patents
35 USC §181 Secrecy Order
Imposed
May 11, 1984
Rescinded
Nov 17, 1988
Duration
4 years, 6 months
Inventor
- 1EDWARD J. NOSSEN
Record Details
- Patent number
- US 4833478
- Application
- 06560218
- Aerospace match
- Yes
- Dataset source
- 35 USC §181 SO records
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