Automatic direction finder antenna preamplifier processor

Details Automatic direction finder antenna preamplifier processor Automatic direction finder antenna preamplifier processor

1978-01-23

1979-06-19

Wilbur, Maynard R.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343119, 340 6R, 330264, G01S 300, H03F 345

Patent

active

041588436

ABSTRACT:
A relatively small directional loop antenna adapted for use in an airborne automatic direction finder (ADF) is made to perform like a physically larger loop while being broadly tuned to a mean operating frequency. The total input equivalent noise source is kept low by coupling the loop into an impedance comprised of an active circuit. The active circuit is designed in conjunction with an active feedback circuit into which the ADF sense antenna is fed to maintain a relatively constant phase difference between the ADF loop and sense signals.

REFERENCES:
patent: 2214342 (1940-09-01), Neufeld
patent: 3778834 (1973-12-01), Poppe et al.
patent: 3795000 (1974-02-01), Bell, Jr. et al.
patent: 3898576 (1975-08-01), Fukaya
patent: 3922614 (1975-11-01), VAN DE Plassche
patent: 3922634 (1975-11-01), Warner
patent: 3935575 (1976-01-01), Leisterer et al.
patent: 4000474 (1976-12-01), Todokoro
patent: 4003060 (1977-01-01), Broce et al.
patent: 4087817 (1978-05-01), Sawicki et al.
John Markus, Guidebook of Electronic Circuits, pp. 12, 14, McGraw-Hill, 1974.

Affiliated with

Also associated with

Rating

Automatic direction finder antenna preamplifier processor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Automatic direction finder antenna preamplifier processor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automatic direction finder antenna preamplifier processor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-57961