Communications: radio wave antennas – Antennas – Balanced doublet - centerfed
Patent
1980-02-08
1982-01-12
Tubbesing, T. H.
Communications: radio wave antennas
Antennas
Balanced doublet - centerfed
343 5DD, 343 8, G01S 1304
Patent
active
043108423
ABSTRACT:
When the transmitter is operated in the keyed mode, the HF properties of the Gunn diode change because the diode warms up during the pulses and cools again in the pulse intervals. With a transmission frequency of 30.5 GHz a frequency change of 10 MHz was found during the duration of a pulse, this frequency change being highest at the beginning of the pulses and lowest at the end of the pulses. For this reason the evaluation circuit is constructed so that it evaluates only during a very short period of the pulse duration. Then, namely, the doppler signal can be made "visible" to a sufficient extent.
REFERENCES:
patent: 3603999 (1971-09-01), Palleiko
patent: 4160248 (1979-07-01), Hubka et al.
Feddern Uwe
Siebeneck Jurgen
Briody Thomas A.
Kraus Robert J.
Treacy David R.
Tubbesing T. H.
U.S. Philips Corporation
LandOfFree
Pulsed Doppler radar system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pulsed Doppler radar system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pulsed Doppler radar system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1543657