Antennas for wide bandwidth signals
AssigneeSperry Corporation
InventorsDavid Lamensdorf, Kenneth W. Robbins, Gerald F. Ross
Life of this patent
Estimating the term…
Abstract
A system for transmitting and receiving very wide instantaneous bandwidth signals. Synchronized short pulse generators are positioned at the feed location of each element of a linear array of short capped monopole antennas to sequentially excite the antenna elements which are spaced in accordance with the sequential interval to provide a beam in the desired direction and space. Reflections of the radiated short pulses are received by a feed monopole backed by a reflecting monopole and coupled to a short pulse receiver through a duplexing switch.
Claims27
A short pulse antenna system comprising:
- means for applying trigger pulses;
- charging means responsive to said trigger pulses for supplying charging pulses;
- pulse means charged in response to pulses coupled thereto from said charging means;
- means responsive to said charging means and coupled to said pulse means for providing discharge pulses to said pulse means at predetermined time intervals subsequent to said charging pulses to discharge said pulse means and establish a sequence of short pulses of predetermined duration, preselected rise time, and having said predetermined time intervals therebetween;
- and
- an array of antenna elements coupled to receive pulses from said pulse means in corresponding sequence for providing radiated pulses, said antenna elements having spacings therebetween equal distances traveled by light propagating in free space for a time equal to said predetermined time interval.
A short pulse antenna system comprising:
- means for supplying a trigger pulse;
- charging means responsive to said trigger pulse for supplying a charging pulse:
- discharging means responsive to said trigger pulse for supplying a discharging pulse at a predetermined time after said charging pulse;
- and
- pulse means coupled to said charging means and said discharging means for providing a sequence of short pulses having preselected rise times in response to said charging and discharging pulses, said sequence having predetermined time intervals between pulses;
- and
- a plurality of antenna elements coupled to receive said short pulses in corresponding sequence for providing radiated pulses, said antenna elements having spacings therebetween equal to distances traveled by light propagating in free space for a time equal to said predetermined time intervals.
Dependencies are inferred from the claim text.