Elettronica SpA

Rome, Italy

Elettronica SpA

Rome, Italy
SEARCH FILTERS
Time filter
Source Type

Patent
Elettronica S.p.A. | Date: 2017-01-11

Disclosed herein is a photonic-assisted radio frequency spectrum scanning device for use in a receiver (100), including: a first optical waveguide arm (110) comprising, in cascade, an input end, a first electro-optical modulator (111), a tunable optical filter (112) and an output end, wherein said first electro-optical modulator (111) is designed to be connected to an antenna to receive therefrom an incoming radio frequency signal; a second optical waveguide arm (120) comprising, in cascade, an input end, a second electro-optical modulator (121), an optical delay line (122) and an output end; a mode-locked laser (101) connected, through an optical splitter (102), to the input ends of the first and second optical waveguide arms (110,120) to supply the latter with optical pulses; an optical hybrid coupler (105) connected to the output ends of the first and second optical waveguide arms (110,120) and operable to combine optical signals received from the latter to produce corresponding output optical signals; and photodetection means (131,132) connected to the optical hybrid coupler (105) to receive the output optical signals and configured to convert the latter into corresponding baseband electrical analog signals. The first electro- optical modulator (111) is configured to modulate the optical pulses supplied by the mode-locked laser (101) by means of the incoming radio frequency signal so as to carry out an optical sampling of the latter, whereby a modulated optical signal is produced, which is indicative of said optical sampling. The tunable optical filter (112) is operable to filter the modulated optical signal so as to select a portion of spectrum of the latter. The second electro-optical modulator (121) is operable to decimate the optical pulses supplied by the mode-locked laser (101). The optical delay line (122) is operable to delay the decimated optical pulses.


Method and apparatus for locating sources (P1,P2) emitting radio signals comprising a plurality of passive antennae (R11,R12,R21,R22,R30) arranged at different locations (S1,S2,S3), having- at least two pairs (R10,R20) of receiving antennae which are positioned in at least two different locations (S1,S2) situated ata suitable distance (D1) from each other;- at least one additional receiving antenna (R30) arranged at a third location (S3) situated at a suitable distance (D2,D3) from each one of the two said first locations (S1,S2);- devices for digitally processing the signals, mounted on each of said antennae and able to generate, for each signal received, a digital report containing at least the time of arrival (TOA) of the signal at the respective antenna;- a synchronization sysem able to supply a synchrnoizing signal to all the antennae;- a centralized date procesisng unit (E) able to process the information contained in the said reports received from the respective antennae;- a communications system which connects each antenna to the processing unit for tranmission of the respective reports.


Patent
Elettronica S.p.A. | Date: 2013-08-21

Disclosed herein is an antenna system (70) for Electronic Counter Measures, comprising a flat antenna array (71;80) of three or more sinuous slot antennas (712;81) arranged so as to form a triangular array lattice; wherein the flat antenna array (71;80) has a closed peripheral edge; wherein each sinuous slot antenna (712;81) includes a respective feeding structure (41) arranged on a bottom surface (713) of the flat antenna array (71;80); the antenna system (70) further comprising a hollow metallic structure (73), which includes: a base (732) having a closed peripheral edge; a closed side wall (733) rising from the closed peripheral edge of the base (732) up to a given height (H) where said closed side wall (733) ends with a closed top edge; and a hollow (731) defined by said base (732) and said closed side wall (733); wherein the hollow (731) is superiorly closed by the flat antenna array (71;80) whose closed peripheral edge is fixed on/to the closed top edge of the hollow metallic structure (73) and whose bottom surface (713) faces the hollow (731); the antenna system (70) further comprising a foam spacer (72) which fills the hollow (731) and keeps the sinuous slot antennas (712;81) spaced apart from the base (732) of the given height (H); wherein the given height (H) is equal to a quarter of a wavelength corresponding to a central operating frequency of the antenna array (71;80); wherein an absorbing sheet covers the base (732) on the bottom of the hollow (731), said absorbing sheet being designed to absorb surface currents on the base (732) on the bottom of the hollow (731); and wherein, for each sinuous slot antenna (712;81), the hollow metallic structure (73) further includes: a corresponding reflecting tapered element (734), which protrudes from the base (732) through the absorbing sheet and the foam spacer (72) into the hollow (731), is arranged below said sinuous slot antenna (712;81), and is designed to reflect back-radiation from said sinuous slot antenna (712;81); and a corresponding feeding turret (735), which protrude from the base (732) through the absorbing sheet and the foam spacer (72) into the hollow (731) up to the feeding structure (41) of said sinuous slot antenna (712;81), and which is coupled with the feeding structure (41) of said sinuous slot antenna (712;81).


Disclosed herein is a MMIC (200) that includes: an input stage designed to be connected to a microwave antenna to receive therefrom a balanced microwave signal; a differential amplifier (205) connected to the input stage and designed to output, in response to reception of the balanced microwave signal, a corresponding unbalanced microwave signal; a single-ended amplifier (209) connected to the differential amplifier (205); an output matching and biasing network (210), which is connected to the single-ended amplifier (209) to receive therefrom the amplified balanced microwave signal, and which is designed to be connected to a microwave transmission line to provide the latter with said amplified unbalanced microwave signal and receive therefrom a direct current power supply, to perform impedance matching between the single-ended amplifier (209) and said microwave transmission line, and bias the single-ended amplifier (209) on the basis of the direct current power supply.


Patent
Elettronica S.p.A. | Date: 2010-06-25

A method for generating and transmitting deception signals to location devices comprises use of tracking monopulse radars and associated apparatus to be installed on aircraft in particular of the rotary-blade type. The deception signals generated and sent to the tracking radar cause an angular deception, and such that, for example, the aircraft may be viewed by the radar in a direction different from the real direction.


Patent
Elettronica S.p.A. | Date: 2011-01-05

Method for generating and transmitting deception signals to location devices consisting of tracking monopulse radars and associated apparatus to be installed on aircraft in particular of the rotary-blade type. The deception signals generated and sent to the tracking radar cause an angular deception, namely the aircraft is viewed by the radar in a direction different from the real direction.


Patent
Elettronica S.p.A. | Date: 2012-09-26

Disclosed herein is a wide-open receiver (4) comprising a plurality of goniometric channels (41) each intended to be coupled with a respective antenna (5) to receive a respective incoming radiofrequency signal, and operable to obtain, on the basis of the respective incoming radiofrequency signal, a respective first video signal indicative of a power of said respective incoming radiofrequency signal, and a respective second video signal (Y) based on said respective first video signal. The wide-open receiver (4) further comprises a continuous-wave- protected channel (43) operable to receive a combined radiofrequency signal (C) based on the incoming radiofrequency signals received by all the goniometric channels (41), and to obtain, on the basis of the combined radiofrequency signal (C), a continuous-wave-free radiofrequency signal which is free of a continuous wave signal present in one or more of the incoming radiofrequency signal(s).


Patent
Elettronica S.p.A. | Date: 2016-10-19

A method of operation of a DIRCM system (2) for protecting a platform (4) against IR-guided missiles (5), wherein said DIRCM system (2) comprises a plurality of DIRCM subsystems (21,22) operable to track and jam IR-guided missiles (5); and wherein the DIRCM subsystems comprise a first DIRCM subsystem (21) and a second DIRCM subsystem (22), that are installed on the platform (4) so that: said first DIRCM subsystem (21) is operable to track and jam IR-guided missiles (5) in a first coverage region; said second DIRCM subsystem (22) is operable to track and jam IR-guided missiles (5) in a second coverage region; and both said first and second DIRCM subsystems (21,22) are operable to track and jam IR-guided missiles (5) in an overlap region, which includes a first handover sub-region adjacent to the first coverage region and a second handover sub-region adjacent to the second coverage region.


Patent
Elettronica S.p.A. | Date: 2016-11-30

Disclosed herein is an electronic warfare system (1,2), configured to operate in an electronic warfare mode and comprising processing means (14), that are configured to: receive an incoming analog signal; convert the incoming analog signal into an incoming digital signal; and, when the electronic warfare system (1,2) operates in said electronic warfare mode, perform a predefined electronic support measure or countermeasure function on the basis of the incoming digital signal. The electronic warfare system (1,2) is characterized by being further configured to operate in a data link communications mode, wherein the processing means (14) are further configured, when the electronic warfare system (1,2) operates in said data link communications mode, to perform a data link communications function by carrying out: a predefined digital demodulation on the basis of the incoming digital signal so as to extract information symbols carried by said incoming digital signal; and a predefined digital modulation by producing a communication digital signal carrying information symbols to be transmitted.


A method for locating sources emitting radio signals comprises arranging at least one first pair and one second pair of receiving antennae; arranging at least one additional receiving antenna; synchronizing all the antennae; acquiring with at least three antennae and/or at least two pairs of antennae, radio signals emitted by the source; digitally processing with each antenna, the signal received and generating a short report; sending with each antenna, the track report to a central processing unit; processing the track reports to form a global track file; sending to the antennae with the central processing unit, a suitable command for collecting data; digitally processing with each antenna, the signal received from the specific source and generating and storing a pulse report; sending the pulse reports to the central processing unit; calculating the TDOA for each signal; selecting and applying the procedure for identifying the coordinates of the transmitting antenna.

Loading Elettronica SpA collaborators
Loading Elettronica SpA collaborators