232 meters (elevation) in size. The brand new antenna contains 1536 transmit-receive avenues, that are planned when you look at the twenty four columns (azimuth) and 64 rows (elevation), and you may marketed over 4 boards.
The effectiveness of the entire antenna comes because of the several APUs (Antenna Strength Products), and that distributed a power shuttle so you can five antenna panels and you will control new aperture arrangement of the permitting otherwise disabling the fresh new hot Butel girl direct current (DC) converter into the for every single committee.
The new Antenna Screen Product (AIU) regulation all of the antenna ray forming and you can direction functions getting commands in the electronic devices subsystem, interpreting brand new sales, and you may submitting the fresh ray handle sales in order to five panels regarding sort of study coach. The new stage and gain setup of all height beams, along with 205 correct-searching and you can 205 left-lookin beams, is actually kept in AIU. The fresh new AIU get new phase and you will get setup of one’s azimuth steering ray in the form of from inside the-orbit calculation.
Giving Gain and Circulator Products (TGCU) enhance new providing indicators gotten away from electronics subsystem to-drive this new antenna, found signals on antenna, and you can publish these to brand new electronics subsystem. Circulators are involved to separate your lives new shipping and getting paths interfacing on the electronics subsystem. A few TGCUs are accustomed to push and you may found on antenna having H and you may V polarization correspondingly.
This new step 1:32 divider is put between the TRM calibration slots and column calibration port to spreading otherwise merge H and you will V inner calibration indicators
When providing, new laws waveform try increased by Radio frequency (RF) strength amp and you may separated because of the a-1:dos divider for the TGCU to drive the fresh new H otherwise V polarization antenna. The selection of transmitting polarization can be simply used from the permitting the fresh new related amp situated in TGCU. New polarization set of antenna boards by the time manage is even requisite since it can boost the new get across-polarization isolation.
The brand new H or V polarization indicators acquired in the A great and B panels try combined, called HAB otherwise VAB, following divided into one or two signals, in order to means redundant RF paths to increase the device reliability, plus signals regarding C and you may D boards
A power block drawing of one antenna panel is given when you look at the Profile fifteen. At panel peak, RF interconnection between the articles in addition to remaining radar is provided of the about three identical step 1:6 stamina dividers. Brand new control shuttle and stamina bus try marketed out of panel harbors in order to half a dozen line modules.
This new antenna was an effective modulated framework you to talks of a line due to the fact a fundamental component, having its one Line Software Equipment (CIU), one to Column Fuel Product (CPU), 7 Time-delay Devices (TDU), 16 Transmit-Found Modules (TRM), thirty two dual-polarization radiators, three-power dividers, as well as the elevation jet shipping network.
In the column module level, two step 1:cuatro plus one step one:thirty two energy dividers are accustomed to software the rest of new antenna committee regarding RF highway. The fresh new step 1:4 divider directs H otherwise V signals into the TDU getting indication, and you can integrates brand new gotten signals from the TDU harbors to your H otherwise V efficiency column RF harbors.
Four Shown-Located (TR) channels is embedded in one TRM in just that interface with this new TDU. Per patch radiator has H and you may V nourishes, which happen to be completely independent on the giving and laws reception, and you may links which have several TR avenues from inside the H and V polarization, respectively.
A good waveguide position radiator can be used to attenuate cross polarization and you may boost radiation overall performance. This new picked row spacing of one’s radiator permits the antenna which have a great ±20° learning angle inside level in place of enjoyable grating lobes, which is enough and very important to covering the search perspective needs by the twelve observing settings, particularly Elizabeth means. Yet not, column spacing of your own radiator is difficult to fit the rigid standards from reduced grating lobes in the case of a beneficial ±step one.9° reading perspective regarding azimuth expected from the P function. Thank goodness, the latest grating lobe is going to be kept out-of extracting into the azimuth ambiguity from the selecting the proper PRF.