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Ku-band Monopulse Slotted Waveguide Antenna
This antenna is intended for high-resolution tracking radar application. The antenna contains of about 1400 radiating slots, that form pencil beam in the broadside direction with low sidelobes. The antenna is designed to operate in wide frequency bandwidth above 5%. In order to retain advanced antenna characteristics within such frequency bandwidth, each quarter of the antenna has been devided into 13 subarrays. Compact and effecient feeding strucuture have been developed to distribute power between the subarrays.
Fig. 1. Ku-band monopulse slotted waveguide antenna
Antenna Characteristics
| Operating bandwidth, GHz | 0.9 (in Ku-band) |
| Beam type | pencil |
| 3dB beam width (symmetrical), deg | 1.7 |
| Polarization | Linear/Vertical |
| Cross-polarization level, dB | <-30 |
| Side lobes level, dB | <-24 dB |
| Gain, dBi | >38 |
| VSWR | <1.4 |
| Diameter, mm | 600 |
| Height, mm | 16 |
| Weight, kg | 10 |