AN/APG-77
AN/APG-77 in the National Electronics Museum | |
| Country of origin | United States |
|---|---|
| Manufacturer | Westinghouse (acquired by Northrop Grumman), Texas Instruments (acquired by Raytheon) |
| Introduced | 2012 |
| Type | Solid-state active electronically scanned array (AESA) |
| Frequency | X-band 8–12 GHz (3.7–2.5 cm) |
| Range | >320 mi (510 km) |
| Diameter | 3 ft (0.91 m) |
| Azimuth | 120° |
| Power | 20 kW peak |
The AN/APG-77 is a multifunction X-band, low probability of intercept radar (LPIR) installed aboard the F-22 Raptor fighter aircraft. The radar was designed and initially built by Westinghouse and Texas Instruments, and production continued with their respective successors Northrop Grumman and Raytheon after acquisition.
It is a solid-state, Active Electronically Scanned Array (AESA) radar whose design is based on the AN/APG-66/68/80(V) family of fire control radars. Composed of 1,956 transmit/receive modules (TRM), each about the size of a gum stick, it can perform a near-instantaneous beam steering (in the order of tens of nanoseconds).
In accordance with the Joint Electronics Type Designation System (JETDS), the "AN/APG-77" designation represents the 77th design of an Army-Navy airborne electronic device for radar fire-control equipment. The JETDS system is also now used to name all Department of Defense and some NATO electronic systems.