FA

FA Broadband Pyramidal Absorber
Features：
It is a carbon-loaded polyurethane foam absorber with flame retardant, and is the main material of various anechoic chambers. It has excellent broadband performance, good scattering and transmission attenuation properties under normal incidence and oblique incidence. When the ratio of material thickness (L) to operating wavelength (λ) is 0.4, 1, 2.5, and 8, the reflectivity (R_W) of normal incidence is -20 dB, -30 dB, -40 dB, and -50 dB, respectively. This material is available in a variety of thicknesses to meet different technical requirements.
 
Characteristics：
Appearance: Light blue pyramids. The tip of the FA type with a thickness of 400 mm or more is black.
Fire retardant: Meet the NRL REPORT 8093 TEST 1, 2, 3 of US Navy and the B2 requirements of national fire protection.
Power capacity: 0.15W/cm²
Operating temperature: -50°C ~90°C
 
Main performance indicators：

Model	Dimensions of Base (mm)	Thickness (mm)	Max. Reflectivity of normal incidence (-dB)
			Frequency (GHz)
			40	15	10	6	3	1.5	0.5	0.3	0.2
FA-30	500X500	30	40	35	30
FA-50	500X500	50	45	40	35	30
FA-70	500X500	70	45	45	40	30
FA-100	500X500	100	50	45	40	35	30
FA-150	500X500	150	50	50	45	40	35
FA-200	600X600	200	50	50	50	45	40	30
FA-300	600X600	300	50	50	50	50	40	35
FA-400	600X600	400	50	50	50	50	45	40
FA-500	600X600	500	50	50	50	50	45	40	30	25
FA-600	600X600	600	50	50	50	50	45	40	35	30	20
FA-700	600X600	700	50	50	50	50	50	40	35	30	20
FA-800	600X600	800	50	50	50	50	50	40	35	30	20
FA-900	600X600	900	50	50	50	50	50	45	35	30	20
FA-1000	600X600	1000	50	50	50	50	50	45	40	30	25
FA-1200	600X600	1200	50	50	50	50	50	45	40	35	30
FA-1500	300X300	1500	50	50	50	50	50	50	40	35	30