7.3m Ka Band Antenna

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DESCRIPTION
TECHNICAL
SPECIFICATIONS

Probecom provides antenna system rangind from 1.8m to 18.5m for satellite measurement and control, used in communication satellites, commercial satellites, scientiific satellites and manned spacecrafts from telecontrol and telemetry system, tracing and monitoring with features of high-efficiency, low sidelobe, wide frequency and monopolse automatic tracking. Probecom also provides feed system in various frequency, includes C band, Ku band, S band, L band, X band, C/X band and so on.

Probecom's Ka band antenna in X/Y pedestal structure is designed for low orbit satellite. It is dual shaped ring-focus antenna, has high accuracy, low weight and high stability. Antenna main reflector is made in corrugated horn feed, antenna pedestal is full motion X/Y type, both axes uses large gear transmission, gives high structural rigidity and pointing accuracy.

Electrical Specification
Type	KA73T
Operating Frequency, GHz	Ka-Band 4 ports
	Receive			Transmit
	17.7~20.2			27.0~30.0
Gain, dBi	59.8@17.7GHz			63.6@27.5GHz
Polarization	Circular
Axial Ratio, dB				0.5
VSWR	1.30			1.30
-3 dB Beam Width, Mid-band	0.16°@17.7GHz			0.11°@27.5GHz
Typical G/T（EL=30°，4-port）	34.8dB/K (110k LNA)
Feed Interface	WR-42			WR-28
Isolation, Tx to Rx, dB Tx/Tx ,Rx /Rx, Linear , dB	85 20
Side lobe	CCIR 580-4
Mechanical Specification
Antenna Diameter			7.3m
Antenna Type			Cassegrain
Pedestal Type			Az/El pedestal
Antenna Pointing Range		Azimuth Elevation	±90° （3 sections, 60° each） 5°~90°(Continuous)
tracking mode			monopulse auto tracking
tracking accuracy			0.02°
Environmental Specification
Operational Wind			61km/h
store upWind			115km/h
Temperature			-30°~+55°
Relative Humidity			100%
Solar Radiation			1135Kcal/h/m²
Operation altitude			3000m above sea
Seismic(Survival)			0.3g(H), 0.15g(V)
Ice Loading			13mm Operational; 30mm Survival