RADALT Patch Antenna - 20-21
Type 20-21 is a radar altimeter patch antenna (RADALT). The antenna is designed to exhibit the electrical characteristics of ARINC 707 and is a conformal design. The antenna operates with a broadside linear polarisation coverage in the Radar Altimeter (RADALT) band to allow transmission and reception of microwave signals from two adjacent antennas.
- Conformal
- Lightweight
- Isolation ≤ 75dB at 20 inch spacing
- Beam width ≤40 deg (H-plane), ≤45 deg (E-plane)
- Side Lobe < -40dB
Specifications
- Electrical Specs
- Mechanical Specs
- Standard Specs
Electrical Specs
- Minimum Frequency
- 4200
- Maximum Frequency
- 4400
- Impedence
- 50
- Return Loss VSWR
- 4200 - 4400 MHz: <2.0:1 (Max)
- Gain
- +10 dBiL
- Polarization
- Vertical
- Radiation Pattern Azimuth
- Omnidirectional
- Average Power Watts
- 5
Mechanical Specs
- Full Dimensions LxWxH mm
- 93 x 89 x 4.3
- Mass kg
- 0.11
- Connector Type
- TNC Type Female
Standard Specs
- Altitude ft
- 50000
- Continuous Operating Temperature Min - C
- 55
- Continuous Operating Temperature Max C
- 70
- Vibration
- RTCA DO-160C, Section 8, Curve C
- Standards
- DO-160
Get in touch
Chelton Limited, Marlow HQ
The Chelton Centre
Fourth Avenue
Marlow
Buckinghamshire
SL7 1TF
United Kingdom
CAGE Code: U1907
Fourth Avenue
Marlow
Buckinghamshire
SL7 1TF
United Kingdom
CAGE Code: U1907
