Dual Band Helical Antenna
MMA Design
Nested UHF membrane antenna covering two frequency bands (400-600 MHz and 800-1000 MHz) with an 8:1 compaction ratio — qualified to TRL 8 with a mission scheduled.
Technical specifications
- Frequency (low band)
- 400–600 MHz
- Frequency (high band)
- 800–1000 MHz
- Gain
- ≥10 dBic
- Axial ratio
- <3 dB
- Beam width
- ≥20°
- Peak power handling
- 100 W
- Stowed volume
- 50 in³
- Deployed volume
- 400 in³
- Compaction ratio
- 8:1
- Mass (incl. deployment control unit)
- 1.5 kg
- TRL
- 8
About
MMA Space’s Dual Band Helical Antenna is a nested UHF membrane antenna providing coverage across two frequency bands simultaneously. Achieving TRL 8 with a flight mission scheduled, the antenna delivers a minimum gain of 10 dBic per band with an axial ratio below 3 dB and a beamwidth of at least 20 degrees, supporting up to 100 W of peak power handling. The compact stowed volume of 50 in³ expands to 400 in³ deployed — an 8:1 compaction ratio — with a total mass including the deployment control unit of only 1.5 kg, making it well suited for smallsat TT&C and communications missions requiring dual-band coverage in a minimal package.
Documentation
No public datasheet yet — request the datasheet / ICD from the supplier.
