# ISISPACE S-Band TMTC Antenna
*component . products*

ISISPACE's S-band TMTC antenna is a passive CubeSat antenna covering commercial S-band uplink and downlink allocations.

## Specifications
- **manufacturer**: isispace
- **deployment context**: orbital
- **entity type**: component
- **last verified date**: 2026-05-28
- **verified by**: operator
- **claim status**: unclaimed
- **subtype**: comms-ttc
- **provider**: isispace
- **attributes**: {"kind":"component","product_status":null,"manufacturer":"isispace","description":"ISISPACE's S-band TMTC antenna is a passive CubeSat antenna covering commercial S-band uplink and downlink allocations.","sensor":null,"bus":null,"ground_segment":null,"launcher":null,"analysis_service":null,"deployment_context":"orbital"}

## Editorial
The ISISPACE S-Band TMTC Antenna is a passive CubeSat antenna covering commercial S-band uplink (2025-2110 MHz) and downlink (2200-2290 MHz) frequency allocations for telemetry, tracking, and command operations.[^s-band-tmtc-page] The antenna uses a Rogers PCB design and conforms to IPC-A-610 Class 3 standards for PCB fabrication and assembly, as stated by ISISPACE.[^s-band-tmtc-page] Flight qualification is confirmed from 2025 per the ISISPACE product page.[^s-band-tmtc-page]

The antenna delivers a boresight gain of greater than 6 dBic at center frequency, with a headline gain of up to 8 dBic and a half-power beam width of 100 degrees.[^s-band-tmtc-page] Return loss exceeds 10 dB across both frequency ranges, axial ratio is below 3 dB within 80 degrees of boresight, and polarisation is right-hand circular (RHCP).[^s-band-tmtc-page] RF power handling is rated at 2 W.[^s-band-tmtc-page]

The antenna connects via a straight MMCX connector, with a diameter of 78 mm and a total height of 16.0 mm including the connector.[^s-band-tmtc-page] Mass is below 60 g and the operating temperature range is -20 to +60 deg C.[^s-band-tmtc-page] ISISPACE states compatibility with its own S-band transceiver as well as other manufacturers' systems.[^s-band-tmtc-page]

## Sources
- [s-band-tmtc-page] | ISISPACE S-Band TMTC Antenna product page | https://www.isispace.nl/product/s-band-tmtc-antenna/ | tier=operator-marketing | accessed=2026-05-28

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Source: https://eo-atlas.org/products/component/isispace-s-band-tmtc-antenna
Maintainer: SpectraWorks B.V. (CC-BY 4.0)