A novel turnstile slot antenna is reported, the antenna being for and integral with a spacecraft having a substantially cylindrical body portion. The antenna comprises a circumferential slot about the periphery of the spacecraft body portion with an annular wave guide cavity defining a radial transmission line disposed within the spacecraft body portion behind and in communication with the circumferential slot. Feed stubs and associated transmission apparatus are provided to excite the annular cavity in quadrature phase such that an omnidirectional, circularly polarized, rotating radiation pattern is generated. The antenna ensures continuous telemetry and command coverage with the spacecraft.
Turnstile Slot Antenna
1972
14 pages
Report
No indication
English
NTIS | 1974
|NTRS | 1974
|NTRS | 1973
|Broadband Modified Turnstile Antenna Patent Application
NTIS | 1969
|