Shaped-conical radiation pattern performance of the backfire quadrifilar helix
- 1 May 1975
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Antennas and Propagation
- Vol. 23 (3), 392-397
- https://doi.org/10.1109/tap.1975.1141084
Abstract
It is shown that shaped-conical radiation patterns can be realized by extending the resonant fractional-turn quadrifilar helix to an integral number of turns, i.e., the radiated energy can be concentrated into a cone with the gain decreasing from a maximum at the edge of the cone to a local minimum at the center. This pattern shape is near optimum for many spacecraft communications and navigation applications, providing approximately 3 dB improvement over cardioid shaped patterns.Keywords
This publication has 3 references indexed in Scilit:
- The quadrifilar helix antennaIEEE Transactions on Antennas and Propagation, 1974
- Spacecraft and ground station applications of the resonant quadrifilar helixPublished by Institute of Electrical and Electronics Engineers (IEEE) ,1974
- Resonant quadrafilar helixIEEE Transactions on Antennas and Propagation, 1969