Reducing the beam squint in scanned leaky-wave antennas using coupled SIW cavities
2016 IEEE Antennas and Propagation Society International Symposium, APSURSI 2016 - Proceedings
- Fecha: 25 October 2016
- Páginas: 77-78
- ISBN: 9781509028863
- Source Type: Conference Proceeding
- DOI: 10.1109/APS.2016.7695747
- Document Type: Conference Paper
- Publisher: Institute of Electrical and Electronics Engineers Inc.
© 2016 IEEE.The systematic design of broadband, directive, scanned planar leaky-wave antennas using coupled-cavity substrate integrated waveguide technology is reported in this work. The design methodology is based on the optimization of the corresponding transverse resonance phase equation, so that a constant scanning angle condition is satisfied for a wide frequency band. This design process is validated with full-wave simulations of a 4th order-cavity optimized design. A 3dB scanned pattern bandwidth of 1.5GHz with 10dBi directivity at a central frequency of 15GHz (10% fractional bandwidth), is reported for 30° elevation scanning angle. This is a much higher bandwidth than conventional 1.7% bandwidth associated to the same type of antenna with a single SIW cavity.