標題: Design of a Novel Microstrip Franklin Leaky-Wave Antenna Using the Eigenstate Approach
作者: Lu, Jeng-Hau
Ng, Herman Jalli
Kissinger, Dietmar
Jou, Christina F.
Wu, Lin-Kun
交大名義發表
National Chiao Tung University
關鍵字: Leaky-wave antennas (LWAs);open-stopband (OSB);periodic structures
公開日期: 1-七月-2019
摘要: This paper presents the design of a novel periodic leaky-wave antenna (LWA) using modified microstrip Franklin unit cells. Two additional quarter-wave couple-line sections are used to allow the cell to work with the n = -2 fast-wave harmonic. It allows the use of low-epsilon(r) substrates so the designed LWA is cost-effective, can be easily integrated with radar front-end circuits, and avoids the excitation of surface waves. A novel application of eigenstate analysis leads to a simpler and more intuitive approach for the implementation of the reflection cancellation concept to eliminate open-stopband (OSB) effects. This is realized in the proposed structure with the use of a pair of interdigital fingers and different widths for the two lines forming the coupled section. A general design flow is also proposed for the design of the unit cell and LWA. Finally, a 40 cell LWA is fabricated on a Rogers 3003 substrate with epsilon(r) = 3. The measured results show that the beam scans continuously from -54 degrees to +55 degrees when frequency is varied from 54.7 to 70 GHz, and no visible OSB effect is observed near the broadside direction.
URI: http://dx.doi.org/10.1109/TAP.2019.2911638
http://hdl.handle.net/11536/152269
ISSN: 0018-926X
DOI: 10.1109/TAP.2019.2911638
期刊: IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
Volume: 67
Issue: 7
起始頁: 4484
結束頁: 4494
顯示於類別:期刊論文