Periodic Collinear-Slotted Leaky Wave Antenna With Open Stopband Elimination
- Resource Type
- Periodical
- Authors
- Mallahzadeh, A.; Mohammad-Ali-Nezhad, S.
- Source
- IEEE Transactions on Antennas and Propagation IEEE Trans. Antennas Propagat. Antennas and Propagation, IEEE Transactions on. 63(12):5512-5521 Dec, 2015
- Subject
- Fields, Waves and Electromagnetics
Aerospace
Transportation
Components, Circuits, Devices and Systems
Substrates
Arrays
Slot antennas
Periodic structures
Antenna radiation patterns
Antenna arrays
Bandwidth
Leaky wave antenna
Ridged substrate waveguide
Transverse resonance technique
Low cross polarization
Open stop band elimination and Slot array antenna
- Language
- ISSN
- 0018-926X
1558-2221
A low cross-polarization periodic-slotted ridged substrate-integrated waveguide (RSIW) leaky wave antenna (LWA) array is presented. Parametric constraints of the structure were investigated to realize a periodic leaky wave antenna (PLWA) with the ability of scanning from backward endfire into the forward quadrant. An appropriate multimode transverse equivalent network (TEN) is presented for the proposed antenna and values of leakage rate and phase constant for different parameters of the structure were extracted using the transverse resonance technique (TRT). The obtained results were compared to those achieved from HFSS software simulations. The open stopband in the broadside is eliminated using certain dimensions for the structure. By simultaneously manipulating a number of parameters, a variable ${\alpha}$ and constant ${\beta}$ are resulted so that the desired sidelobe level (SLL) can be realized. The proposed structure was simulated and then manufactured. Simulation results show good agreement with measurement results.