S.A. Antipov1, Yu.E. Kalinin2, A.V. Ostankov3, E.G. Khripunov4, S.Yu. Dachian5

1−4 Voronezh State Technical University (Voronezh, Russia)

5 University of Lille (Villeneuve-d'Ascq, France)

Statement of the problem. Under one-sided excitation of the leaky-wave antenna aperture (LWA), developed on the basis of traditional right-handed transmission line (positive magnetic permeability and permittivity) due to Bragg diffraction, it is extremely difficult to provide a continuous scanning sector, including the direction of normal to the aperture.

Purpose of work. Verify the efficiency of the Bragg diffraction elimination technique and develop a compact composite right/lefthanded (CRLH) LWA.

Results. The CRLH unit-cell is synthesized on the basis of half-wave substrate-integrated waveguides (HMSIW) technology by introducing of one double square complementary split-ring resonator (CSRR) mounted on the top wall of the HMSIW. A technique for optimizing the dispersion characteristics of the unit-cell has been developed according to the frequency characteristics of the Sparameters, obtained in full-wave simulation, and using the original equivalent circuit, representing the structure of the designed cell. The optimal number of balanced unit-cells is found, for which the required gain and efficiency of LWA are achieved.

Practical significance. The use of CRLH and, in particular, a transmission line based on the developed unit-cell makes it possible to design compact and efficient LWAs with a continuous scanning sector and directional pattern in a sector of 90° and even more.   Acknowledgments. The reported study was funded by RFBR and CNRS, project number 20-51-15001.

Antipov S.A., Kalinin Yu.E., Ostankov A.V., Khripunov E.G., Dachian S.Yu. A compact composite right/left-handed leaky wave scanning antenna. Radiotekhnika. 2021. V. 85. № 6. P. 34−39. DOI: https://doi.org/10.18127/j00338486-202106-06 (In Russian)

1. Ostankov A.V., Antipov S.A., Kalinin Ju.E. Analiz i sintez raskryva antenn difrakcionnogo izluchenija, postroennyh na osnove kvaziperiodicheskih grebenchatyh reshetok. Voronezh: FGBOU VO «VGTU». 2016. 181 s. (In Russian)
2. Caloz C., Itoh T. Novel microwave devices and structures based on the transmission line approach of meta-materials. IEEE MTT-S International Microwave Symposium Digest. 2003.
3. Caloz C., Itoh T., Rennings A. CRLH metamaterial leaky-wave and resonant antennas. IEEE Antennas and Propagation Magazine. 2008. V. 50. Iss. 5. P. 25-39.
4. Sarkar A., Adhikary M., Sharma A., et al. Composite right/left-handed based compact and high gain leaky-wave antenna using complementary spiral resonator on HMSIW for Ku band applications. IET Microwaves, Antennas & Propagation. 2018. V. 12. Iss. 8.  P. 1310-1315.