E. V. Zakharov1, Yu. V. Medvedev2, A. I. Skorodumov3, Yu. Ya. Kharlanov4
1 Lomonosov Moscow State University (Moscow, Russia)
2–4 16th Central Research Testing Institute of Communications of Ministry of Defense of the Russian Federation
(Mytishchi, Moscow Region, Russia)

Variants of construction of ring switched waveguide-slotted irradiators of toroidal dielectric lens antennas have been considered. One of the most practical variants for implementing a toroidal lens irradiator is the use of the main wave of a circular waveguide H11 and a polarization switch.

Study of the irradiator design on the main wave of the circular waveguide H11 has been carried out and the maximum achievable gain factors of antennas with such an irradiator have been determined. There are extremely achievable characteristics of homogeneous dielectric lens antennas with ring switched waveguide-slotted irradiators and a circular generating profile due to losses in the irradiator and aberration properties of the lens. For each value of the average loss level in one closed slot in the ring irradiator, there are an optimal number of slots that provides the maximum value of the antenna gain factor.

For antennas based on a homogeneous dielectric torus with ring switched waveguide-slotted irradiators and a circular generating profile, it is possible to achieve a gain factor of at least 18...20 dB in the entire scan sector 0°...360°.

The designs of scanning toroidal lens antennas have been proposed, allowing significantly increasing their achievable gain factor, reducing the mass and expanding the scanning sector: a scanning toroidal lens antenna with a non-aplanatic focusing geometric profile, a toroidal lens antenna with scanning in two planes, a toroidal lens antenna with scanning in a full solid angle.

Zakharov E.V., Medvedev Yu.V., Skorodumov A.I., Kharlanov Yu.Ya. Toroidal dielectric lens antennas with ring switched waveguide-slotted irradiators. Antennas. 2023. № 5. P. 52–62. DOI: https://doi.org/10.18127/j03209601-202305-06 (in Russian)

1. Patent № 3255453 US. Non-uniform dielectric toroidal lensis. R.L. Horst. 1966.
2. Levchenko S.N., Kharlanov Yu.Ya. Issledovanie antenny na osnove dielektricheskogo tora. Nauchno-tekhnicheskij sbornik. M: 16 TsNIII MO. 1992. Vyp. 1. S. 18–20. (in Russian)
3. Patent № 2147150 RF. Skaniruyushchaya toroidal'naya linzovaya antenna. S.N. Levchenko, Yu.Ya. Kharlanov. Opubl. 27.03.2000. (in Russian)
4. Zakharov E.V., Levchenko S.N., Kharlanov Yu.Ya. Koeffitsient usileniya polifokal'nykh dielektricheskikh linzovykh antenn s kol'tsevymi kommutiruemymi volnovodno-shchelevymi obluchatelyami. Antenny. 2001. № 9. S. 23–29. (in Russian)
5. Zakharov E.V., Levchenko S.N., Kharlanov Yu.Ya. Issledovanie i optimizatsiya kharakteristik toroidal'nykh linzovykh antenn. Radiotekhnika i elektronika. 1998. T. 43. № 5. S. 571–573. (in Russian)
6. Kharlanov Yu.Ya. Linzovye antenny na osnove odnorodnogo dielektricheskogo shara: kharakteristiki i potentsial'nye vozmozhnosti. Antenny. 2004. № 2. S. 31–46. (in Russian)
7. Zelkin E.G., Petrova R.A. Linzovye antenny. M.: Sov. radio. 1974. (in Russian)
8. Kharlanov Yu.Ya. Rezul'taty issledovanij i perspektivy primeneniya linzovykh antenn v sredstvakh svyazi diapazonov MMV i SMV. Sb. tezisov dokladov XLIX Nauch. sess., posvyashchennoj Dnyu radio. Ch. 1. M.: Ros. NTO radiotekhn., elektron. i svyazi. 1994. S. 39–40. (in Russian)
9. Patent № 2236076 RF. Toroidal'naya linzovaya antenna s elektronnym skanirovaniem v dvukh ploskostyakh. E.V. Zakharov, A.S. Il'inskij, Yu.V. Medvedev, E.I. Skvorchevskaya, Yu.Ya. Kharlanov. Opubl. 10.09.04. Byul. № 25. (in Russian)
10. Patent № 2297698 RF. Toroidal'naya linzovaya antenna s elektricheskim skanirovaniem v polnom telesnom ugle. Yu.V. Medvedev, A.I. Skorodumov, Yu.Ya. Kharlanov. Opubl. 20.04.07. Byul. № 11. (in Russian)
11. Kashin S.V. Raschet linz iz odnorodnogo dielektrika. Radiotekhnika. 1990. № 1. S. 87–88. (in Russian)
12. Medvedev Yu.V., Kharlanov Yu.Ya. Kharakteristiki skanirovaniya kupol'nykh linzovykh antenn dlya svyazi v dvizhenii. Antenny. 2004. № 2. S. 20–25. (in Russian)