FIELD: microwave engineering; electromagnetic signal transmitting and receiving devices of Doppler radars. SUBSTANCE: antenna has flat rectangular radiator; antenna transmitter and receiver feeding points are spaced through λ/4 and λ/6, respectively, where λ is wavelength in dielectric, from reflector center perpendicular to its wide side; inserted in base of transmitter transistor is line section open at end whose length can be found from formula given in description of invention. Geometric center of radiator is aligned with screen; collector of transmitter transistor is connected to radiator. EFFECT: simplified design and enlarged operating range of antenna. 1 dwg
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