SHIROKOV ACTIVE TRANSCEIVING ANTENNA Russian patent published in 2016 - IPC H01Q13/10 H01Q23/00 

FIELD: antennas.

SUBSTANCE: active transceiving antenna belongs to antenna engineering and can be used in radio communication systems, radio navigation systems, radars. Especially useful application of the active transceiving antenna can be when building antenna arrays. Novelty of the active transceiving antenna is implementation of its operation in the mode of reception and transmission simultaneously. Active transceiving antenna consists of a field-effect transistor, a blocking capacitor and the microstrip antenna itself on a dielectric substrate with a shielding plate. Microstrip antenna has leads (branches), which through holes in the shielding plate are connected to the field-effect transistor in various circuit configurations and with a high-frequency connector of feeding and recording radio-frequency signals. Leads of the microstrip antenna connection with the field transistor form a positive feedback, which provides regenerative amplification of signals. Besides, this amplification is carried out both for received by the antenna signals and by recording of already amplified signals at the high-frequency connector of the active antenna, and for signals transmitted to this high-frequency connector and then amplified by the regenerative amplifier with subsequent radiation of electromagnetic waves of the microstrip antenna itself.

EFFECT: to eliminate self-excitation of the circuit it is necessary either to select parameters of the field-effect transistor and the position of the microstrip antenna leads, or to supply external control voltage to the field-effect transistor in various circuit configurations.

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