Ultra-low noise active electrically small antenna differential receiving device for long wave positioning navigation time service
The utility model discloses an ultra-low noise active electrically small antenna differential receiving device for long wave positioning navigation time service. The ultra-low noise active electrically small antenna differential receiving device comprises an electrically small antenna, a pre-amplifi...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The utility model discloses an ultra-low noise active electrically small antenna differential receiving device for long wave positioning navigation time service. The ultra-low noise active electrically small antenna differential receiving device comprises an electrically small antenna, a pre-amplification circuit electrically connected with the electrically small antenna, a tuning circuit electrically connected with the pre-amplification circuit, and a differential amplification circuit electrically connected with the tuning circuit. According to the receiving device, the electrically small antenna is used for receiving long-wave positioning navigation time service signals, miniaturization of a conventional very-low-frequency long-wave receiving electric antenna is achieved, the structure is simple, performance is reliable, mass production is facilitated, and the receiving device can serve as a standardized accessory of a long-wave receiver. And through the tuning function of the amplification circuit, the de |
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