Selective diversity receiver

Abstract

Abstract PURPOSE:To eliminate the deterioration of diversity effect by using a detector of the same level and a demodulator in two series in terms of time division. CONSTITUTION:A signal received by antennas 1, 2 is converted into the 2nd intermediate frequency signals A, B, the two signals are detected for the level in time division, compared by a comparator 17 and the result of comparison is inputted to a selection switch 18. On the other hand, an output of a sampling switch 200 is demodulated by the demodulator 106, separated into two systems of base band demodulation signals by a separating switch 107 and the result is inputted to the selection switch 18. The demodulation signal having a higher reception level is selected by the selection switch 18, restored into a smooth waveform by a low pass filter 19 and then outputted.

Inventors

• 👤 Takeshi Hattori
• 👤 武 服部
• 👤 Keisuke Suwa
• 👤 諏訪　敬祐

Bibliographic Details