公开(公告)号：US20060030284A1

公开(公告)日：2006-02-09

申请号：US11190549

申请日：2005-07-27

申请人： Yoshihito Kitayama ,  Kunio Okada

发明人： Yoshihito Kitayama ,  Kunio Okada

IPC分类号： H04B17/02

CPC分类号： H03G3/3078 ,  H03G3/3068

摘要： In order to realize a demodulator circuit and a demodulation method of controlling the amplification degree of an AGC in order that the optimum C/N value near the best C/N value can be always secured in the whole AGC voltage region, the amplification degrees of AGC's 122 and 126 is controlled based on a change of the reception grade of a received signal having been outputted from a FFT 132 of a demodulator circuit unit 13 after being received by an antenna 11 and being amplified by a tuner unit 12. Consequently, the amplification degree can be immediately modified according to a change of the reception grade, and consequently the optimum reception grade can be secured always.

摘要翻译： 为了实现解调器电路和控制AGC的放大度的解调方法，以便在整个AGC电压区域中始终可以确保最佳C / N值附近的最佳C / N值，放大度 AGC 122和126基于在由天线11接收并由调谐器单元12放大之后从解调器电路单元13的FFT 132输出的接收信号的接收等级的变化来控制。因此， 可以根据接收等级的变化立即修改放大度，从而可以始终确保最佳的接收等级。

公开(公告)号：US20060166635A1

公开(公告)日：2006-07-27

申请号：US11293474

申请日：2005-12-01

申请人： Yoshihito Kitayama ,  Kunio Okada

发明人： Yoshihito Kitayama ,  Kunio Okada

IPC分类号： H04B1/06

CPC分类号： H04B7/0814 ,  H01Q19/005 ,  H04B1/18

摘要： The invention arranges an auxiliary antenna in the neighborhood of an antenna, and a voltage applied to the auxiliary antenna is changed based on the reception quality of a received signal received by the antenna. Thereby, the reception characteristic of the antenna is changed. Moreover, the optimum antenna is selected among a plurality of arranged antennas based on the reception quality of the received signals received by the plurality of arranged antennas.

公开(公告)号：US07546104B2

公开(公告)日：2009-06-09

申请号：US11293474

申请日：2005-12-01

申请人： Yoshihito Kitayama ,  Kunio Okada

发明人： Yoshihito Kitayama ,  Kunio Okada

IPC分类号： H04B1/06

CPC分类号： H04B7/0814 ,  H01Q19/005 ,  H04B1/18

摘要： The invention arranges an auxiliary antenna in the neighborhood of an antenna, and a voltage applied to the auxiliary antenna is changed based on the reception quality of a received signal received by the antenna. Thereby, the reception characteristic of the antenna is changed. Moreover, the optimum antenna is selected among a plurality of arranged antennas based on the reception quality of the received signals received by the plurality of arranged antennas.

摘要翻译： 本发明在天线附近布置辅助天线，并且基于由天线接收的接收信号的接收质量来改变施加到辅助天线的电压。 由此，改变天线的接收特性。 此外，基于由多个配置的天线接收的接收信号的接收质量，在多个排列的天线中选择最佳天线。