ANTENNA SWITCH
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专利名称：ANTENNA SWITCH
发明人：SAKAI YUKIO,KOYAMA ICHIRO,SATO TAKESHI
申请号：JP13782490
申请日：19900528
公开号：JPH0435324A
公开日：
19920206
专利内容由知识产权出版社提供
摘要：PURPOSE:To prevent the degradation in the reception sensitivity due to the mixing of radiation from a transmission side circuit to a reception side circuit by arranging a low pass filter between a transmission side circuit on a board in an antenna switch so as to increase the distance between the transmission side circuit and the reception side circuit. CONSTITUTION:A low pass filter 6 is provided on a board 9 in an antenna switch, and the low pass filter 6 consists of a coil 6a being a narrow paper- tablet shaped meandering pattern and a chip capacitor. In this state, the transmission side circuit 2 is arranged to the left side of the low pass filter 6 and a reception side circuit 3 is arranged to the right side of the low pass filter 6. By such constitution, the transmission side circuit 2 and the reception side circuit 3 are parted depending on the arrangement of the low pass filter 6 and the distance between them is large, the mixing of radiation from the transmission side circuit 2 the reception side circuit 3 is not caused. Thus, the reception sensitivity is not lost and a stable level is obtained.
申请人：MATSUSHITA ELECTRIC IND CO LTD
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