Trial production result of MCF adopted narrow band radio transceiver module

In this paper, the test result of prototype of leadless 300MHz band Monolithic Crystal Filter (hereinafter as “MCF”) with 3 rd overtone and with 2poles is shown. And the measuring result and field-test result of appropriate radio module with small transmitting power in which MCF is integrated, are shown. As the result, radio module in which UHF band MCF is integrated is proved to have higher utility, generally, than those in which SAW is integrated.