In addition, the stop-band rejection can be further increased by using elliptic filter function which has limited frequency transmission zeros.

另外，在函数类型上使用椭圆函数型，使带外出现有限频率传输零点，进一步提高了带外抑制能力。

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Analyzed and studied the influence to the radio frequency transmission performance of PCB board line as right angle line, the different line, Snake-shaped line and so on ;

分析研究了直角走线、差分走线、蛇形线等PCB板电路走线对射频传输性能的影响；

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Analyzed and studied the parasitic capacity and the inductance effect which the hole produces, Analyzed the influence of PCB board hole to the radio frequency transmission performance;

分析了过孔产生的寄生电容和电感效应，PCB板过孔对射频传输性能的影响；

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The H9080 functions via a reliable 5GHz wireless transmission frequency to ensure the headphone reaches 6Mbps wireless bandwidth and up to 10m high-quality audio transmission.

ENGADGET: Rapoo H9080 wireless headphones promise mellow bass, 10 hour battery life

By changing the frequency of a radio transmission many times a second, causing it to leap around in an apparently random fashion, a radio signal could be made almost impossible to intercept.

ECONOMIST: Player-piano pioneer

While the device uses the same radio frequency band as the upcoming personal area networking technology Bluetooth, it uses a different transmission protocol.

CNN: Technology - Alcatel personalizes vibrating phone alerts