他们指出，任何有头脑的外星文明都不会发射电磁波谱中的光子——无论是可见光波段还是射频波段——向另一个太阳系传送信息。
They suggest that any alien civilisation worth its salt would alight not on the photons of the electromagnetic spectrum-whether optical or radio-frequency-to send messages to other solar systems.
介绍了一种米波段直接射频采样数字接收机，并通过一个数字接收机的实例说明它的具体设计和实现方式。
Metre wave band direct RF sampling digital receiver is introduced in this paper. Main design and implement method is explained by an example of digital receiver.
介绍了一种应用于C波段接收机射频前端，并利用耦合微带线设计的射频滤波器。
An RF fitter, which is applied to C-band receiver RF front and designed with the coupling micros - trip line, is introduced.
在一个例示的实施例中，多波段天线系统100被调谐为在两个通常的射频范围内操作，这两个通常的射频范围通常称作低波段及高波段。
In one exemplary embodiment, the multi-band antenna system 100 is tuned to operate within two general radio frequency ranges which are generally referred to as a low band and a high band.
该RADIONOVAM10478射频天线模块是为L1波段GPS和辅助GPS系统相同的模块上的射频和天线结合了超小型单封装。
The RADIONOVA M10478 RF Antenna Module is an ultra-compact single package that combines the RF and antenna on the same module for both L1-band GPS and Assisted-GPS systems.
该RADIONOVAM10478射频天线模块是为L1波段GPS和辅助GPS系统相同的模块上的射频和天线结合了超小型单封装。
The RADIONOVA M10478 RF Antenna Module is an ultra-compact single package that combines the RF and antenna on the same module for both L1-band GPS and Assisted-GPS systems.
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