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Digital switching of mobile radio transmitter cavity resonators

机译:移动无线电发射机腔谐振器的数字切换

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The design of a digitally switched mobile radio transmitter cavity resonator operating at 909 MHz is presented. By using only two loop transitions between the cavity and two switchable TEM coaxial resonators mounted external to the cavity, a total of ten different frequencies has been selected over a bandwidth of 2.5 MHz. Cavity unloaded Q was optimised for a value greater than 13000 over the bandwidth. This was found to be sufficient for the intended applications. Switching speeds of 1.53 mu s and 0.8 mu s have been measured for the turn 'on' and turn 'off' transients, respectively. Measured and theoretical results show reasonable agreement.
机译:提出了工作在909 MHz的数字开关移动无线电发射机腔谐振器的设计。通过仅在空腔与安装在空腔外部的两个可切换TEM同轴谐振器之间使用两个环路过渡,就可以在2.5 MHz的带宽上选择总共十个不同的频率。空腔卸载Q在带宽上的值优化为大于13000。发现这对于预期的应用是足够的。对于“接通”和“关断”瞬态,分别测得的开关速度为1.53μs和0.8μs。测量和理论结果表明合理的一致性。

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