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The CE101 Test of the Army Aircraft's UHF Band Transceiver

육군 항공기류 UHF 대역 송수신기 CE101 시험

  • Received : 2015.10.08
  • Accepted : 2015.11.19
  • Published : 2015.11.30

Abstract

In case of UHF Band Transceiver for Army Aircraft, it shall follow MIL-STD-461F Figure CE101-4 most key design points for this equipment were to minize the current consumption and frequency interference since it will be integrated on aircraft. However, after design, abnomal signal(over 100 dBuA) was occured from 30 Hz to 1 kHz on CE101 test. Occured abnomal signal was measured as 50 Hz signal which was tansceiver $T_{DD}$ signal with the output power of 10 W and 20 ms periods. To meet the specification, current variation needed to be minized. Thus, $I_{dq}$ and $I_d$ of power amplifier were modified almost equally through test result and finally, the equipment was designed and developed with no difference of current consumption and frequency interference from the previous design goal.

육군 항공기류의 UHF 대역 송수신기는 규격인 MIL-STD-461F Figure CE101-4를 만족해야 한다. 항공기에 장착되는 장비이므로, 소모전력 최소화 및 주파수 간섭 최소화에 중점을 두고 장비를 설계하였다. 장비 설계 후 CE101 시험을 진행하면서 문제가 발생되었던 부분은 30 Hz에서 1 kHz에서 100 dBuA 규격 이상의 신호가 발생하였고, 발생된 신호는 송수신기에서 방사되는 10 W, 20 ms 단위의 $T_{DD}$ 50 Hz 신호로 분석되었다. 규격 만족을 위해 전류변화량을 줄여야 한다는 시험 결과를 토대로 출력증폭기의 $I_{dq}$$I_d$ 값을 유사하게 수정하였고, 기존 설계의 소모 전력과 주파수 간섭과 크게 차이가 없게 설계 및 제작하였다.

Keywords

References

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