Title :
The Injection-Locked-Oscillator as a Microwave Amplifier of MSK Modulated Signals - Part II
Author :
Kumar, S. ; Chudobiak, W.J. ; Wight, J.S.
fDate :
April 30 1979-May 2 1979
Abstract :
Because of its phase continuous nature a Minimum-Shift-Keying (MSK) type of digitally modulated microwave signal may be amplified with an Injection-Locked-Oscillator Phase-Locked-Amplifier (ILO-PLA) Experimental bit-error-rate results for an ILO-PLA are presented in this paper for MSK modulated signals. The results show that for MSK signals an ILO-PLA does not display the large performance degradation previously reported for QPSK signals. Further a two sided locking bandwidth equal to 1.8 times the input signal bit-rate results in about .3 dB degradation in the bit-error-rate performance due to the ILO-PLA. A positive or negative frequency offset of about ten per cent of the locking bandwidth causes negligible further degradation of the performance.
Keywords :
Bandwidth; Continuous phase modulation; Degradation; Digital modulation; High power amplifiers; Microwave amplifiers; Oscillators; Phase modulation; Programmable logic arrays; Quadrature phase shift keying;
Conference_Titel :
Microwave Symposium Digest, 1979 IEEE MTT-S International
Conference_Location :
Orlando, FL, USA
DOI :
10.1109/MWSYM.1979.1124125
