Harmonic generation in TR discharges

With increasing use of higher-sensitivity detection for both radar and communications applications, there exists an increasing need for reduction in intersystem interference and the control of spurious-signal generation. Normally the duplexer is not considered a contributing source to spurious radiation; however, there has been found evidence of increased spurious-signal generation resulting from installation of duplexers in some systems. The spurious signals appear generally as harmonics of the transmitted frequency.