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STRIP_LINE_OSCILLATOR

2016-08-18 12:44  
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STRIP_LINE_OSCILLATOR
The figure shows a prototype strip tine oscillator that is capable of providing an operating range of 3.5:1 before oscillation ceases Length A∶40 mm,width B∶2 mm,width C:1 mm To change the frequency range,alter the length A and the length of the output coupling wire Typical frequencies with C=0 pF are about 145 MHz;with 27 pF, about 80 MHz; with 56 pF, about 60 MHz;and with 150 pF, about 36 MHz (plate-ceramic capacitors). With 1/16-inch double-sided PC board, note that the bottom ground plane covers the whole of the board. The output is about 0 dBm. The U310 FET is pushed through from the bottom side of the PC board until it touches the ground plane and is soldered directly to the ground plane.