| Summary: | 碩士 === 國立中央大學 === 電機工程學系 === 86 === We study microwave signal source in this thesis which
contains two major sessions One is carrier signal and the
other is modulation signal.First, we design a 2.4 GHz VCO
circuit, then implements it into real circuit. With extensive
measurement of that, we discuss two different types of
resonators that are made of micro-strip line and coaxial
resonator respectively in our VCO circuits. For applications of
wirelesscommunication, we design and fabricate 2.4 GHz frequency
synthesizer module with PLL and VCO. Moreover, we discuss the
effect of output signal produced by these parameters of phase
lock loop. In higher frequency signal source which uses the
multiplier to complete this task, we apply P-3000 foundry
provided by Hexwave Inc. to design a 7.2 GHz multiplierwith its
operation frequency bandwidth above 500 MHz. In modulation
signal source, our research focuses on digital modulator that
contains three different modulators implemented by changing the
phase, amplitude and frequency of the carrier directly. These
three modulators are FSK, BPSK and IQ modulator whose operation
frequencies are 2.4 GHz and modulation bandwidths are wide-band.
Besides that, we use SSB(Single Side Band) measurement and
Demodulation measurement to analyze the characteristics of the
modulators that we*ve fabricated. h contains two
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