Balanced Modulator

AD630 (Rev. G)

Balanced Modulator/Demodulator Data Sheet AD630 Rev. G Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use.

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RF Power Amplifier Design

~Balanced Amplifier Configuration Port 1 Z=50 Ohm Port 2 Z=50 Ohm. 21 Amplifier Design – Simulation ~Gate & Drain Waveforms 0 500 1000 1300 Time (ps) Drain waveforms-5 0 5 10 15 20 25 ... modulator RF output high efficiency power amplifier digital signal processor local oscillator supply voltage amplifier I Q I Q di gi ta l b a s e band i npu ...

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Digital Modulation

8 Binary Frequency -Shift Keying (BFSK) • Two binary digits represented by two different frequencies near the carrier frequency – where f 1 and f 2 are offset from carrier frequency f c by equal but opposite amounts – B = 2([f