Group delay equalization of radio frequency signals by piecewise equalization in a lower frequency band
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Intermodulation correction for combined analog- and digital-format rf transmitters
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Arrangement for using at least one auxiliary antenna to provide different radiation patterns to adjacent-channel ntsc and dtv television signals transmitted from a common main antenna.
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Cross-channel intermodulation distortion correction device for adjacent-channel ntsc/dtv television broadcast transmitters
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Common high-power amplification of adjacent-channel signals
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Envelope detector including sample-and-hold circuit controlled by preceding carrier pulse peak(s)
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Amplification apparatus and method including modulator component
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Quadrature amplitude modulator including a digital amplitude modulator as a component thereof
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RF amplifier providing reduced drive response rise times and fall times
