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公开(公告)号：EP1665709A1
公开(公告)日：2006-06-07
申请号：EP04757606.1
申请日：2004-03-17
发明人： BALLANTYNE, Gary, J.
IPC分类号： H04L27/36
CPC分类号： H03C1/547 , H03F3/2176 , H04L27/362
摘要： A quadra-polar modulator that is simple to implement and also provides good noise performance. The quadra-polar modulator includes four amplitude modulators and a combiner. Each amplitude modulator modulates a respective carrier signal with a respective input signal to provide a respective output signal. The combiner then combines the four output signals from the four amplitude modulators to provide a modulated signal. Each amplitude modulator may be implemented with a switching amplifier, such as a supply modulated class E amplifier. Two input signals are obtained by summing separately an inphase (I) modulating signal and an inverted I modulating signal with an offset value. The other two input signals are obtained by summing separately a quadrature (Q) modulating signal and an inverted Q modulating signal with the offset value. The offset value can be selected based on the expected magnitude of the modulating signals. The four carrier signals are in quadrature to each other.
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公开(公告)号：EP1532729B1
公开(公告)日：2010-03-10
申请号：EP03749195.8
申请日：2003-08-28
发明人： BALLANTYNE, Gary, J.
IPC分类号： H03C3/09
CPC分类号： H03C3/0983 , H03C3/0933 , H03C3/0941 , H03C3/095 , H03C3/0966
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公开(公告)号：EP1532729A2
公开(公告)日：2005-05-25
申请号：EP03749195.8
申请日：2003-08-28
发明人： BALLANTYNE, Gary, J.
IPC分类号： H03C3/09
CPC分类号： H03C3/0983 , H03C3/0933 , H03C3/0941 , H03C3/095 , H03C3/0966
摘要： A communications system using a phase locked loop employing two-point modulation is disclosed. The phase locked loop further includes a master oscillator having an output operably coupled to a first input of the phase detector; a slave oscillator having an output operably coupled to a second input of the phase detector, and a forward-gain-adaptation module having a first input operably coupled to the raw-error terminal of the phase detector.
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公开(公告)号：EP1665709B1
公开(公告)日：2013-06-19
申请号：EP04757606.1
申请日：2004-03-17
发明人： BALLANTYNE, Gary, J.
CPC分类号： H03C1/547 , H03F3/2176 , H04L27/362
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公开(公告)号：EP1506652B1
公开(公告)日：2011-12-28
申请号：EP03734059.3
申请日：2003-05-15
发明人： BALLANTYNE, Gary, J.
CPC分类号： H04L27/0008 , H04L1/0003 , Y02D50/10
摘要： A dual modulation transmitter apparatus ( 100 ) includes first ( 134 ), second ( 136 ), and third ( 132 ) signal paths. The first signal path includes a polar modulator ( 120 ) coupled to a data input ( 115 ). The second signal path includes a quadrature modulator ( 122 ) coupled to the data input. The third signal path is coupled to an antenna ( 142 ) and includes a switch ( 128 ) configured to couple the third signal path to the first signal path under a first condition and to couple the third signal path to the second signal path under a second condition. Thus, the transmitter apparatus enjoys the best of both worlds, since it utilizes quadrature or polar modulation in the most appropriate circumstances.
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公开(公告)号：EP1506652A1
公开(公告)日：2005-02-16
申请号：EP03734059.3
申请日：2003-05-15
发明人： BALLANTYNE, Gary, J.
CPC分类号： H04L27/0008 , H04L1/0003 , Y02D50/10
摘要： A dual modulation transmitter apparatus ( 100 ) includes first ( 134 ), second ( 136 ), and third ( 132 ) signal paths. The first signal path includes a polar modulator ( 120 ) coupled to a data input ( 115 ). The second signal path includes a quadrature modulator ( 122 ) coupled to the data input. The third signal path is coupled to an antenna ( 142 ) and includes a switch ( 128 ) configured to couple the third signal path to the first signal path under a first condition and to couple the third signal path to the second signal path under a second condition. Thus, the transmitter apparatus enjoys the best of both worlds, since it utilizes quadrature or polar modulation in the most appropriate circumstances.
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