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1. 发明授权

US08417200B1 Wideband power efficient high transmission power radio frequency (RF) transmitter 有权
公开(公告)号：US08417200B1
公开(公告)日：2013-04-09
申请号：US13249741
申请日：2011-09-30
申请人： Ray (Ramon) Gomez , Leonard Dauphinee , Massimo Brandolini , Jianhong Xiao , Dongsoo Koh , Young Shin , Chonghua Zhong , Rezaur Rahman Khan
发明人： Ray (Ramon) Gomez , Leonard Dauphinee , Massimo Brandolini , Jianhong Xiao , Dongsoo Koh , Young Shin , Chonghua Zhong , Rezaur Rahman Khan
IPC分类号： H04B1/04 , H03F3/04
CPC分类号： H04B1/0475 , H03M1/66
摘要： Embodiments provide transmitter topologies that improve the power efficiency and bandwidth of RF transmitters for high transmission power applications. In an embodiment, the common-emitter/source PA of conventional topologies is replaced with a current-input common-base/gate PA, which is stacked on top on an open-collector/drain current-output transmitter. The common-base/gate PA protects the output of the transmitter from large output voltage swings. The low input impedance of the common-base/gate PA makes the PA less susceptible to frequency roll-off, even in the presence of large parasitic capacitance produced by the transmitter. At the same time, the low input impedance of the common-base/gate PA reduces the voltage swing at the transmitter output and prevents the transmitter output from being compressed or modulated. In an embodiment, the DC output current of the transmitter is reused to bias the PA, which results in power savings compared to conventional transmitter topologies.

2. 发明申请

US20130084816A1 Wideband Power Efficient High Transmission Power Radio Frequency (RF) Transmitter 有权
标题翻译：宽带功率有效的高功率射频（RF）发射机
公开(公告)号：US20130084816A1
公开(公告)日：2013-04-04
申请号：US13249741
申请日：2011-09-30
申请人： Ray (Ramon) Gomez , Leonard Dauphinee , Massimo Brandolini , Jianhong Xiao , Dongsoo Koh , Young Shin , Chonghua Zhong , Rezaur Rahman Khan
发明人： Ray (Ramon) Gomez , Leonard Dauphinee , Massimo Brandolini , Jianhong Xiao , Dongsoo Koh , Young Shin , Chonghua Zhong , Rezaur Rahman Khan
IPC分类号： H04W88/02
CPC分类号： H04B1/0475 , H03M1/66
摘要： Embodiments provide transmitter topologies that improve the power efficiency and bandwidth of RF transmitters for high transmission power applications. In an embodiment, the common-emitter/source PA of conventional topologies is replaced with a current-input common-base/gate PA, which is stacked on top on an open-collector/drain current-output transmitter. The common-base/gate PA protects the output of the transmitter from large output voltage swings. The low input impedance of the common-base/gate PA makes the PA less susceptible to frequency roll-off, even in the presence of large parasitic capacitance produced by the transmitter. At the same time, the low input impedance of the common-base/gate PA reduces the voltage swing at the transmitter output and prevents the transmitter output from being compressed or modulated. In an embodiment, the DC output current of the transmitter is reused to bias the PA, which results in power savings compared to conventional transmitter topologies.
摘要翻译：实施例提供了发射机拓扑，其提高用于高传输功率应用的RF发射机的功率效率和带宽。在一个实施例中，常规拓扑的共发射极/源极PA被置于集电极/漏极电流输出发射器顶部堆叠的电流输入公共基极/栅极PA替代。公共端/门PA保护发射机的输出免受大的输出电压摆幅。公共基极/门极PA的低输入阻抗使得即使在发射机产生大的寄生电容的情况下，PA也不易于频率滚降。同时，公共基极/门极PA的低输入阻抗降低了发射机输出端的电压摆幅，并防止发射机输出被压缩或调制。在一个实施例中，与常规发射机拓扑相比，发射机的DC输出电流被重新用于偏置PA，这导致功率节省。

3. 发明授权

US07542741B2 System and method for power mapping to compensate for power amplifier gain control variations 有权
标题翻译：用于功率映射的系统和方法，以补偿功率放大器增益控制变化
公开(公告)号：US07542741B2
公开(公告)日：2009-06-02
申请号：US11343442
申请日：2006-01-31
申请人： Dmitriy Rozenblit , Tirdad Sowlati , Dongsoo Koh
发明人： Dmitriy Rozenblit , Tirdad Sowlati , Dongsoo Koh
IPC分类号： H04B1/04
CPC分类号： H03G3/3042
摘要： A system for compensating gain control variations in a power amplifier comprises a power control element configured to receive a power control signal and an instantaneous envelope power reference signal, an adder configured to combine the power control signal and the instantaneous envelope power reference signal to obtain a modified power level signal, and a mapping function configured to receive the modified power level signal and configured to alter a control input to a variable gain amplifier, the variable gain amplifier controlling an adjustable input to the power amplifier.
摘要翻译：用于补偿功率放大器中的增益控制变化的系统包括被配置为接收功率控制信号和瞬时包络功率参考信号的功率控制元件，被配置为组合功率控制信号和瞬时包络功率参考信号以获得修改的功率电平信号，以及映射功能，被配置为接收修改的功率电平信号并且被配置为改变对可变增益放大器的控制输入，所述可变增益放大器控制到功率放大器的可调输入。

4. 发明授权

US06927637B1 Efficient tuning circuit for on-chip voltage controlled oscillator and method 有权
标题翻译：片上压控振荡器的高效调谐电路及方法
公开(公告)号：US06927637B1
公开(公告)日：2005-08-09
申请号：US10600908
申请日：2003-06-21
申请人： Dongsoo Koh , Peter Good
发明人： Dongsoo Koh , Peter Good
IPC分类号： H03L7/095 , H03L7/099 , H03L7/10
CPC分类号： H03L7/10 , H03L7/095 , H03L7/099 , Y10S331/02
摘要： An exemplary tuning circuit is coupled to, a voltage controlled oscillator. The tuning circuit comprises a lock detect monitoring circuit, a VTUNE monitoring circuit and an autotuner circuit. The lock detect monitoring circuit is coupled to a phase locked loop of the voltage controlled oscillator and is configured to determine a state of the phase locked loop. The VTUNE monitoring circuit is coupled to a loop filter of the voltage controlled oscillator and is configured to determine the fine tuning voltage generated by the loop filter. The autotuner circuit is connected to the lock detect monitoring circuit and the VTUNE monitoring circuit and is configured to provide coarse tuning of the voltage controlled oscillator based on the fine tuning voltage and the state of the phase locked loop.
摘要翻译：示例性调谐电路耦合到压控振荡器。调谐电路包括锁定检测监视电路，VTUNE监控电路和自动调谐电路。锁定检测监控电路耦合到压控振荡器的锁相环，并被配置为确定锁相环的状态。 VTUNE监控电路耦合到压控振荡器的环路滤波器，并被配置为确定环路滤波器产生的微调电压。自动调谐电路连接到锁定检测监控电路和VTUNE监控电路，并配置为基于微调电压和锁相环的状态对压控振荡器进行粗调。

5. 发明申请

US20070207749A1 System and method for power mapping to compensate for power amplifier gain control variations 有权
标题翻译：用于功率映射的系统和方法，以补偿功率放大器增益控制变化
公开(公告)号：US20070207749A1
公开(公告)日：2007-09-06
申请号：US11343442
申请日：2006-01-31
申请人： Dmitriy Rozenblit , Tirdad Sowlati , Dongsoo Koh
发明人： Dmitriy Rozenblit , Tirdad Sowlati , Dongsoo Koh
IPC分类号： H01Q11/12
CPC分类号： H03G3/3042
摘要： A system for compensating gain control variations in a power amplifier comprises a power control element configured to receive a power control signal and an instantaneous envelope power reference signal, an adder configured to combine the power control signal and the instantaneous envelope power reference signal to obtain a modified power level signal, and a mapping function configured to receive the modified power level signal and configured to alter a control input to a variable gain amplifier, the variable gain amplifier controlling an adjustable input to the power amplifier.
摘要翻译：用于补偿功率放大器中的增益控制变化的系统包括被配置为接收功率控制信号和瞬时包络功率参考信号的功率控制元件，被配置为组合功率控制信号和瞬时包络功率参考信号以获得修改的功率电平信号，以及映射功能，被配置为接收修改的功率电平信号并且被配置为改变对可变增益放大器的控制输入，所述可变增益放大器控制到功率放大器的可调输入。

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