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公开(公告)号：US11699974B1
公开(公告)日：2023-07-11
申请号：US17853064
申请日：2022-06-29
发明人： Mohamed M. Elkholy , Mustafa Koroglu , Wenhuan Yu
摘要： A frequency synthesizer on an integrated circuit provides a local oscillator (LO) signal for RF operations and also functions as an injection clock signal source during crystal oscillator startup. The integrated circuit goes into a sleep mode in which the crystal oscillator is off and responsive to a wakeup event the crystal oscillator starts up again using the injection clock signal sourced from the frequency synthesizer. Parameters that cause the injection clock signal to match the crystal oscillator frequency are stored. The frequency synthesizer includes a phase-locked loop having an LC oscillator. A digital to analog converter controls the LC oscillator during injection. During an initial power up of the integrated circuit, a PLL in the frequency synthesizer locks to the crystal oscillator frequency to determine the parameters to store for injection.
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公开(公告)号：US11190147B1
公开(公告)日：2021-11-30
申请号：US16904821
申请日：2020-06-18
发明人： Mustafa Koroglu , Luigi Panseri , Yu Su , Vitor Pereira
摘要： In one embodiment, an apparatus includes: a digital baseband circuit to receive a digital baseband signal and output a first digital baseband signal and a second digital baseband signal, the second digital baseband signal comprising a scaled version of the first digital baseband signal; a first transmitter signal path coupled to the digital baseband circuit to process the first digital baseband signal and output a first radio frequency (RF) signal; a second transmitter signal path coupled to the digital baseband circuit to process the second digital baseband signal and output a second RF signal; a first power amplifier coupled to the first transmitter signal path to amplify the first RF signal and output an amplified first RF signal; and a second power amplifier coupled to the second transmitter signal path to amplify the second RF signal and output an amplified second RF signal.
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公开(公告)号：US20170110792A1
公开(公告)日：2017-04-20
申请号：US15390434
申请日：2016-12-23
摘要： An apparatus includes a first integrated circuit (IC) that includes a first radio-frequency (RF) circuit to process RF signals, a first antenna port to couple to one or more antennas, and a first switch integrated in the first IC and coupled to the first antenna port. The apparatus further includes a second IC that includes a second RF circuit to process RF signals, a second antenna port to couple to the one or more antennas, and a second switch integrated in the second IC and coupled to the second antenna port.
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公开(公告)号：US20240106398A1
公开(公告)日：2024-03-28
申请号：US17955171
申请日：2022-09-28
发明人： Rangakrishnan Srinivasan , Sriharsha Vasadi , Mustafa Koroglu , Zhongda Wang , Euisoo Yoo , Eddy Bell
CPC分类号： H03F3/245 , H04B1/0475 , H03F2200/451
摘要： In one aspect, an apparatus comprises: a driver circuit to receive first and second ramp signals and output first and second drive signals under control of a first bias signal and a second bias signal, the first bias signal having a first edge and a second edge, the second edge having a different edge rate than the first edge, the second bias signal having a third edge and a fourth edge, the third edge having a different edge rate than the fourth edge; and an output circuit coupled to the driver circuit, the output circuit comprising at least one first active device to be driven by the first drive signal and at least one second active device to be driven by the second drive signal, where the output circuit is to amplify and output a radio frequency (RF) signal.
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公开(公告)号：US11316482B2
公开(公告)日：2022-04-26
申请号：US16904811
申请日：2020-06-18
摘要： In an embodiment, an apparatus includes: a modulator to modulate a first signal; a distortion circuit coupled to the modulator to digitally pre-distort the first signal to compensate for a distortion of an amplifier; a distortion characterization circuit coupled to the distortion circuit to determine the distortion of the amplifier and configure the distortion circuit based on the determined distortion; a mixer coupled to the distortion circuit to upconvert the pre-distorted first signal to a pre-distorted radio frequency (RF) signal; and the amplifier coupled to the mixer to amplify the pre-distorted RF signal and output an amplified RF signal.
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公开(公告)号：US10110177B1
公开(公告)日：2018-10-23
申请号：US15662375
申请日：2017-07-28
发明人： Mustafa Koroglu
摘要： In one aspect, an apparatus includes: a first power amplifier to receive a first voltage signal and to output a first current; a second power amplifier to receive a second voltage signal and to output a second current; and a transformer coupled to the first power amplifier and the second power amplifier. The transformer may have multiple differential input ports to realize a controllable impedance based on a desired output power level.
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公开(公告)号：US10033421B2
公开(公告)日：2018-07-24
申请号：US15168318
申请日：2016-05-31
发明人： Vitor Pereira , Mustafa Koroglu , Ruifeng Sun , Ramin Khoini-Poorfard , Abdulkerim Coban , Yu Su , Krishna Pentakota
摘要： In one example, a semiconductor die includes multi-standard, multi-channel expandable television/satellite receiver that can be flexibly implemented in a number of different configurations to enable incorporation into a plurality of different systems. The semiconductor die may include multiple tuners to receive and tune a terrestrial radio frequency (RF) signal and a satellite RF signal. These tuners may include different frequency synthesizers including voltage controlled oscillators (VCOs) to generate VCO signals at different frequencies, mixers to downconvert the RF signals to baseband signals using the VCO signals. In an implementation, the semiconductor die may further include shared circuitry coupled to the tuners to digitize, process and demodulate the baseband signals.
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公开(公告)号：US20170093032A1
公开(公告)日：2017-03-30
申请号：US14869916
申请日：2015-09-29
CPC分类号： H01Q1/50 , H04B1/18 , H04B7/02 , H04B7/0805
摘要： An apparatus includes an integrated circuit (IC), which includes a radio-frequency (RF) circuit to process RF signals, and a balun that has first and second ports. First and second switches are coupled to the second port of the balun. The first port of the balun is coupled to the RF circuit.
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