-
公开(公告)号：US11277140B1
公开(公告)日：2022-03-15
申请号：US17340914
申请日：2021-06-07
Applicant: QUALCOMM Incorporated
Inventor： Dongmin Park , Alvin Siu-Chi Li , Masoud Moslehi Bajestan , Yiwu Tang
Abstract: In certain aspects, a sampler includes a sampling capacitor, a precharge switch coupled to the sampling capacitor, one or more discharge circuits coupled to the sampling capacitor, and a reference-voltage circuit coupled to the sampling capacitor. The reference-voltage circuit is configured to generate a reference voltage based on a supply voltage, and generate a voltage difference between a voltage on the sampling capacitor and the reference voltage.
-
公开(公告)号：US11595028B2
公开(公告)日：2023-02-28
申请号：US17362509
申请日：2021-06-29
Applicant: Qualcomm Incorporated
Inventor： Masoud Moslehi Bajestan , Marco Zanuso , Razak Hossain , Hasnain Lakdawala
Abstract: An apparatus can implement a frequency doubler with duty cycle correction in conjunction with, for instance, a phase-locked loop (PLL) to decrease phase noise. In an example aspect, an apparatus has a frequency doubler including a signal combiner, a first signal pathway, and a second signal pathway. The frequency doubler also includes a doubler input node and a doubler output node. The signal combiner is coupled to the doubler output node. The first signal pathway is coupled between the doubler input node and the signal combiner and includes a first adjustable delay cell. The second signal pathway is also coupled between the doubler input node and the signal combiner and includes a second adjustable delay cell.
-
公开(公告)号：US20210409007A1
公开(公告)日：2021-12-30
申请号：US17362509
申请日：2021-06-29
Applicant: Qualcomm Incorporated
Inventor： Masoud Moslehi Bajestan , Marco Zanuso , Razak Hossain , Hasnain Lakdawala
Abstract: An apparatus can implement a frequency doubler with duty cycle correction in conjunction with, for instance, a phase-locked loop (PLL) to decrease phase noise. In an example aspect, an apparatus has a frequency doubler including a signal combiner, a first signal pathway, and a second signal pathway. The frequency doubler also includes a doubler input node and a doubler output node. The signal combiner is coupled to the doubler output node. The first signal pathway is coupled between the doubler input node and the signal combiner and includes a first adjustable delay cell. The second signal pathway is also coupled between the doubler input node and the signal combiner and includes a second adjustable delay cell.
-
公开(公告)号：US20210409029A1
公开(公告)日：2021-12-30
申请号：US17357478
申请日：2021-06-24
Applicant: Qualcomm Incorporated
Inventor： Masoud Moslehi Bajestan , Marco Zanuso , Razak Hossain , Hasnain Lakdawala
Abstract: An apparatus implements a multiplying delay-locked loop (MDLL) including a sampler to be calibrated. In an example aspect, an apparatus includes an MDLL and a sampler calibrator. The MDLL includes a locked-loop feedforward path with a sampler, a control output, a feedback input, and a reference input coupled to a reference signal source. The MDLL also includes a VCO, a multiplexer, and a divider. The VCO includes a VCO input, a VCO output, and a control input coupled to the control output. The multiplexer includes a first input coupled to the reference signal source, a second input coupled to the VCO output, and an output coupled to the VCO input. The divider is coupled between the VCO output and the feedback input. The sampler calibrator includes a first input coupled to the reference signal source, a second input coupled to the VCO output, and an output coupled to the sampler.
-
公开(公告)号：US10381981B2
公开(公告)日：2019-08-13
申请号：US15706034
申请日：2017-09-15
Applicant: Qualcomm Incorporated
Inventor： Masoud Moslehi Bajestan , Mehran Mohammadi Izad , Mohammad Farazian
Abstract: The present disclosure describes aspects of degeneration for a wideband voltage-controlled oscillator (VCO) circuit. In some aspects, the VCO circuit includes a degeneration network that includes a first inductor, a second inductor, and a capacitor. The degeneration network is connected between the a supply voltage and ground, with the capacitor connected across the differential VCO, between the sources of cross-coupled PMOS transistors and the sources of cross-coupled NMOS transistors. Control circuitry selects an inductance value of a switched inductance network to select a frequency band in which the VCO circuit operates. The control circuitry also sets a switched capacitor bank and a variable capacitor bank to tune the VCO circuit to an operating frequency within the selected frequency band. The control circuitry further tunes the degeneration network to degenerate the VCO circuit to reduce phase noise in an output signal of the VCO circuit.
-
Patent Agency Ranking
公开(公告)号：US20190089304A1
公开(公告)日：2019-03-21
申请号：US15705855
申请日：2017-09-15
Applicant: Qualcomm Incorporated
Inventor： Masoud Moslehi Bajestan , Mehran Mohammadi Izad , Mohammad Farazian
Abstract: The present disclosure describes aspects of a switchable inductor network for wideband circuits. In some aspects, the switchable inductor network provides selectable inductance. The switchable inductor network includes a first coil and a second coil that includes a first inductive segment and a second inductive segment. Connection points of the second coil connect the second coil across a portion of the first coil. The switchable inductor network also includes a switch connected between the first inductive segment and the second inductive segment of the second coil. The switch is configured to change the selectable inductance of the switchable inductor network by selectively coupling the first inductive segment to the second inductive segment of the second coil in response to a control signal.
-
公开(公告)号：US12255663B2
公开(公告)日：2025-03-18
申请号：US18185325
申请日：2023-03-16
Applicant: QUALCOMM Incorporated
Inventor： Masoud Moslehi Bajestan , Arpit Gupta , Wu-Hsin Chen , Vinod Panikkath
Abstract: In certain aspects, a system includes a voltage-controlled oscillator (VCO), a phase detector configured to receive a reference signal, a frequency divider coupled between an output of the VCO and the phase detector, a phase-to-current circuit coupled to an output of the phase detector, and a temperature circuit configured to output a temperature-dependent voltage. The system also includes a switching circuit configured to selectively couple the phase-to-current circuit to an input of the VCO and configured to selectively couple the temperature circuit to the input of the VCO.
-
公开(公告)号：US11411567B2
公开(公告)日：2022-08-09
申请号：US17117240
申请日：2020-12-10
Applicant: QUALCOMM INCORPORATED
Inventor： Masoud Moslehi Bajestan , Giovanni Marucci , Dongmin Park , Marco Zanuso , Yiwu Tang
Abstract: A phase-locked loop (PLL) may include a phase-frequency detector (PFD), a phase interpolation (PI)-based sampler, a loop filter, a voltage-controlled oscillator (VCO), and a fractional frequency divider. The PFD output corresponds to a phase error between a reference clock signal and a feedback signal. The PI-based sampler produces a slope signal in response to the PFD output, and adjusts the slope signal in response to a quantization error correction indication. The PI-based sampler also samples the slope signal. The loop filter produces a VCO control signal in response to a sampled slope signal. The VCO control signal controls the VCO frequency. The fractional frequency divider circuit divides the frequency of the VCO output signal and also determines the quantization error correction corresponding to the quantization error introduced by fractional division of the frequency of the VCO output signal.
-
公开(公告)号：US10447204B2
公开(公告)日：2019-10-15
申请号：US15705855
申请日：2017-09-15
Applicant: Qualcomm Incorporated
Inventor： Masoud Moslehi Bajestan , Mehran Mohammadi Izad , Mohammad Farazian
Abstract: The present disclosure describes aspects of a switchable inductor network for wideband circuits. In some aspects, the switchable inductor network provides selectable inductance. The switchable inductor network includes a first coil and a second coil that includes a first inductive segment and a second inductive segment. Connection points of the second coil connect the second coil across a portion of the first coil. The switchable inductor network also includes a switch connected between the first inductive segment and the second inductive segment of the second coil. The switch is configured to change the selectable inductance of the switchable inductor network by selectively coupling the first inductive segment to the second inductive segment of the second coil in response to a control signal.
-
10.发明申请LOW POWER CURRENT RE-USING TRANSFORMER-BASED DUAL-BAND VOLTAGE CONTROLLED OSCILLATOR 有权低功耗电流重新使用基于变压器的双电压控制振荡器公开(公告)号：US20160373057A1
公开(公告)日：2016-12-22
申请号：US14745033
申请日：2015-06-19
Applicant: QUALCOMM Incorporated
Inventor： Mohammad Farazian , Masoud Moslehi Bajestan , Yiwu Tang , Jong Min Park , Sujiang Rong
IPC: H03B5/12
CPC classification number: H03B5/124 , H03B5/1212 , H03B5/1215 , H03B5/1256 , H03B5/1296 , H03B2200/0072 , H03L7/099
Abstract: A dual-band voltage controlled oscillator (VCO) includes: a first oscillator circuit including a first inductor; a second oscillator circuit including a second inductor; a first mode switch configured to electrically connect or disconnect a first output terminal of the first oscillator circuit and a first output terminal of the second oscillator circuit; a second mode switch configured to electrically connect or disconnect a second output terminal of the first oscillator circuit and a second output terminal of the second oscillator circuit; a third mode switch configured to electrically connect or disconnect a first terminal of the first inductor and a first terminal of the second inductor; and a fourth mode switch configured to electrically connect or disconnect a second terminal of the first inductor and a second terminal of the second inductor.
Abstract translation: 双频带压控振荡器（VCO）包括：第一振荡器电路，包括第一电感器; 包括第二电感器的第二振荡器电路; 第一模式开关，被配置为电连接或断开第一振荡电路的第一输出端和第二振荡电路的第一输出端; 第二模式开关，被配置为电连接或断开第一振荡电路的第二输出端和第二振荡电路的第二输出端; 第三模式开关，被配置为电连接或断开第一电感器的第一端子和第二电感器的第一端子; 以及第四模式开关，被配置为电连接或断开第一电感器的第二端子和第二电感器的第二端子。
-
-
-
-
-
-
-
-
-
Search Results
14
records
(took 0.013 seconds)
