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1. 发明授权

US11942689B2 RADAR antenna system and method 有权
公开(公告)号：US11942689B2
公开(公告)日：2024-03-26
申请号：US17058382
申请日：2019-05-24
申请人： Nanowave Technologies Inc.
发明人： Justin Miller , Charles William Tremlett Nicholls , Keegan Pitre
IPC分类号： H01Q21/28 , G01S7/00 , G01S7/03 , G01S13/10 , G01S13/72 , H01Q3/08 , H01Q21/06 , G01S7/28
CPC分类号： H01Q21/064 , G01S7/006 , G01S7/032 , G01S13/10 , G01S13/726 , H01Q3/08 , H01Q21/28 , G01S7/28
摘要： A RADAR antenna system and method are provided. In an implementation, the system includes a base and first and second antennas configured to transmit independent first and second antenna beams, respectively. The first and second antennas are each coupled to the base so as to provide a common rotational axis for the first and second antennas. An antenna position controller is configured to independently control first and second transmission positions associated with the first and second antennas, respectively. Two different antenna technologies can be used, for example one for providing communications capability and the other for providing tracking capability. Other implementations include four or more antennas configured to transmit beams at similar or different frequencies. Improvements in scan rate proportional to the number of antennas are achieved compared to that achievable with a single beam, without an increase in the rotation rate of the antenna system.

2. 发明授权

US10031167B2 Frequency determination circuit and method 有权
公开(公告)号：US10031167B2
公开(公告)日：2018-07-24
申请号：US14063651
申请日：2013-10-25
申请人： NANOWAVE TECHNOLOGIES INC.
发明人： Charles William Tremlett Nicholls , Walid Hamdane
IPC分类号： G01R23/02 , H03L7/095 , H03L7/08 , H03L7/06 , H03L7/183
摘要： Circuits and methods for identifying or verifying frequencies are disclosed herein. A frequency verification circuit comprises: an input port for receiving an input signal; a phase frequency difference detector for determining a difference in phase and frequency between the input signal and a feedback signal and for providing a control signal based on the detected difference; a voltage controlled crystal oscillator for producing an output signal based on the control signal; and a feedback loop including a feedback divider for frequency dividing the output signal by a factor R to produce the feedback signal, the feedback divider being programmable to a plurality of values of the factor R to correspond to a plurality of different test frequencies.

3. 发明授权

US11757438B2 Transposed delay line oscillator and method 有权
公开(公告)号：US11757438B2
公开(公告)日：2023-09-12
申请号：US17634590
申请日：2020-08-13
申请人： Nanowave Technologies Inc.
发明人： Charles William Tremlett Nicholls
IPC分类号： H03K5/1252 , H03D7/00 , H03K5/14 , H03D7/16 , H03D7/18 , H03B21/00 , H03B19/00 , H03B17/00
CPC分类号： H03K5/1252 , H03B19/00 , H03B21/00 , H03D7/00 , H03D7/161 , H03D7/18 , H03K5/14 , H03B17/00
摘要： A transposed delay line oscillator including a mode selection filter and a transposed delay line is provided. An output of the transposed delay line is coupled to an input of the mode selection filter to establish an oscillator loop. Based on the transposed delay line output, the mode selection filter generates a mode selection signal including an isolated oscillatory mode, in a Radio Frequency (RF) band. The transposed delay line receives the mode selection signal for transposition to an intermediate frequency of an intermediate frequency (IF) delay line. The IF delay line includes a delay filter and a phase noise suppression loop configured to suppress de-correlated transposition phase noise resulting from a delay of the delay filter. Suppression of phase noise in the IF delay line enables cancellation of transposition phase noise when transposing the IF delay line output to the RF band.

4. 发明授权

US11652445B2 High stability optoelectronic oscillator and method 有权
公开(公告)号：US11652445B2
公开(公告)日：2023-05-16
申请号：US17634602
申请日：2020-08-13
申请人： Nanowave Technologies Inc.
发明人： Trevor James Hall , Charles William Tremlett Nicholls , Boris Spokoinyi , Mehedi Hasan
IPC分类号： H03B17/00 , H03L7/081 , H03L7/087 , H04B10/50 , H03L7/00
CPC分类号： H03B17/00 , H03L7/00 , H03L7/081 , H03L7/087 , H03L7/0816 , H04B10/50 , H03B2200/0044
摘要： An optoelectronic oscillator (OEO) including a drift compensation circuit is provided. The OEO includes a set of optical domain components communicatively coupled with a set of RF domain components. The RF domain components include a mode selection filter, a phase locked loop (PLL) and a drift compensation circuit communicatively coupled between the mode selection filter and the PLL. The mode selection filter provides a mode selection result to the drift compensation circuit. The drift compensation circuit phase modulates the mode selection result in a vector based coordinate system to maintain a drift compensated mode selection result within a locking bandwidth of the PLL, and to minimize phase shifting from accumulating phase drift. The PLL detects a phase difference between the drift compensated mode selection result and a reference signal, for use in maintaining the PLL in a phase lock with the reference signal, in particular over wide operational temperature ranges.

5. 发明授权

US11977144B2 System and method for improved radar sensitivity 有权
公开(公告)号：US11977144B2
公开(公告)日：2024-05-07
申请号：US17058421
申请日：2019-05-24
申请人： Nanowave Technologies Inc.
发明人： Charles William Tremlett Nicholls , Justin Miller , Keegan Pitre
IPC分类号： G01S13/30 , G01S7/02 , G01S7/282
CPC分类号： G01S13/30 , G01S7/025 , G01S7/282
摘要： A solid state RADAR antenna system is provided comprising at least one antenna configured to transmit a plurality of antenna beams. Each antenna beam is decoupled from each of the other plurality of antenna beams for transmitting in a blind range of a different antenna beam. Accordingly, in an implementation, the second antenna beam is transmitted so as to scan a first blind range associated with the first antenna beam. Decoupling antenna beams can be achieved using one or more of physical decoupling using different antennas, frequency decoupling using different bands and/or frequency multiplexing, or orthogonal polarization.

6. 发明授权

US09647672B2 Digitally compensated phase locked oscillator 有权
公开(公告)号：US09647672B2
公开(公告)日：2017-05-09
申请号：US15038891
申请日：2013-11-25
申请人： NANOWAVE TECHNOLOGIES INC.
发明人： Charles William Tremlett Nicholls , Walid Hamdane
IPC分类号： H03L7/085 , H03L7/099 , H03L1/02 , H03L7/16
CPC分类号： H03L7/0991 , H03L1/026 , H03L7/16
摘要： A digitally compensated phase locked oscillator (DCPLO) is disclosed herein. The DCPLO comprises: a DCPLO input for receiving a reference signal at a known frequency; a DCPLO output for outputting a signal at a desired frequency; a phased locked loop (PLL), the phased locked loop comprising: a phase frequency detector, an oscillator, and a PLL output coupled to the output; a first direct digital synthesizer (DDS), the first DDS having an output coupled to the PLL to supply a DDS signal to the PLL for adjusting the frequency within the PLL so as to maintain phase lock over the operating temperature; a temperature sensor; and a processor coupled to the first DDS, the phase frequency detector, and the temperature sensor, the processor configured to set the frequency of the first DDS according to a temperature sensed by the temperature sensor.

7. 发明授权

US11892561B2 Antenna ice loading sensor and method 有权
公开(公告)号：US11892561B2
公开(公告)日：2024-02-06
申请号：US17633830
申请日：2020-08-10
申请人： Nanowave Technologies Inc.
发明人： Justin Dinsdale Miller , Charles William Tremlett Nicholls
IPC分类号： G01S7/40 , G01B15/02 , H01Q13/20
CPC分类号： G01S7/4039 , G01B15/025 , H01Q13/20
摘要： Disclosed herein is a system and method for determining a thickness of ice on Radio Frequency (RF) systems The system includes a sensor unit for use in determining the thickness of ice on a surface of a RADAR system having a RADAR antenna, the sensor unit including a sensor unit antenna tunable to a harmonic of a RADAR antenna signal, the harmonic having a frequency within an ice absorption band, wherein the sensor unit antenna emits the harmonic at a first signal strength; and, a sensor unit receiver communicatively coupled to the sensor unit antenna and configured to detect a second signal strength of the harmonic received by the sensor unit antenna.

8. 发明授权

US11791810B2 Transposed delay line oscillator and method 有权
公开(公告)号：US11791810B2
公开(公告)日：2023-10-17
申请号：US17634590
申请日：2020-08-13
申请人： Nanowave Technologies Inc.
发明人： Charles William Tremlett Nicholls
IPC分类号： H03K5/1252 , H03D7/00 , H03K5/14 , H03D7/16 , H03D7/18 , H03B21/00 , H03B19/00 , H03B17/00
CPC分类号： H03K5/1252 , H03B19/00 , H03B21/00 , H03D7/00 , H03D7/161 , H03D7/18 , H03K5/14 , H03B17/00
摘要： A transposed delay line oscillator including a mode selection filter and a transposed delay line is provided. An output of the transposed delay line is coupled to an input of the mode selection filter to establish an oscillator loop. Based on the transposed delay line output, the mode selection filter generates a mode selection signal including an isolated oscillatory mode, in a Radio Frequency (RF) band. The transposed delay line receives the mode selection signal for transposition to an intermediate frequency of an intermediate frequency (IF) delay line. The IF delay line includes a delay filter and a phase noise suppression loop configured to suppress de-correlated transposition phase noise resulting from a delay of the delay filter. Suppression of phase noise in the IF delay line enables cancellation of transposition phase noise when transposing the IF delay line output to the RF band.

9. 发明授权

US10454421B2 Optoelectronic oscillator with tunable filter 有权
公开(公告)号：US10454421B2
公开(公告)日：2019-10-22
申请号：US15752797
申请日：2016-08-19
申请人： NANOWAVE TECHNOLOGIES INC.
发明人： Charles William Tremlett Nicholls
IPC分类号： H03B5/00 , H03B17/00 , G02F2/02 , G02F1/225 , H03H9/64 , H03J3/28 , G01S7/292 , G01S13/524 , G02F1/21 , H01P7/06 , H01P7/10
摘要： An optoelectronic oscillator (OEO) is disclosed comprising an electronically tunable filter for transposing narrow pass band characteristics of a surface acoustic wave (SAW) filter to a microwave frequency to provide mode selection in the OEO. An OEO is disclosed comprising a set of optical domain components, a downconverter in communication with an output of the optical domain components, and a set of radio frequency (RF) domain components in communication with an output of the downconverter. The set of RF domain components comprises a tunable filter operating at a filter center frequency and having an output coupled to the set of optical domain components for communicating a mode selection result. The tunable filter including a tuner; and a sub-filter. The sub-filter operating at a fixed center frequency to provide mode selection and adjacent mode suppression with respect to the tunable filter center frequency. The sub-filter center frequency being lower than the tunable filter center frequency, and a ratio of the tunable filter center frequency to a bandwidth of the sub-filter being at least 1000:1.

10. 发明授权

US09509322B2 Low spurious synthesizer circuit and method 有权
标题翻译：低杂散合成器电路及方法
公开(公告)号：US09509322B2
公开(公告)日：2016-11-29
申请号：US14647949
申请日：2012-11-29
申请人： NANOWAVE TECHNOLOGIES INC.
发明人： Walid Hamdane , Charles William Tremlett Nicholls
IPC分类号： H03B21/00 , H03L7/08 , H03L7/085 , H03L7/099 , H03L7/18 , H03L7/185 , H03L7/23
CPC分类号： H03L7/085 , H03L7/099 , H03L7/18 , H03L7/185 , H03L7/23
摘要： An offset phase locked loop synthesizer comprising: an input; an output; a voltage controlled oscillator (VCO), the VCO output coupled to the synthesizer output; a phase frequency detector having a reference input, a feed-back input, and an output; a mixer having a first mixer input coupled to the synthesizer input and a second mixer input coupled to the VCO output; a first divider for frequency dividing a signal by a first value and having an input coupled to the mixer output and an output coupled to the second input of the phase frequency detector; a second divider for frequency dividing a signal by a second value and having an input coupled to the synthesizer input and an output coupled to the reference input of the phase frequency detector; and a low pass filter coupled between the output of the phase frequency detector and the VCO input.
摘要翻译：一种偏移锁相环合成器，包括：输入; 输出压控振荡器（VCO），VCO输出耦合到合成器输出; 具有参考输入，反馈输入和输出的相位频率检测器; 具有耦合到所述合成器输入的第一混频器输入和耦合到所述VCO输出的第二混频器输入的混频器; 第一分频器，用于将信号分频第一值并具有耦合到混频器输出的输入和耦合到相位频率检测器的第二输入的输出; 第二分频器，用于将信号分频第二值并具有耦合到合成器输入的输入和耦合到相位频率检测器的参考输入的输出; 以及耦合在相位频率检测器的输出端和VCO输入端之间的低通滤波器。

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