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公开(公告)号：US11545758B2
公开(公告)日：2023-01-03
申请号：US17197612
申请日：2021-03-10
摘要： A frequency selective surface (FSS) having periodicity between one eighth and one quarter of an operational wavelength of the FSS and a low profile. The FSS has multiple pattern elements which are used to produce multiple transmission poles, and in some embodiments multiple transmission zeros. The transmission poles and transmission zeros are in the Ka and Ku bands, making the FSS applicable to 5G application. The transmission poles and transmission zeros also have high angular stability an oblique incident angle as high as 60°, as well as polarization insensitivity.
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公开(公告)号：US20210167578A1
公开(公告)日：2021-06-03
申请号：US17261950
申请日：2019-07-24
摘要： A tunable multi-mode laser is configured to generate a multi-mode optical signal at a tuned wavelength. The laser includes a semiconductor optical gain region, a feedback region, and a phase modulation region between the gain and feedback regions. Each of the regions may be monolithically integrated. A feedback loop is coupled to the tunable laser to receive the optical signal and includes at least one delay line. The delay line may also be monolithically integrated. An output of the delay line is fed back to the tunable multi-mode laser in order to provide at least one of self-injection locking and self-phase locked looping for the multi-mode tunable laser. Each of the optical gain region and phase modulation region of the laser is biased by the output of the delay line in order to reduce phase drift of the optical signal.
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公开(公告)号：US10325742B2
公开(公告)日：2019-06-18
申请号：US15391289
申请日：2016-12-27
摘要： The present disclosure provides for a microelectromechanical switch including a first port (e.g., input port), one or more second ports (e.g., output ports), a cantilever beam, and a mechanical spring connected to the cantilever beam for providing a mechanical force to move the cantilever beam. The cantilever beam extends from a first end, which is in contact with either the first port or one of the second ports, to a second end that is switchably connectable to the other of the first port or said one of the second ports. The first and second ports and cantilever beam may be formed in a coplanar waveguide.
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公开(公告)号：US20170186578A1
公开(公告)日：2017-06-29
申请号：US15391289
申请日：2016-12-27
CPC分类号： H01H59/0009 , H01P1/127 , H01P3/003
摘要： The present disclosure provides for a microelectromechanical switch including a first port (e.g., input port), one or more second ports (e.g., output ports), a cantilever beam, and a mechanical spring connected to the cantilever beam for providing a mechanical force to move the cantilever beam. The cantilever beam extends from a first end, which is in contact with either the first port or one of the second ports, to a second end that is switchably connectable to the other of the first port or said one of the second ports. The first and second ports and cantilever beam may be formed in a coplanar waveguide.
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公开(公告)号：US09088369B2
公开(公告)日：2015-07-21
申请号：US13760767
申请日：2013-02-06
IPC分类号： H04B10/00 , H04B10/508 , H03L7/00 , H03B17/00 , H04B10/2575 , H04L7/00 , H04L7/033 , H01S3/11 , H01S3/30
CPC分类号： H04B10/508 , H01S3/10 , H01S3/11 , H01S3/1109 , H01S3/302 , H03B17/00 , H03L7/00 , H04B10/00 , H04B10/2575 , H04B2210/006 , H04L7/0037 , H04L7/0041 , H04L7/0075 , H04L7/033 , H04L7/0337
摘要： Aspects of the disclosure relate generally to a circuit for sustaining an radio frequency (RF) modulated optical signal. The circuit may comprise a self injection locking component having a fiber optic delay line over which a portion of the optical signal propagates. The circuit may also comprise a self phase locked loop component having at least two fiber optic cables having different lengths and over which another portion of the optical signal propagates and a phase detector coupled to the at least two fiber optic cables and configured to determine a phase difference between the signals propagating over one of the respective fiber optic cables. The circuit may further comprise a voltage controlled oscillator configured to generate a stable oscillating signal in response to signals generated by each of the self injection locking and self phase locked loop components, the stable oscillating signal being configured to sustain the optical signal.
摘要翻译： 本公开的方面大体上涉及用于维持射频（RF）调制光信号的电路。 电路可以包括具有光纤延迟线的自注射锁定部件，光信号的一部分在该光纤延迟线上传播。 电路还可以包括具有不同长度的至少两根光纤电缆的自锁相环组件，并且光信号的另一部分传播到该自相位锁相环组件，以及耦合到该至少两根光纤电缆的相位检测器，并配置成确定相位 在各个光纤电缆之一上传播的信号之间的差异。 电路还可以包括压控振荡器，其配置为响应于由每个自注入锁定和自锁定环路分量产生的信号而产生稳定的振荡信号，稳定的振荡信号被配置为维持光信号。
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6.发明申请INTEGRATED PRODUCTION OF SELF INJECTION LOCKED SELF PHASE LOOP LOCKED OPTOELECTRONIC OSCILLATOR 有权自动注入锁定自相位锁定光电振荡器的集成生产公开(公告)号：US20140270786A1
公开(公告)日：2014-09-18
申请号：US13796446
申请日：2013-03-12
IPC分类号： H04B10/61
CPC分类号： H04B10/61 , G02F1/00 , G02F1/0121 , G02F1/2255 , H03B17/00 , H04B10/50
摘要： The present invention details fabrication guidelines of integrated optoelectronic oscillators with frequency and phase stability, having higher frequency selectivity in a relatively small size (compared to the larger size of a higher order electrically realized RF filter), reduced temperature sensitivity, and minimized frequency drift. The integrated photonic components and RF oscillator may use Silicon photonics and microelectronic integration using CMOS and BiCMOS technology, eliminating the need for bulky and/or discrete optical and microwave components.
摘要翻译： 本发明详细描述了具有频率和相位稳定性的集成光电子振荡器的制造指南，具有较小尺寸的较高频率选择性（与高阶电气实现的RF滤波器的较大尺寸相比），降低的温度灵敏度和最小化的频率漂移。 集成光子部件和RF振荡器可以使用硅光子学和使用CMOS和BiCMOS技术的微电子集成，消除了对庞大和/或分立的光学和微波部件的需要。
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公开(公告)号：US20140186045A1
公开(公告)日：2014-07-03
申请号：US13760767
申请日：2013-02-06
IPC分类号： H04B10/508
CPC分类号： H04B10/508 , H01S3/10 , H01S3/11 , H01S3/1109 , H01S3/302 , H03B17/00 , H03L7/00 , H04B10/00 , H04B10/2575 , H04B2210/006 , H04L7/0037 , H04L7/0041 , H04L7/0075 , H04L7/033 , H04L7/0337
摘要： Aspects of the disclosure relate generally to a circuit for sustaining an radio frequency (RF) modulated optical signal. The circuit may comprise a self injection locking component having a fiber optic delay line over which a portion of the optical signal propagates. The circuit may also comprise a self phase locked loop component having at least two fiber optic cables having different lengths and over which another portion of the optical signal propagates and a phase detector coupled to the at least two fiber optic cables and configured to determine a phase difference between the signals propagating over one of the respective fiber optic cables. The circuit may further comprise a voltage controlled oscillator configured to generate a stable oscillating signal in response to signals generated by each of the self injection locking and self phase locked loop components, the stable oscillating signal being configured to sustain the optical signal.
摘要翻译： 本公开的方面大体上涉及用于维持射频（RF）调制光信号的电路。 电路可以包括具有光纤延迟线的自注射锁定部件，光信号的一部分在该光纤延迟线上传播。 电路还可以包括具有不同长度的至少两根光纤电缆的自锁相环组件，并且光信号的另一部分传播到该自相位锁相环组件，以及耦合到该至少两根光纤电缆的相位检测器，并配置成确定相位 在各个光纤电缆之一上传播的信号之间的差异。 电路还可以包括压控振荡器，其配置为响应于由每个自注入锁定和自锁定环路分量产生的信号而产生稳定的振荡信号，稳定的振荡信号被配置为维持光信号。
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公开(公告)号：US20220294107A1
公开(公告)日：2022-09-15
申请号：US17197644
申请日：2021-03-10
IPC分类号： H01Q1/52 , H01Q21/06 , H04B7/0456 , H01Q9/06
摘要： An electromagnetic bandgap (EBG) structure for improving isolation characteristics between antennas of a MIMO antenna array. The structure includes an EBG unit cell formed on a metal layer over a composite dielectric substrate and over a ground plane. The ground plane may include a defected ground structure to further improve isolation, and another metal layer including a substrate integrated waveguide may be included at an interface of the composite dielectric substrate.
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公开(公告)号：US20220060163A1
公开(公告)日：2022-02-24
申请号：US17221920
申请日：2021-04-05
摘要： A tunable passband filter including a signal input port for receiving an input radio frequency (RF) signal, a signal output port for transmitting a filtered output RF signal, a first high-pass section having a first tunable microelectromechanical system (MEMS) switch array to receive the input RF signal from the signal input port, a second high-pass section having a second tunable MEMS switch array to transmit the output RF signal to the signal output port, and a low pass section operatively coupled between the first high-pass section and the second high-pass section, and having each of a first tunable MEMS bridge array, a second tunable MEMS bridge array, and a high impedance line. The tunable passband filter is configured to filter the input RF signal to yield the filtered output RF signal.
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公开(公告)号：US20210384613A1
公开(公告)日：2021-12-09
申请号：US17221965
申请日：2021-04-05
摘要： The present disclosure provides several embodiments of integrated conformal antennas that are designed to be integrated into handheld devices and support operation at millimeter-wave operating frequency band that includes 28 GHz. The antennas have low mutual coupling despite close proximity, and maintain a front-to-back radiation ratio of 10 dB or better within the operating frequency band. The integrated conformal antennas are further capable of supporting operation of the device in different orientations, different forward gains, or a combination thereof.
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