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公开(公告)号：US20180294540A1
公开(公告)日：2018-10-11
申请号：US15947293
申请日：2018-04-06
IPC分类号： H01P5/18 , H03F1/56 , H03F3/20 , H03H7/01 , H03H7/46 , H03H7/48 , H04L25/02 , H04W88/06 , H04B1/04 , H04B1/18
CPC分类号： H01P5/18 , H01P5/187 , H03F1/565 , H03F3/195 , H03F3/20 , H03F3/245 , H03F3/60 , H03F2200/207 , H03F2200/465 , H03F2200/541 , H03H7/0115 , H03H7/0138 , H03H7/1741 , H03H7/468 , H03H7/487 , H04B1/04 , H04B1/0458 , H04B1/18 , H04B2001/0408 , H04L25/0264 , H04W88/06
摘要： Certain aspects of the present disclosure provide a directional coupler. In certain aspects, the directional coupler generally includes a first inductor and a second inductor wirelessly coupled to the first inductor. In certain aspects, the directional coupler generally includes an input port at a first terminal of the first inductor and a transmitted port at a second terminal of the first inductor. In certain aspects, the directional coupler generally includes a coupled port at a first terminal of the second inductor and an isolated port at a second terminal of the second inductor. In certain aspects, the directional coupler generally includes a first complex impedance component directly coupled to the isolated port and a second complex impedance component directly coupled to the coupled port.
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42.发明授权公开(公告)号：US10084235B2
公开(公告)日：2018-09-25
申请号：US15674039
申请日：2017-08-10
发明人： Yuanpeng Li , Hanyang Wang , Yafang Yu , Meng Hou
IPC分类号： H01Q1/38 , H01Q5/328 , H01Q9/04 , H01Q13/08 , H01Q1/48 , H01Q1/24 , H01Q5/335 , H04B1/18 , H04B1/04 , H04B1/00 , H01Q5/314 , H01P5/12 , H01P1/213 , H01P1/203
CPC分类号： H01Q5/328 , H01P1/2039 , H01P1/2135 , H01P5/12 , H01Q1/241 , H01Q1/48 , H01Q5/314 , H01Q5/335 , H01Q9/04 , H01Q13/08 , H04B1/0057 , H04B1/0458 , H04B1/18
摘要： The present disclosure relates to the field of antenna technologies and discloses a feeding matching apparatus of a multiband antenna, a multiband antenna, and a radio communication device to improve a bandwidth and efficiency of a lower frequency band. The feeding matching apparatus of a multiband antenna includes: a grounding portion; a feeding portion connected to a signal source, where a signal of the signal source is input into the feeding portion; and two or more ground cable branches with different lengths, where one end of each ground cable branch is electrically connected to the feeding portion, the other end is electrically connected to the grounding portion, at least one ground cable branch is connected in series to a signal filtering component, and the signal filtering component is capable of preventing a signal lower than a frequency point corresponding to the signal filtering component from passing through it.
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公开(公告)号：US10079616B2
公开(公告)日：2018-09-18
申请号：US15249167
申请日：2016-08-26
CPC分类号： H04B1/525 , G06K19/0723 , H04B1/10 , H04B1/18 , H04B5/0056 , H04L27/2602 , H04W4/80
摘要： Examples described herein include devices and methods that may facilitate interoperability between backscatter devices and wireless communication devices. For example, backscatter devices and methods for backscattering are described that provide a transmitted backscattered signal formatted in accordance with a wireless communication protocol (e.g. Bluetooth Low Energy, WiFi, IEEE 802.11, or IEEE 802.15.4). Such communication may reduce or eliminate any modifications required to wireless communication devices necessary to receive and decode backscattered signals.
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公开(公告)号：US20180254562A1
公开(公告)日：2018-09-06
申请号：US15909355
申请日：2018-03-01
申请人： AKG Acoustics GmbH
发明人： Nikola DOBRIC
CPC分类号： H01Q13/085 , H01Q1/088 , H01Q3/443 , H01Q7/00 , H01Q9/285 , H01Q13/10 , H01Q13/16 , H01Q13/18 , H01Q19/30 , H01Q21/0043 , H01Q21/005 , H01Q21/0062 , H01Q21/064 , H01Q21/205 , H01Q23/00 , H04B1/18
摘要： The invention relates to an antenna system for electromagnetic waves in a microwave range. At least one directional antenna such as a Vivaldi antenna and/or an omnidirectional antenna such as a dipole antenna, with at least one central unit including at least one active member which is connectible with at least one reception/transmission system is disclosed. To make the system more flexible, the plugged-in antenna is capacitively coupled to at least one motherboard of the central unit and a booster module, an attenuation module, a calibration module, a combiner module, a filter module, or a passive module is optionally pluggable in the central unit to provide a pluggable module. The functionality of the central unit is determined based on the plugged-in module.
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公开(公告)号：US20180205149A1
公开(公告)日：2018-07-19
申请号：US15921700
申请日：2018-03-15
发明人： Hiroshi NISHIDA , Kenichi ISHIZUKA
CPC分类号： H01Q5/335 , H01F27/2804 , H01F2027/2809 , H01Q1/243 , H01Q1/50 , H01Q5/328 , H01Q9/0421 , H03H7/38 , H04B1/0458 , H04B1/18 , H04B1/401 , H04M1/72519
摘要： An antenna circuit includes a radiation conductor, a matching circuit disposed between a feeding port in the radiation conductor and a feeder circuit, and a frequency-characteristics adjusting circuit connected between a frequency-characteristics adjustment port in the radiation conductor and a ground and including a variable reactance circuit. The matching circuit includes a first inductance element connected in shunt. The frequency-characteristics adjusting circuit includes a second inductance element. The first inductance element and the second inductance element are magnetically coupled to each other.
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公开(公告)号：US20180198482A1
公开(公告)日：2018-07-12
申请号：US15916340
申请日：2018-03-09
申请人： BlackBerry Limited
CPC分类号： H04B1/401 , H01Q1/242 , H01Q9/14 , H03H7/40 , H04B1/0458 , H04B1/18 , H04B17/26 , H04B17/318
摘要： A matching network of a communication device that incorporates teachings of the present disclosure may include, for example, a controller that executes instructions facilitating an identifying a subset of usage scenarios based on a usage condition of the communication device and adjusting the matching network device based on a subset of different tuning scenarios corresponding to the subset of usage scenarios. A group of operational parameters is obtained via parametric measurements for each tuning scenario change between the tuning scenarios corresponding to each of the subset of usage scenarios. Multiple operational parameters are averaged corresponding to each of the tuning scenarios to identify an average operational parameter for each tuning scenario, and a tuning scenario is selected from among the subset of different tuning scenarios based on a determination as to which of the average operational parameters correlates with a desired performance goal. Additional embodiments are disclosed.
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公开(公告)号：US20180198474A1
公开(公告)日：2018-07-12
申请号：US15915545
申请日：2018-03-08
发明人： Hidenori OBIYA , Atsushi HORITA , Hirotsugu MORI
摘要： A high-frequency front end circuit includes a frequency fixed filter and frequency variable LC filters, and these are connected in series in a signal transmission path. The frequency fixed filter transmits high-frequency signals in a frequency band of a communication band and attenuates high-frequency signals outside the frequency band of the communication band. One of the frequency variable LC filters is an LC filter and attenuates unnecessary wave frequencies in the frequency band of the communication band. Another one of the frequency variable filters is a resonator filter that passes high-frequency signals in a frequency band of a selected channel and attenuates high-frequency signals in frequency bands of adjacent communication channels of the selected channel.
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公开(公告)号：US20180198212A1
公开(公告)日：2018-07-12
申请号：US15834468
申请日：2017-12-07
发明人： René Rodríguez
CPC分类号： H01Q9/0442 , H01Q1/38 , H01Q1/50 , H01Q9/16 , H01Q19/005 , H04B1/18 , H04B7/0408
摘要： Apparatus and methods for reconfigurable antenna systems are provided herein. In certain configurations, an antenna system includes an antenna element, a tuning conductor adjacent to and spaced apart from the antenna element, and a switch electrically connected between the tuning conductor and a reference voltage, such as ground. The tuning conductor is operable to load the antenna element, and the switch selectively connects the tuning conductor to the reference voltage to provide tuning to the antenna element.
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公开(公告)号：US20180191312A1
公开(公告)日：2018-07-05
申请号：US15316562
申请日：2016-05-02
发明人： Fenghao MU
CPC分类号： H03F1/342 , H03F3/195 , H03F3/45179 , H03F2200/144 , H03F2200/21 , H03F2200/222 , H03F2200/294 , H03F2200/451 , H03F2200/546 , H03F2203/45024 , H03F2203/45236 , H03F2203/45241 , H03F2203/45512 , H03F2203/45524 , H03F2203/45526 , H04B1/0053 , H04B1/0082 , H04B1/1638 , H04B1/18
摘要： An amplifier for a receiver circuit is disclosed. The amplifier has an input node (Vin) and an output node (Vout). It comprises a tunable tank circuit connected to the output node (Vout), a feedback circuit path connected between the output node (Vout) and the input node (Vin), and a tunable capacitor connected between an internal node of the feedback circuit path and a reference-voltage node. A receiver circuit and a communication apparatus is disclosed as well.
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公开(公告)号：US10009060B2
公开(公告)日：2018-06-26
申请号：US14994928
申请日：2016-01-13
发明人： Kuei-Ju Chiang
IPC分类号： H04B1/48 , H04B1/44 , H04B15/00 , H03H11/34 , H04B1/401 , H04B1/18 , H04B1/403 , H03H11/12 , H04W4/00 , H03H11/04 , H04W84/12
CPC分类号： H04B1/48 , H03H11/12 , H03H11/1291 , H03H11/34 , H03H2011/0494 , H04B1/18 , H04B1/401 , H04B1/403 , H04B1/44 , H04B15/00 , H04W4/80 , H04W84/12
摘要： The disclosure provides a switchable filtering circuit and the related operation method, in particular related to a filtering circuit which can be used for Bluetooth system and wireless local area network system. By using a first switch, a hybrid filtering circuit and a second switch, the received mode and transmitted mode between these two systems is realized. Moreover, the frequency responses and the bandwidth adjustments can be controlled according to the plurality of switchable resistors, the plurality of switchable capacitors and the shared and switchable resistors within the hybrid filter circuit. Moreover, the effects of high operated freedom of the circuit and the circuit size reduction can be achieved.
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