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Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00 Details of transmission systems not characterised by the medium used for transmission
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ELECTRICITY
H04
Electric communication
H04B
TRANSMISSION
Current Industry
H04B1/00
Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00 Details of transmission systems not characterised by the medium used for transmission
Sub Industries
H04B1/0003
Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware
H04B1/0007
wherein the AD/DA conversion occurs at radiofrequency or intermediate frequency stage
H04B1/001
Channel filtering
H04B1/0014
using DSP [Digital Signal Processor] quadrature modulation and demodulation
H04B1/0017
Digital filtering
H04B1/0021
Decimation
H04B1/0025
using a sampling rate lower than twice the highest frequency component of the sampled signal
H04B1/0028
wherein the AD/DA conversion occurs at baseband stage
H04B1/0032
with analogue quadrature frequency conversion to and from the baseband
H04B1/0035
Channel filtering
H04B1/0039
using DSP [Digital Signal Processor] quadrature modulation and demodulation
H04B1/0042
Digital filtering
H04B1/0046
Decimation
H04B1/005
adapting radio receivers, transmitters andtransceivers for operation on two or more bands
H04B1/0053
with common antenna for more than one band
H04B1/0057
using diplexing or multiplexing filters for selecting the desired band
H04B1/006
using switches for selecting the desired band
H04B1/0064
with separate antennas for the more than one band
H04B1/0067
with one or more circuit blocks in common for different bands
H04B1/0071
using a common intermediate frequency for more than one band
H04B1/0075
using different intermediate frequencied for the different bands
H04B1/0078
with a common intermediate frequency amplifier for the different intermediate frequencies
H04B1/0082
with a common local oscillator for more than one band
H04B1/0085
where one band is the image frequency band of the other and the band selection is done by image rejection
H04B1/0089
using a first intermediate frequency higher that the highest of any band received
H04B1/0092
using a wideband front end
H04B1/0096
where a full band is frequency converted into another full band
H04B1/02
Transmitters
H04B1/03
Constructional details
H04B1/034
Portable transmitters
H04B1/0343
to be carried on the body
H04B1/0346
Hand-held transmitters
H04B1/036
Cooling arrangements
H04B1/04
Circuits
H04B1/0458
Arrangements for matching and coupling between power amplifier and antenna or between amplifying stages
H04B1/0466
Fault detection or indication
H04B1/0475
with means for limiting noise, interference or distortion
H04B1/0483
Transmitters with multiple parallel paths
H04B1/06
Receivers
H04B1/08
Constructional details
H04B1/082
to be used in vehicles
H04B1/086
Portable receivers
H04B1/088
with parts of the receiver detachable or collapsible
H04B1/10
Means associated with receiver for limiting or suppressing noise or interference induced by transmission
H04B1/1009
Placing the antenna at a place where the noise level is low and using a noise-free transmission line between the antenna and the receivers
H04B1/1018
noise filters connected between the power supply and the receiver
H04B1/1027
assessing signal quality or detecting noise/interference for the received signal
H04B1/1036
with automatic suppression of narrow band noise or interference
H04B1/1081
Reduction of multipath noise
H04B1/109
by improving strong signal performance of the receiver when strong unwanted signals are present at the receiver input
H04B1/12
Neutralising, balancing, or compensation arrangements
H04B1/123
using adaptive balancing or compensation means
H04B1/126
having multiple inputs
H04B1/14
Automatic detuning arrangements
H04B1/16
Circuits
H04B1/1607
Supply circuits
H04B1/1615
Switching on; Switching off
H04B1/1623
using tubes
H04B1/163
Special arrangements for the reduction of the damping of resonant circuits of receivers
H04B1/1638
Special circuits to enhance selectivity of receivers not otherwise provided for
H04B1/1646
adapted for the reception of stereophonic signals
H04B1/1653
Detection of the presence of stereo signals and pilot signal regeneration
H04B1/1661
Reduction of noise by manipulation of the baseband composite stereophonic signal or the decoded left and right channels
H04B1/1669
of the demodulated composite stereo signal
H04B1/1676
of the sum or difference signal
H04B1/1684
of the decoded left or right stereo channel
H04B1/1692
using companding of the stereo difference signal
H04B1/18
Input circuits
H04B1/20
for coupling gramophone pick-up, recorder output, or microphone to receiver
H04B1/202
by remote control
H04B1/205
with control bus for exchanging commands between units
H04B1/207
with an audio or audio/video bus for signal distribution
H04B1/22
for receivers in which no local oscillation is generated
H04B1/24
the receiver comprising at least one semiconductor device having three or more electrodes
H04B1/26
for superheterodyne receivers
H04B1/28
the receiver comprising at least one semiconductor device having three or more electrodes
H04B1/30
for homodyne or synchrodyne receivers
H04B1/302
for single sideband receivers
H04B1/38
Transceivers
H04B1/3805
with built-in auxiliary receivers
H04B1/3816
Mechanical arrangements for accommodating identification devices
H04B1/3818
Arrangements for facilitating insertion or removal of identification devices
H04B1/3822
specially adapted for use in vehicles
H04B1/3827
Portable transceivers
H04B1/3833
Hand-held transceivers
H04B1/3838
Arrangements for reducing RF exposure to the user
H04B1/385
Transceivers carried on the body
H04B1/3877
Arrangements for enabling portable transceivers to be used in a fixed position
H04B1/3883
Arrangements for mounting batteries or battery chargers
H04B1/3888
Arrangements for carrying or protecting transceivers
H04B1/40
Circuits
H04B1/401
for selecting or indicating operating mode
H04B1/403
using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency
H04B1/405
with multiple discrete channels
H04B1/406
with more than one transmission mode
H04B1/408
the transmitter oscillator frequency being identical to the receiver local oscillator frequency
H04B1/44
Transmit/receive switching
H04B1/46
by voice-frequency signals by pilot signals
H04B1/48
in circuits for connecting transmitter and receiver to a common transmission path
H04B1/50
using different frequencies for the two directions of communication
H04B1/52
Hybrid arrangements
H04B1/525
with means for reducing leakage of transmitter signal into the receiver
H04B1/54
using the same frequency for two directions of communication
H04B1/56
with provision for simultaneous communication in two directions
H04B1/58
Hybrid arrangements
H04B1/581
using a transformer
H04B1/582
with automatic balancing
H04B1/583
using a bridge network
H04B1/585
with automatic balancing
H04B1/586
using an electronic circuit
H04B1/587
using opto-couplers
H04B1/588
using sampling gates
H04B1/59
Responders Transponders
H04B1/60
Supervising unattended repeaters
H04B1/62
for providing a predistortion of the signal in the transmitter and corresponding correction in the receiver
H04B1/64
Volume compression or expansion arrangements
H04B1/66
for reducing bandwidth of signals for improving efficiency of transmission
H04B1/662
using a time/frequency relationship
H04B1/665
using psychoacoustic properties of the ear
H04B1/667
using a division in frequency subbands
H04B1/68
for wholly or partially suppressing the carrier or one side band or by using special modulation methods
H04B1/69
Spread spectrum techniques
H04B1/692
Hybrid techniques using combinations of two or more spread spectrum techniques
H04B1/707
using direct sequence modulation
H04B1/70712
with demodulation by means of convolvers
H04B1/70718
with asynchronous demodulation
H04B1/7073
Synchronisation aspects
H04B1/70735
Code identification
H04B1/7075
with code phase acquisition
H04B1/70751
using partial detection
H04B1/70752
Partial correlation
H04B1/70753
Partial phase search
H04B1/70754
Setting of search window
H04B1/70755
Setting of lock conditions
H04B1/70756
Jumping within the code
H04B1/70757
with increased resolution
H04B1/70758
Multimode search
H04B1/7077
Multi-step acquisition
H04B1/70775
Multi-dwell schemes
H04B1/708
Parallel implementation
H04B1/7083
Cell search
H04B1/7085
using a code tracking loop
H04B1/7087
Carrier synchronisation aspects
H04B1/709
Correlator structure
H04B1/7093
Matched filter type
H04B1/7095
Sliding correlator type
H04B1/7097
Interference-related aspects
H04B1/71
the interference being narrowband interference
H04B1/7101
with estimation filters
H04B1/7102
with transform to frequency domain
H04B1/7103
the interference being multiple access interference
H04B1/7105
Joint detection techniques
H04B1/71052
using decorrelation matrix
H04B1/71055
using minimum mean squared error [MMSE] detector
H04B1/71057
using maximum-likelihood sequence estimation [MLSE]
H04B1/7107
Subtractive interference cancellation
H04B1/71072
Successive interference cancellation
H04B1/71075
Parallel interference cancellation
H04B1/711
the interference being multi-path interference
H04B1/7113
Determination of path profile
H04B1/7115
Constructive combining of multi-path signals
H04B1/7117
Selection, re-selection, allocation or re-allocation of paths to fingers
H04B1/712
Weighting of fingers for combining
H04B1/713
using frequency hopping
H04B1/7136
Arrangements for generation of hop frequencies
H04B1/7143
Arrangements for generation of hop patterns
H04B1/715
Interference-related aspects
H04B1/7156
Arrangements for sequence synchronisation
H04B1/7163
using impulse radio
H04B1/71632
Signal aspects
H04B1/71635
Transmitter aspects
H04B1/71637
Receiver aspects
H04B1/717
Pulse-related aspects
H04B1/7172
Pulse shape
H04B1/7174
Pulse generation
H04B1/7176
Data mapping
H04B1/7183
Synchronisation
H04B1/719
Interference-related aspects
H04B1/72
Circuits or components for simulating aerials
H04B1/74
for increasing reliability
H04B1/745
using by-passing or self-healing methods
H04B1/76
Pilot transmitters or receivers for control of transmission or for equalising
Industries
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last 30 patents
Information
Patent Grant
Sensor system, cutter element, cutting tool and method of using same
Patent number
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Issue date
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Patent number
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Issue date
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The United States of America, as represented by the Secretary of the Navy
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H01 - BASIC ELECTRIC ELEMENTS
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Patent number
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Issue date
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Issue date
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Patent number
11,973,543
Issue date
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Patent Grant
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Patent number
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Issue date
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Patent number
11,973,558
Issue date
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Patent Grant
Method and system for a repeater network that utilizes distributed...
Patent number
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Issue date
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Patent Grant
Radio frequency front end module including common filter
Patent number
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Issue date
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Patent Grant
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Patent number
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Issue date
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Patent Grant
Co-cable probability detection method and apparatus
Patent number
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Issue date
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Patent Grant
Antenna structure and wireless communication device using same
Patent number
11,973,261
Issue date
Apr 30, 2024
Chiun Mai Communication Systems, Inc.
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H01 - BASIC ELECTRIC ELEMENTS
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Healthcare worker smart visor
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Issue date
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G06 - COMPUTING CALCULATING COUNTING
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Patent Grant
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Patent number
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Issue date
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Mobilus Labs Limited
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Patent Grant
Distributed fiber optic sensor placement procedure
Patent number
11,971,294
Issue date
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NEC Corporation
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Tera-sample-per-second arbitrary waveform generator
Patent number
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Issue date
Apr 30, 2024
United States of America as represented by the Secretary of the Navy
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H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Synchronized multiple-radio antenna systems and methods
Patent number
11,973,271
Issue date
Apr 30, 2024
Ubiquiti Inc.
Richard J. Keniuk
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Self interference noise cancellation to support multiple frequency...
Patent number
11,973,525
Issue date
Apr 30, 2024
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
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Patent number
11,973,531
Issue date
Apr 30, 2024
Nippon Telegraph and Telephone Corporation
Rintaro Harada
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Determining attenuation rate using imagery
Patent number
11,973,534
Issue date
Apr 30, 2024
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G06 - COMPUTING CALCULATING COUNTING
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Patent Grant
Wavelength monitoring circuit
Patent number
11,973,535
Issue date
Apr 30, 2024
Nippon Telegraph and Telephone Corporation
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G01 - MEASURING TESTING
Information
Patent Grant
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Patent number
11,973,536
Issue date
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Patent Grant
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Patent number
11,973,540
Issue date
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G06 - COMPUTING CALCULATING COUNTING
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Patent Grant
RRC indication to enable pathloss reference signal updates via MAC-CE
Patent number
11,973,541
Issue date
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Patent Grant
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Patent number
11,973,740
Issue date
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AhP-Tech Inc.
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Synchronization of signals transmitted over power lines
Patent number
11,973,350
Issue date
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H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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Patent Grant
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Patent number
11,973,472
Issue date
Apr 30, 2024
NEWRACOM, INC.
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H03 - BASIC ELECTRONIC CIRCUITRY
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Patent Grant
Methods and systems for assisting radio frequency selection
Patent number
11,973,570
Issue date
Apr 30, 2024
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G08 - SIGNALLING
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Patent number
11,973,577
Issue date
Apr 30, 2024
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H03 - BASIC ELECTRONIC CIRCUITRY
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Patent Grant
Communication method of heterogeneous distributed wireless network...
Patent number
11,973,583
Issue date
Apr 30, 2024
Korea Advanced Institute of Science and Technology
Joonhyuk Kang
H04 - ELECTRIC COMMUNICATION TECHNIQUE
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last 30 patents
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Publication date
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Publication number
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Publication date
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Publication number
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Publication date
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Publication number
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Publication date
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
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Publication number
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Publication date
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CACI, Inc. - Federal
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
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Publication number
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Publication date
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
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Publication number
20240147413
Publication date
May 2, 2024
Comcast Cable Communications, LLC
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
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Publication number
20240147577
Publication date
May 2, 2024
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RICHARD A. FORDE
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
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Publication number
20240142708
Publication date
May 2, 2024
SEW-EURODRIVE GMBH & CO. KG
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Antenna Combination System and Terminal Device
Publication number
20240145910
Publication date
May 2, 2024
Honor Device Co., Ltd.
Aofang Zhang
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
ANTENNA CORRECTION SYSTEM
Publication number
20240145911
Publication date
May 2, 2024
AUDEN TECHNO CORP.
YUNG-TAI HSU
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
METHOD OF APPLYING AN ACTIVATION SCHEME TO A DIGITALLY CONTROLLED S...
Publication number
20240146346
Publication date
May 2, 2024
Technische Universiteit Delft
Dieuwert Peter Nicolaas Mul
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
RECEIVER SAMPLING ARCHITECTURE FOR INCREASED DYNAMIC RANGE USING WA...
Publication number
20240146347
Publication date
May 2, 2024
Rockwell Collins, Inc.
Jeffrey D. Schmidt
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
INTEGRATED MIXED-SIGNAL ASIC WITH ADC, DAC, AND DSP
Publication number
20240146402
Publication date
May 2, 2024
SEAKR Engineering, Inc.
PAUL RUTT
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
GENERATING DOWNLINK FRAME AND SEARCHING FOR CELL
Publication number
20240146409
Publication date
May 2, 2024
ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
Kap Seok CHANG
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
METHOD AND APPARATUS FOR DETECTING FAILURE OF PASSIVE WAVELENGTH DI...
Publication number
20240146411
Publication date
May 2, 2024
ZTE Corporation
Lei XIAO
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
LASER WITH OPTICAL SIGNAL MANAGEMENT CAPABILITY
Publication number
20240146418
Publication date
May 2, 2024
Avago Technologies International Sales Pte. Limited
John Evan Johnson
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL SIGNAL CONTROLLER, OPTICAL SIGNAL CONTROL METHOD, AND OPTIC...
Publication number
20240146420
Publication date
May 2, 2024
Nippon Telegraph and Telephone Corporation
Masanori NAKAMURA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
CROSS LINK INTERFERENCE (CLI) CONFIGURATION AND MEASUREMENT
Publication number
20240146425
Publication date
May 2, 2024
Apple Inc.
Seyed Ali Akbar FAKOORIAN
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
MULTIPLEX CONVERSION FOR A PASSIVE OPTICAL NETWORK
Publication number
20240146435
Publication date
May 2, 2024
ARRIS Enterprises LLC
David B. Bowler
H04 - ELECTRIC COMMUNICATION TECHNIQUE