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Rozvoj ústavu radioelektroniky je podporován projektem "Advanced Communication Systems and Technologies" (reg. č. 230126) Sedmého rámcového programu EU.

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Surrounding capture head

Authors:

Gotthans, T.

Type:

functional demonstrator

Date:

2017-12-28

Projects:

TH02010839 - Automated mapping routes and barriers for pedestrians and disabled people

A sensing unit that monitors walkways using a laser unit, optical filter, and optical cameras. Based on the data obtained, it then extracts the necessary parameters for classifying the roughness of the routes and the space.

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Analog circuit realization of mathematical model of multi-valued static memory cell

Authors:

Petržela, J.

Type:

functional demonstrator

Date:

2017-12-19

Projects:

GA15-22712S - Chaotic tangles in subsystems of radiofrequency channel
ED2.1.00/03.0072 - Centre of sensor, information and communication systems

It is a pair of fully analog realizations of a mathematical model describing multiple-valued memory cell employing two resonant tunneling diodes. Ampere voltage characteristics of these diodes are generalized and approximated by the piecewise linear segments having two breakpoints and the negative immittance converters. Speaking in terms of a functional example, values of these breakpoints are derived from the supply voltages. Designed circuits have been constructed and verified by a detailed measurement; doing so existence of the structurally stable strange attractors was proved.

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Computer Controlled Non-Linear Transmission Line

Authors:

Aleš POVALAČ, Michal KUBÍČEK, Jiří ŠEBESTA, Lubomír BRANČÍK

Type:

functional demonstrator

Date:

2017-12-04

Projects:

GA15-18288S, Research of signal integrity at high-speed interconnects
LO1401 - Interdisciplinární výzkum bezdrátových technologií (INWITE)

The functional demonstrator is a realization of an experimental digitally adjustable non-linear transmission line. A single block of the demonstrator is composed of eight sections of the non-linear transmission line. Each section can be individually configured using an isolated I2C communication interface. Up to four blocks can be chained to realize and analyze non-linear transmission line composed of up to 32 sections. The I2C bus is connected with a converter to the USB interface of a computer, which runs a control application for DAC channel settings. Further application control is realized via TCP/IP subsystem from the MATLAB environment.

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Detector of burning

Authors:

Jan Cupák

Type:

functional demonstrator

Date:

2017-12-04

Projects:

LO1401 Interdisciplinary Research of Wireless Technologies (INWITE).
Centre of Sensor, Information and Communication Systems (SIX).

The flame detector is used for the measuring the burning time of the swirling dust mixture with air, which is the complementary information to the basic explosive characteristic of tested industrial dusts. Burning time is important for identification of secondary flames, which are not be able to predict from the pressure characteristic. Flame detector is able to be characterized as the special optical converter, which is installed in the cover of the explosive chamber. Optical part of the detector is separated from the inner part of the explosive chamber by silicon glass with thickness 30 mm.

Electronics of the flame detector is designed for the maximal working temperature 100°C, which can be realistically expect at the cover of the chamber. Input optical part of the detector is equipped by wideband optocoupler JE10UV, which is able to work with 220 to 1070 nm optical signals. The output signal is matched (impedance) and amplified by single stage amplifier with the cut-off frequency 20 MHz (G=1). The last operational amplifier is Rail - Rail type. The final dynamic range of output voltage is from 0.1 to 4.9 V.

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Engineering model of an electrooptical modulator driver of the power laser for eLISA project

Authors:

Kasal, M., Záplata, F.

Type:

functional demonstrator

Date:

2017-11-17

Projects:

HS18557177 - High-power Laser Head - Modulator Driver - Phase 2
ED2.1.00/03.0072 - Center of Sensor, Information and Communication Systems (SIX) OP Research and Development for Innovation.

The driver development is a part of the Laser Head for Gravitational Wave Observatory Mission. The developed engineering model is a final result of phase 2. The device couples two input signals, harmonic sine wave at frequency 2.4 GHz and pseudorandom data sequence of at most 1 Mbaud bit-rate. Such a signal is used as a modulation signal for an electrooptical modulator of laser beam. To fulfill the requirements on output laser beam spectrum, the driver must set levels of the input signals precisely and meet strict noise requirements.

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30dB Directional Coupler for Predistortion Measurement in Band 57-64GHz

Authors:

Tomáš URBANEC, Roman MARŠÁLEK

Type:

functional demonstrator

Date:

2017-11-01

Projects:

LO1401 Interdisciplinary Research of Wireless Technologies (INWITE)
FEKT-S-17-4713 Microwave technologies for future wireless systems
GA17-18675S Future tranceiver techniques for the society in motion
Centre of Sensor, Information and Communication Systems (SIX)

The directional coupler is intended for predistortion measurement of active parts and their linearisation in band 57-64GHz. Its coupling losses are 30dB and directivity better than 15dB. The directional coupler is specifically designed for the use with wireless kit INFINEON BGT60, the WR-15 ports are positioned accordingly. The directional coupler has specific design which allows for the three main ports to be in one plane, which is not fulfilled with any commercially available coupler type

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Broadband antenna for frequency band 2.4 - 6.0 GHz

Authors:

Jaroslav LÁČÍK

Type:

functional demonstrator

Date:

2017-09-27

Projects:

Project no. SR18757065 with copany ŠKODA AUTO a.s.
LO1401 -Interdisciplinary Research of Wireless Technologies (INWITE)

The broadband antenna for frequency band from 2.4 to 6.0 GHz was designed and fabricated according to the requirements of the project. Custom antenna is placed in a plastic cover. The antenna is equipped with a plastic holder equipped by N-type FEMALE connector at the end.

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Broadband antenna for frequency band 555 - 960 MHz

Authors:

Jaroslav LÁČÍK

Type:

functional demonstrator

Date:

2017-09-27

Projects:

Project no. SR18757065 with copany ŠKODA AUTO a.s.
LO1401 - Interdisciplinary Research of Wireless Technologies (INWITE)

The broadband antenna for frequency band from 555 to 960 MHz was designed and fabricated according to the requirements of the project. Custom antenna is placed in a plastic cover. The antenna is equipped with a plastic holder equipped by N-type FEMALE connector at the end.

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Skoda Fuse Adaptor

Authors:

Aleš POVALAČ, Michal KUBÍČEK, Jiří DŘÍNOVSKÝ

Type:

functional demonstrator

Date:

2017-09-15

Projects:

Projekt č. HS18657075 s firmou ŠKODA AUTO a.s.
LO1401 - Interdisciplinární výzkum bezdrátových technologií (INWITE)

Fuse Adaptor is a dedicated device for measurement of electro-magnetic compatibility (EMC) of cars. The device enables significant speedup of standard measurement procedure. It is able to electrically disconnect power supply to selected subsystems of the measured car by disconnecting its protecting unit in the car fuse box. The Fuse Adaptor is controllable via optical interface using a PC. The Fuse Adaptor is fully integrated into the Rohde & Schwarz EMC32 software environment of automated EMC measurement.

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Skoda CAN controller

Authors:

Aleš POVALAČ, Michal KUBÍČEK, Jiří DŘÍNOVSKÝ

Type:

functional demonstrator

Date:

2017-09-15

Projects:

Projekt č. HS18657075 s firmou ŠKODA AUTO a.s.
LO1401 - Interdisciplinární výzkum bezdrátových technologií (INWITE)

CAN controller is a dedicated device for measurement of electro-magnetic compatibility (EMC) of cars. The device enables significant speedup of standard measurement procedure. It is capable of monitoring up to 4 CAN busses and is able to inject commands to the CAN bus. The device is powered either by a dedicated connector (BNC) or by one of the CAN interfaces (OBD interface). The CAN controller is controllable via optical interface using a PC. The CAN controller is fully integrated into the Rohde & Schwarz EMC32 software environment of automated EMC measurement.

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Skoda Dummy Radio (third generation)

Authors:

Aleš POVALAČ, Michal KUBÍČEK, Jiří DŘÍNOVSKÝ

Type:

functional demonstrator

Date:

2017-09-15

Projects:

Projekt č. HS18657075 s firmou ŠKODA AUTO a.s.
LO1401 - Interdisciplinární výzkum bezdrátových technologií (INWITE)

Dummy Radio is a dedicated device for measurement of electro-magnetic compatibility (EMC) of cars. The device enables significant speedup of standard measurement procedure and enables measurement in wider frequency band thanks to increased bandwidth of its components. The Dummy Radio enables switching of six independent antenna ports to one measurement port. The bandwidth of antenna ports is 200 kHz to 12 GHz (channel 1 to 5) and 100 kHz to 6 GHz (channel 6). All the antenna ports are powered with selectable DC power supply of either 8,5 V or 12 V (channel 1 to 5) and either 5,0 V or 8,5 V (channel 6). All the power supplies are independent and are equipped with short-circuit protection and current limiter. The device enables independent monitoring of voltage and current at any of its ports. The third generation of the Dummy Radio is controllable via optical interface using a PC. The Dummy Radio is fully integrated into the Rohde & Schwarz EMC32 software environment.

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Outdoor unit for photonic free-space optical link

Authors:

Zdeněk KOLKA, Otakar WILFERT, Viera BIOLKOVÁ, Aleš DOBESCH, Peter BARCÍK, Marek NOVÁK

Type:

functional demonstrator

Date:

2017-06-30

Projects:

TH01011254 - Set of elements for photonics communication (EPCOM II)
LO1401 - Interdisciplinary Research of Wireless Technologies (INWITE)

The photonic Free-Space Optical link transmits optical signals in free space without transformation into electrical signals. Each terminal consists of an outdoor unit, which is usually installed on a building roof, and an indoor unit. The outdoor unit operates in the 1500 nm waveband. It consists of main optical transmitter, Schmidt-Cassegrain receiving telescope stabilized by stepper motors and a MEMS mirror, beacon transmitter, and control electronic blocks. The unit is housed in a special outdoor cabinet. The input and output fibers are connected using LC connectors. The electrical interface includes 48V power supply and RS-485 line for connection to the indoor unit. Remote control is provided through a web-based interface and an UDP-based protocol implemented in the indoor unit. The system allows remote monitoring, configuration and long-term data recording into an internal storage.The functional sample has been developed in cooperation with the Orcave Company in frame of project TH01011254.

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Experimental Satellite Psat-2 Camera

Authors:

Aleš POVALAČ, Tomáš URBANEC

Type:

functional demonstrator

Date:

2017-02-02

Projects:

LO1401 Interdisciplinary Research of Wireless Technologies (INWITE)
FEKT-S-17-4713 Microwave technologies for future wireless systems
Centre of Sensor, Information and Communication Systems (SIX)

The camera is functional part of experimental satellite Psat-2. It allows picture acquisition in the viewing angle of the satellite and their transmission through satellite transmitters. The camera consists of controlling microprocessor STM32, camera module OV2640 and nonvolatile memory for storing of obtained pictures before their transmition to Earth with the use of satellite transmitters. Pictures are made in resolution of 320*240 color pixels and it is possible to send them to Earth in various modes with diverse quality which is directly proportional with transmission time in the SSTV mode. There are implemented modes Robot 36, 72, MP73 and 115. Camera can be requested of time sequence or depending on irradiance of picture sensor viewing angle. The testing pictures are also stored in the microprocessor memory with known content. This allows investigating the transmission channel even in the case of camera module fault. Camera is fully integrated into experimental satellite Psat-2 of US Navy Academy, Maryland.

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Experimental Satellite Psat-2 Camera

Authors:

Aleš POVALAČ, Tomáš URBANEC

Type:

functional demonstrator

Date:

2017-02-01

Projects:

LO1401 Interdisciplinary Research of Wireless Technologies (INWITE)
FEKT-S-17-4713 Microwave technologies for future wireless systems
Centre of Sensor, Information and Communication Systems (SIX)

The Transponder is functional part of experimental satellite Psat-2 dedicated to retransmission of narrow bandwidth modulation signals from 29.5MHz to 435MHz. Transponder consists of narrowband receiver for frequency 29.480MHz with bandwidth 3kHz and transmitter with frequency 435.350MHz and frequency modulation. Further there is microprocessor which takes care of transponder control, with the use of settings and satellite state. For the parameter control, there is implemented the control signal detector. Microprocessor generates also modulation signal of BPSK31 beacon, which transmits telemetry of transponder and whole satellite. Transmitter allows connection of other modulation signals. Transponder is fully integrated into experimental satellite Psat-2 of US Navy Academy, Maryland.

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