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Multimode VHF Broadcasting Receiver
Hradňanský, Vladimír ; Ing. Vladimír Hubík, Ph.D, (referee) ; Šebesta, Jiří (advisor)
The aim of this work is to design a microprocessor-controlled multimode VHF radio can receive AM, FM and DAB. The first step is to become familiar with digital radio broadcasting DAB and RDS. Then we can proceed to the design of the receiver circuit solution using modern component base. Next it is necessary to write utility software and construct a prototype of receiver, verify its functionality and parameters. The result of the work is the multi-mode VHF broadcasting receiver controlled using touch screen display and supported by web management.
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Multichannel RF power meter
Hradňanský, Vladimír ; Povalač, Aleš (referee) ; Šebesta, Jiří (advisor)
In this work is an analysis of methods for measuring high-frequency power, then the design and implementation of multi-channel processor controlled high-frequency power meter. The device enables communication via USB or RS232 port, correction and calibration calculations stored on the SD card devices, measurement results displayed on the LCD display. The meter is able to of three different probes measure the performance of up to 8 GHz. Built-in 40 dB attenuator allows measurements up to a frequency of 2.5 GHz with power up to 100 W. A complete functional test tool including three types of probes, measuring unit, and software are the results of this work.
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Multimode VHF Receiver
Hradňanský, Vladimír
The aim of this work is to design a microprocessor-controlled multimode VHF radio which can receive AM, FM and DAB. The design of the receiver circuits comes from the singlechip programmable defined radio Si4689 which covers all required modes. The control unit based on RTOS SC23 processor contains a firmware which ensures all needed function of the prototype. The firmware has been verified including testing of all parameters. A multi-mode FM radio, MP3 player and on-line radio stream player operated via touch green and remote control and supported web management is the final result of this work.
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Multichannel RF power meter
Hradňanský, Vladimír ; Povalač, Aleš (referee) ; Šebesta, Jiří (advisor)
In this work is an analysis of methods for measuring high-frequency power, then the design and implementation of multi-channel processor controlled high-frequency power meter. The device enables communication via USB or RS232 port, correction and calibration calculations stored on the SD card devices, measurement results displayed on the LCD display. The meter is able to of three different probes measure the performance of up to 8 GHz. Built-in 40 dB attenuator allows measurements up to a frequency of 2.5 GHz with power up to 100 W. A complete functional test tool including three types of probes, measuring unit, and software are the results of this work.
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Multimode VHF Broadcasting Receiver
Hradňanský, Vladimír ; Ing. Vladimír Hubík, Ph.D, (referee) ; Šebesta, Jiří (advisor)
The aim of this work is to design a microprocessor-controlled multimode VHF radio can receive AM, FM and DAB. The first step is to become familiar with digital radio broadcasting DAB and RDS. Then we can proceed to the design of the receiver circuit solution using modern component base. Next it is necessary to write utility software and construct a prototype of receiver, verify its functionality and parameters. The result of the work is the multi-mode VHF broadcasting receiver controlled using touch screen display and supported by web management.
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