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FM Transmitter of APRS Telemetry in 435 MHz Band
Klíma, Martin ; Špaček, Jiří (referee) ; Urbanec, Tomáš (advisor)
FM transmitter APRS of telemetric data is device able to measure telemetric values from its ambient. It is able to send this data to user on earth by radio frequency channel. This device can create data frames, with proper formatting allowing sending data. It operates in 435 MHz band, uses FSK and AFSK modulation. This work describes basic information of used protocols, electronic connection of this transmitter and software equipment.
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SAW resonator controlled FM transmitter
Pokorný, Josef ; Frýza, Tomáš (referee) ; Kolouch, Jaromír (advisor)
This thesis describes design of FM transceiver with SAW resonator. Theoretically analyzes properties of microphone, oscillator and choosing of fitting antenna where it's analyses theirs strong and weak sides. Transceiver has electret microphone. Signal from microphone is amplified by preamplifier OPA134. Further this paper contains oscillator build which output is amplified by monolithic power amplifier and routed through RF filter to antenna.
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SAW resonator controlled FM transmitter
Pokorný, Josef ; Frýza, Tomáš (referee) ; Kolouch, Jaromír (advisor)
This thesis describes design of FM transceiver with SAW resonator. Theoretically analyzes properties of microphone, oscillator and choosing of fitting antenna where it's analyses theirs strong and weak sides. Transceiver has electret microphone. Signal from microphone is amplified by preamplifier OPA134. Further this paper contains oscillator build which output is amplified by monolithic power amplifier and routed through RF filter to antenna.
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FM Transmitter of APRS Telemetry in 435 MHz Band
Klíma, Martin ; Špaček, Jiří (referee) ; Urbanec, Tomáš (advisor)
FM transmitter APRS of telemetric data is device able to measure telemetric values from its ambient. It is able to send this data to user on earth by radio frequency channel. This device can create data frames, with proper formatting allowing sending data. It operates in 435 MHz band, uses FSK and AFSK modulation. This work describes basic information of used protocols, electronic connection of this transmitter and software equipment.
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