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  2. RF module - Wikipedia

    en.wikipedia.org/wiki/RF_module

    Module physical connection: land grid array, through-hole, and castellated boardlet (from left to right) A variety of methods are used to attach an RF module to a printed circuit board, either with through-hole technology or surface-mount technology. Through-hole technology allows the module to be inserted or removed without soldering.

  3. Comparison of 802.15.4 radio modules - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_802.15.4...

    An 802.15.4 radio module is a small device used to communicate wirelessly with other devices according to the IEEE 802.15.4 protocol. This table lists production ready-to-use certified modules only, not radio chips. A ready-to-use module is a complete system with a transceiver, and optionally an MCU and antenna on a printed

  4. LPD433 - Wikipedia

    en.wikipedia.org/wiki/LPD433

    LPD433 (low power device 433 MHz) is a UHF band in which license free communication devices are allowed to operate in some regions. The frequencies correspond with the ITU region 1 ISM band of 433.050 MHz to 434.790 MHz.

  5. Radio transmitter design - Wikipedia

    en.wikipedia.org/wiki/Radio_transmitter_design

    A radio transmitter design has to meet certain requirements. These include the frequency of operation, the type of modulation, the stability and purity of the resulting signal, the efficiency of power use, and the power level required to meet the system design objectives. [1]

  6. Bias tee - Wikipedia

    en.wikipedia.org/wiki/Bias_tee

    A bias tee is a three-port network used for setting the DC bias point of some electronic components without disturbing other components. The bias tee is a diplexer.The low-frequency port is used to set the bias; the high-frequency port passes the radio-frequency signals but blocks the biasing levels; the combined port connects to the device, which sees both the bias and RF.

  7. RF front end - Wikipedia

    en.wikipedia.org/wiki/RF_front_end

    Block diagram of a superheterodyne receiver. The RF front end consists of the components on the left colored red. In a radio receiver circuit, the RF front end, short for radio frequency front end, is a generic term for all the circuitry between a receiver's antenna input up to and including the mixer stage. [1]

  8. Illinois judge Michael J. Valentine found dead outside his ...

    www.aol.com/news/illinois-judge-michael-j...

    The body of Illinois Second Judicial Circuit Court Judge Michael J. Valentine was discovered fatally shot outside of his Albion, Illinois during a wellness check on Nov. 5.

  9. Radio-frequency engineering - Wikipedia

    en.wikipedia.org/wiki/Radio-frequency_engineering

    Radio-frequency (RF) engineering is a subset of electrical engineering involving the application of transmission line, waveguide, antenna, radar, and electromagnetic field principles to the design and application of devices that produce or use signals within the radio band, the frequency range of about 20 kHz up to 300 GHz.