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      Linear RF Power Amplifier (PA) Design Theory and Principles online course – RAHRF562

      Linear RF Power Amplifier (PA) Design Theory and Principles online course – RAHRF562

      $400.00 $300.00
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    Transmitters & Transceivers – RAHRF409

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    • Transmitters & Transceivers - RAHRF409
    Showing 1-10 of 20 results
    Sanchita Sarkar, Ata Sarrafinazhad, Ahsan Ghoncheh

    Drawbacks of Direct Conversion Receivers – Flicker Noise

    • Posted by Sanchita Sarkar, Ata Sarrafinazhad, Ahsan Ghoncheh
    • Categories RF Topics, Transmitters & Transceivers - RAHRF409
    • Comments 0 comment
    September 17, 2021
    1

    What is Flicker Noise? Previously we discussed different categories of noise (pink, white, and band-limited noise). Different types of noise can be specific to devices. Read about types of noise in RF devices. Flicker Noise is one of the types …

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    Sanchita Sarkar, Ata Sarrafinazhad, Ahsan Ghoncheh

    Drawbacks of Direct Conversion Receivers – LO Leakage

    • Posted by Sanchita Sarkar, Ata Sarrafinazhad, Ahsan Ghoncheh
    • Categories RF System Design of Receivers, RF Topics, Transmitters & Transceivers - RAHRF409
    • Comments 0 comment
    September 15, 2021
    0

    Local Oscillator leakage Direct conversion receiver emits fraction of its LO power from its antenna. Isolation is a measure of the leakage, or feedthrough, from one port to another. The figure below shows the leakage from different ports of mixer. …

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    Sanchita Sarkar, Ata Sarrafinazhad, Ahsan Ghoncheh

    Can High Pass Filter be used in Solving DC offset in Homodyne Receiver?

    • Posted by Sanchita Sarkar, Ata Sarrafinazhad, Ahsan Ghoncheh
    • Categories RF System Design of Receivers, RF Topics, Transmitters & Transceivers - RAHRF409
    • Comments 0 comment
    September 14, 2021
    0

    How can the DC offset be removed? How to solve the problem of DC offset in direct conversion receiver? The previous section we discussed about the drawback of homodyne receiver which is DC offset. This DC offset is due to …

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    Sanchita Sarkar, Ata Sarrafinazhad, Ahsan Ghoncheh

    Drawbacks of Direct Conversion Receivers (Homodyne Receivers)

    • Posted by Sanchita Sarkar, Ata Sarrafinazhad, Ahsan Ghoncheh
    • Categories RF System Design of Receivers, RF Topics, Transmitters & Transceivers - RAHRF409
    • Comments 0 comment
    September 12, 2021
    0

    What is a Homodyne Receiver? In a receiver the frequency of a signal is shifted by multiplying with another sinusoidal signal called the carrier wave. This multiplication is performed by a mixer and the sinusoidal wave is generated by the …

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    Sanchita Sarkar, Ata Sarrafinazhad, Ahsan Ghoncheh

    What is Frequency Shift Keying (FSK) Receiver

    • Posted by Sanchita Sarkar, Ata Sarrafinazhad, Ahsan Ghoncheh
    • Categories RF System Design of Receivers, RF Topics, Transmitters & Transceivers - RAHRF409
    • Comments 0 comment
    September 10, 2021
    1

    What is Digital modulation? Digital modulation is used for mapping the binary information sequence over an analog channel (bandpass modulation) appropriate for transmission into the communication channel. This enables us to convey a large amount of information. In addition, Digital …

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    Sanchita Sarkar, Ata Sarrafinazhad, Ahsan Ghoncheh

    Introduction to Direct Conversion Receivers

    • Posted by Sanchita Sarkar, Ata Sarrafinazhad, Ahsan Ghoncheh
    • Categories RF System Design of Receivers, RF Topics, Transmitters & Transceivers - RAHRF409
    • Comments 0 comment
    September 7, 2021
    0

    How is the Structure of Heterodyne Receiver? Till now we have discussed on various structures for heterodyne receivers and the image problem faced by the receiver. The first simple structure discussed is shown in figure 1. Read about the heterodyne …

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    Sanchita Sarkar, Ata Sarrafinazhad, Ahsan Ghoncheh

    Understanding the Structure of Sliding IF Receivers

    • Posted by Sanchita Sarkar, Ata Sarrafinazhad, Ahsan Ghoncheh
    • Categories Blog, RF System Design of Receivers, RF Topics, Transmitters & Transceivers - RAHRF409
    • Comments 0 comment
    September 6, 2021
    1

    What is Sliding IF receivers? In the previous section zero-IF heterodyne receiver, the receiver structure is shown having three mixers that means three local oscillators. The first mixer is for the radio frequency and next two mixers are used for …

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    Sanchita Sarkar, Ata Sarrafinazhad, Ahsan Ghoncheh

    Overview of Zero IF Heterodyne Receiver

    • Posted by Sanchita Sarkar, Ata Sarrafinazhad, Ahsan Ghoncheh
    • Categories Blog, RF System Design of Receivers, RF Topics, Transmitters & Transceivers - RAHRF409
    • Comments 0 comment
    August 31, 2021
    0

    Zero-IF receiver In zero-IF heterodyne receivers with quadrature down conversion have two steps for converting the channel. The first one is first IF the second one is zero IF. Then we have a low pass filter to filter the higher …

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    Sanchita Sarkar, Ata Sarrafinazhad, Ahsan Ghoncheh

    Understanding Quadrature Down conversion

    • Posted by Sanchita Sarkar, Ata Sarrafinazhad, Ahsan Ghoncheh
    • Categories Blog, RF System Design of Receivers, RF Topics, Transmitters & Transceivers - RAHRF409
    • Comments 0 comment
    August 31, 2021
    0

    Quadrature down conversion The quadrature signals are used in order to solve the image problem that we faced in the zero-IF receiver. In quarter down conversion, we create two versions of the down converter signal with a phase difference of …

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    Sanchita Sarkar, Ata Sarrafinazhad, Ahsan Ghoncheh

    Quadrature Signals for Down-conversion

    • Posted by Sanchita Sarkar, Ata Sarrafinazhad, Ahsan Ghoncheh
    • Categories Blog, RF System Design of Receivers, RF Topics, Transmitters & Transceivers - RAHRF409
    • Comments 0 comment
    August 31, 2021
    0

    If we have FM modulation, the channel is not symmetric around the center frequency. The signal is asymmetric and carries different information on both sides. Our signal shape will totally change after down-conversion, and the data will be corrupted, which …

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