1. C

    Wireless Control Idea Help (parts)

    I need help with an idea i had. I’m trying to use RF to control a 24v relay. The receiver would need to turn on and off a normally open 24v rated relay. The transmitter would need to get its signal to turn on or off the receiver from a normally open contact wired to the receiver. Basically when...
  2. M

    Designing device to reflect my laptop's wifi signal.

    If I use aluminium foil to extend the range of the wifi signal that my laptop generates by reflecting the wifi signal, my laptop can generate a wifi signal, how thick should the aluminium foil be?
  3. E

    Designing PCB with multiple RF circuits

    I need Tips and recommendations on how to design a PCB with multiple RF circuits. In my case, the PCB includes a GPS receiver, 802.15.4 2.4GHz, and 433 MHz transceivers. I plan to use a GPS module with a patch antenna. The 433 MHz transceivers will have a PCB or ceramic antenna. an external...
  4. andkr

    Suggestions on choice of antenna in direction finding system using BLE

    Hello! I am currently doing a school project where we are going to design a direction finding system using antennas and an automated robot arm to adjust to angle. From what we have read the most reasonable choice of antenna is either a yagi or parabolic antenna. The robor arm is fairly small...
  5. N

    S-Parameters (Cascaded system) and a few questions on RF Design. (IIP3)

    Please see attached figure for a few of the questions. I would love for the solutions to these questions. Also, what are the effects when the width of the microstrip line is increased?
  6. genekuli

    If I hook up a HF ultra-wideband (UWB) amplifier with a transmitting UWB antenna (out) and a receiving UWB antenna (in)

    If I hook up a HF ultra-wideband (UWB) amplifier with a transmitting UWB antenna (out) and a receiving UWB antenna (in) and have the antennas very close (few inches) to each other inside a metal box (~40cm) so as to produce a feedback loop, then due to the noise and harmonics of the over-driven...
  7. 8

    PCB design for STM32WB55CE Bluetooth MCU

    Hello, I designed a pcb around the STM32WB55CE. The RF design is meant for the capabilities needed for 2.4GHz bluetooth. I looked at the available AN's and did my first shot with the design. Please keep in mind, that this is my first RF circuitry. For the RF matching, I chose the IC provided by...
  8. byro3227

    RF Performance Issues - Board Layout?

    Hello everyone, This is my first post to AAC. Over the past few years I've reference these discussion boards rather frequently and I've found them to be quite informative. I have been working on a wireless sensing application and have some general design questions concerning board layout...
  9. sandyyyy

    Wideband Receiver Design

    I am designing a broadband (100 MHz -6 GHz BW) receiver chain for radar/rcs measurement tester. i will put Low noise amplifier after antenna input followed by mixed(10 MHz IF BW and digitizer). I am facing problem regarding LAN. bandwidth of LAN is approx 6 GHz(100 MHz-6GHz), gain 25-35 dB...