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Electrical and PCB design: An ultra low power RF receiver

In 2011, researchers have shown a design of an ultra low RF wake-up receiver (PDF attached). The PDF contains references to other low power receiver designs.

The job is to create a module (schematics, PCB layout, and PCB) using this or a similar design and containing a 2.4GHz transceiver including a printed antenna, as well as a microcontroller.

(1) The following power consumption targets must be achieved:

a) <50uW (microwatts) in "rx-sleep" mode. This is the default mode.

b) <50mW (milliwatts) in full operating mode (MCU awake and transmitting data)

(2) Further specs of the module must be met:

a) The module wakes up from rx-sleep mode as soon as a specific preamble including a matching device id is sent to the 2.4GHz transceiver. This also means that the module needs a memory for storing a unique ID.

b) The change from rx-sleep to full operating mode must take no longer than 250ms.

c) Power source of the board: 3V LIPO powered, no external stabilizer.

d) Transceiver speed in full operating mode: >=9.6KBit/s.

e) Transceiver sensitivity/power in rx-sleep and in full operating mode must be such that a reliable indoor range of 25m is achieved @2.4KBit/s.

f) MCU provides at least 20KByte of program space, four digital inputs/outputs (3.3V), and two analog inputs/outputs (PCM). MCU clock rate is at least 128KHz, preferably without a separate crystal.

g) The PCB dimensions must be smaller than 3*3cm (smaller is better). The PCB may be double sided / two layers.

h) The PCB silkscreen layer must contain a note to the manufacturer that the antenna section of the board is sensitive to added copper.

(3) Data files and ownership:

a) The schematics and PCB layout are to be provided in an editable format (EAGLE prefered).

b) In addition, the exact data needed for manufacturing is to be provided, such as BOM, dialectric thickness, trace thickness/width, relative permittivity, characteristic impedance, and any other relevant data.

c) Ownership of the module and all data created as part of this job is transferred to the buyer. Information is not shared with third parties, unless agreed with the buyer.

(4) Prototype:

a) In addition to the above, six functioning PCB (looks-like/works-like) prototypes are to be provided to prove that the modules work as intended.

b) A short program demonstrating the functionality of the boards must be provided, for the sender and receiver each.

Habilidades: Engenharia Elétrica, Eletrônica, Layout PCB, Wireless

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Acerca do Empregador:
( 16 comentários ) Stuttgart, Germany

ID do Projeto: #10252022

11 freelancers estão ofertando em média €7685 para esse trabalho

mechatronicsengr

Hi, I have experience with ESP8266 and MSP430 Microcontroller. I can execute this project. I would like to discuss few things. Looking Forward,

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tkousar

Hi, I am an Electrical Engineer practicing for last 10 years in an R&D Organization. I have designed a number of products ranging from RF & Microwave circuits to digital circuits. i have experience in designing fil Mais

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CoherentTech123

Hello Dear, Glad to see your Job! We are a team of experts with a cumulative experience of more than 50 years in the field of embedded systems, programming, electronics and Prototype development. We offer s Mais

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bandrey

Hello, I have a lot of experience in designing low-power RF modules. In most cases, I use SoCs by Texas Instruments. Example of my work: [login to view URL] https://ww Mais

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electronicproyec

developer of electronic prototypes Hi, I'm, I have worked with many RF modules, (which is needed calculations to suit the pcb) I've seen the attached pdf documentation and everything you mentioned, we can talk ab Mais

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bongbong88

Your project is a perfect fit for my experience and abilities. I have read your job carefully and I am sure I am the best candidate for the job. I have extensive experience in developing a wide range of mobile softwa Mais

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wibluho

hi there, I did review for your project, I see you put 2 different reference one from analog transceiver and one for WIfi CHIP with integrated wifi baseband. I designed many RF module I could show you samples if you Mais

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superior5

Hello, I am expert in PCB DESIGN and have done similar project before, would like to help you in this project. Hope to hear back soon, Regards

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