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Design a low-cost RF energy harvesting/scavenging circuit

NB: Experience with RF energy-harvesting or energy-scavenging circuits is required.

Item 1:

- Design an RF energy harvesting circuit to power a consumable/disposable device.

- Design of the antenna is not required. The antenna type will be a resonant small-loop antenna.

- The frequency will be fixed.

- The frequency will most likely be 50 kHz.

- Future design changes may require the device to work at a different frequency, from about 2 kHz to 60 kHz. Please consider this in the design and state how a change in the frequency would change the design.

- The power available from the antenna will be very low.

- The signal from the antenna will be a very low voltage, noisy sinusoid.

- State the minimum input voltage level that your circuit can work with.

- The energy should be stored at approximately 1.5 volts.

- Specify some different options for the energy storage capacity (e.g. different sized capacitors).

- At the minimum input voltage level, state the time to reach full charge. Ideally this would be less than about 10 minutes.

- The components should be readily available and not too small, as the PCB will be prototyped by hand.

- Provide a circuit diagram and listing of the components with supplier and prices.

Item 2:

- Produce a version of the circuit which stores the energy at about 22.5 volts.

- Other requirements the same as Item 1.

Item 3:

- Produce a PCB layout for the two designs.

- The layout should be suitable for rapid prototyping using an inkjet printed circuit. The printing process is described at: [url removed, login to view]

- This means that the layout can be up to the size of an A4 piece of paper. A6 paper size is also convenient.

- It should be a single-sided layout.

- The traces should be relatively wide to minimize their resistance.

- Test points should be provided in the layout so that the amount of energy stored may be measured.

Keahlian: Elektronika, Tata Letak PCB

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Tentang Pemberi kerja:
( 1 ulasan ) Richmond Vale, Australia

ID Proyek: #13675409

18 freelancer menawar dengan rata-rata $1155 untuk pekerjaan ini

$1666 USD dalam 35 hari
(48 Ulasan)
6.4
DamithaKD

What experience do you have that is relevant to this project? We have desinged few RF Systems before :) Can we talk about this ? Proposal: HI, About the Project : We have developed similer projects before Lebih banyak

$1250 USD dalam 20 hari
(31 Ulasan)
6.3
rojuwon1222

What experience do you have that is relevant to this project? Hi,Client. I have 13 years experience in circuit, PCB design, manufacture and assemble, firmware and application(VC++, QT, Labview) writing. Proposal: Lebih banyak

$1111 USD dalam 20 hari
(37 Ulasan)
6.4
GrigAnna

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EngSolution

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sgo5884f49acdcb6

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2.4
usmanvardag

What experience do you have that is relevant to this project? I am an RF communication engineer and recently published a research paper on passive wireless sensing ([login to view URL]). I have experience d Lebih banyak

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udayd75

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SPARKtechBD

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iffi37

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thetechvendors

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highfliercnr

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$1333 USD dalam 15 hari
(107 Ulasan)
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vuthanhlqdtu

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