How can I generate a frequency of 5 GHZ with a crystal

Question

We are going to need many more details. You have marked it as PCB and manufacturing, are you wanting to make your own crystal? Do you want it to be exactly 5.000 GHz? — Kellenjb, Mar 29 '11 at 14:18

score 8 · Answer 1 · answered Mar 29 '11 at 14:19

8

Through frequency multiplication, e.g. 50x100MHz, or 100x50MHz etc.

This can be done either directly using frequency multipliers, or indirectly using phase locked loop, and locking 5 GHz oscillator to crystal reference oscillator.

answered Mar 29 '11 at 14:19

Jaroslav Cmunt

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score 4 · Answer 2 · answered Mar 29 '11 at 14:16

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Use one of these PLL chips with a suitable crystal oscillator for the reference signal and one of these VCOs. You will need a suitable MCU to configure the PLL chip. It's a standard microwave PLL synthesiser approach.

answered Mar 29 '11 at 14:16

Leon Heller

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score 3 · Answer 3 · answered Mar 29 '11 at 14:25

If you are using the 5 GHz for wireless application you will need to check to see if exactly 5 GHz is required, many times stuff is said to be a certain frequency, but it is actually a slightly different frequency needed. For example, here is a Voltage Control Oscillator (VCO) that can vary between 5.256 and 5.356GHz. These are very useful when trying to get locks on to communication systems.

How can I generate a frequency of 5 GHZ with a crystal

3 Answers3