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For high power applications you essentially need a current source for each LED. I do not believe that it is a good viable solution to place several low power LED's in parallel without somesort of a series resistor.
Kouly is right, if you are using it in an digital comms system and good BER is critical then the stated phase noise is probably a little high at 100kHz offset figures of -100dBc/Hz or better is good and desirable.
If you like you can download Ansoft Designer - Student Version for free and there you can experiment in software with some of the system simulators that you have learnt about in the preceeding texts and applications notes
Re: AM Mixer Design
You really should look at the signal levels at each stage of your design, a simple transistor mixer is where one sigal is applied to the base of the transistor and the other - modulating one is applied to the emitter. Other wise you could use a dual gate fet and use one of...
I have designed a bi directional amp for commerical purposes to work at these frequencies, (2.3G to 2.7GHz). Very stable and extremely high performance.
If you need help you can contact me with a private message
Re: beginer in RF
Books like Microwave engineering by pozar, Microwave Amplifiers by Gonzalez and RF Design by Bowick are excellent resources.
Interms of practical experiance, it is a case of learning on the job and building and experimenting with little circuits. This way you will get a good...
rf layout techniques
Typically, all good layout techniques for RF design comes with alot of experiance and common sense. Some pointers include.
Keep the traces that connect frequency sensitive components ie osc or lna etc small.
Pay carefull attention to the layout of the power supply rails...
Re: question about VCO
For PLL design you should look at the ebook that is posted on national.com/wireless site, the author is Dean Banerjee, it is also available from Amazon too.
Once you have designed your circuit you can tweek it on the bench.
Re: Antenna 406MHz
One of the main uses for 406MHz is for the Emergency Beacons, you should not be playing with this frequency for recreational use or even for data transfer. You run the risk of interfering with the COSPASS-SAR Satellites which are used to detect the presence of the 406MHz...
Re: RF Micro Devices - RF5117 2.4GHz Power Amplifier 802.11
The macom part would work fine but it uses 28V and is 2inches in length if you can let me know more of your requirements i would be very glad to help
Have you thought about a descrete design