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Hi Sputnik,
Normally the bluetooth antenna used by cell phone is inverter F antenna, you can make it by a small PCB. You need to try some length of the inverter F antenna to tune the return loss and efficiency. The volume of the antenna is about 2mm in width and 22mm in length.
For the...
In RF frequency devider, typical BiCMOS, which has 120G FT, the static devider may be can achieve 10~30GHz, but as we known, PLL needs prescaler not static frequency devider, which can perform dual modula deviding, can perform channel selection. This prescaler need more blocks and has a...
vco design bias
Hi,
Tail current device can cause low frequency noise which is AM noise and can be transfered to PM noise by varactor. The high frequency noise located at the harmonics of oscillating frequency also can degrade phase noise.
For the bias device, try to reduce the VDS of the...
@DS&Visual C
Hi,
ADS has an interface with matlab, and matlab has an interface with C/C++. This may connect ADS with C/C++. But if you want to describe some user defined components, a simple way is to use AEL to do it. AEL is a script language which used by ADS. Using this language, you can...
assura lvs without schematic
Also there is an env "AssuraPath" which includes the ASSURAHOME/tools/bin, ASSURAHOME/tools/dfII/bin. I can not remember it clearly, you can check it on Software Problems, Hints and Reviews forum. If you type "which assura" in terminal then get the assura path, and...
tsmc drc rule file
If you use cadence for schematic and layout. It should be OK. Are you sure your env for Assura is right? what's the error message for Assura? you can type "env" in your terminal to get the env of you workstation.
Question about RFID.
Hi,
1) For RFID, it does not mean the carrier frequency is very high. In fact most RFID is located in the low frequency range (<100MHz). From this point maybe we call it wireless or contact-less ID is more reasonable. RFID is just a name for it.
2) For the frequency...
Hi Joakim,
You can refer to razavi's book, RF Microelectronics. From the book, we know that A1-dB=sqrt(0.145a1/a3), AIP3=sqrt(4a1/3a3), so the AIP3=A1-dB +9.6. Here razavi assumes a3 <0, that means when increase the input power the gain of the network decrease. For your circuit, if A1-dB >...
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