Monday, 2 April 2007

RF Transceiver Design

(photo quoted from European Space Agency)
1. Search RF spec.’s from communication standards
Take IEEE 802.11a/b/g as an example: You can read standards from IEEE802.11a Sub clause 17.3
-Operation frequency band and channel number
-TX and RX in-Band and out-of-band spurious emissions: Conform to national regulations. For Europe, ETS range is 300-328
-Operating temperature: 00C to 400C for office environment
-Transmitted power: IEEE802.11b 1000mW
-Transmitted spectrum mask
-Transmitted center frequency tolerance
-Allowed relative constellation error versus data rate.
-Transmit modulation accuracy.
-Power-on ramp and power-down ramp
-Receiver minimum input level sensitivity
-Adjacent channel rejection: Interfering signal power at adjacent channel, referenced to the desired signal level set at 3dB above th3 sensitivity, for packet error rate <10%>
-Receiver maximum input level: -30dBm measured at that the antenna connector for a minimum error rate.
2. RF Transceiver Architecture and link budget
-Dual-band transceiver architecture: Heterodyne or homodyne, Switched or concurrent dual-based
-Receiver power and gain budget: IEEE 802.11a max power (-30dBm) to sensitivity (-82dBm)
-Transmitter power and gain budget
3. RF Circuit Design
-Dual-band switch
-Dual-band VCO and frequency synthesizer
4. RF Transceiver Integration and Measurement
5. Conclusion(Five steps toward accomplishment)
-Search RF spec. from studying communication standard
-Determine RF transceiver architecture
-Calculate and simulate transceiver link to determine RF sub-circuit spec.
-Design RF sub-circuits with proper technologies such as CMOS/HBT/pHEMT MMIC, HMIC
-RF transceiver integration and measurement

1 comment:

Anonymous said...

Hey there I am so grateful I found your site, I really found you by mistake, while I was looking
on Bing for something else, Nonetheless I am here now and would just like to say many thanks for a tremendous
post and a all round thrilling blog (I also love the theme/design), I don’t have
time to read through it all at the moment but I have bookmarked it and
also added in your RSS feeds, so when I have time I will be back
to read a lot more, Please do keep up the superb b.

my webpage: usa poker sites