Mar 11, 2008 #1 D drabos Full Member level 6 Joined Jan 3, 2006 Messages 397 Helped 45 Reputation 90 Reaction score 15 Trophy points 1,298 Activity points 3,768 What is the main role of the polyphase filters in RF transceivers?
Mar 11, 2008 #2 M milkdragon Member level 3 Joined May 3, 2007 Messages 64 Helped 12 Reputation 24 Reaction score 7 Trophy points 1,288 Activity points 1,604 Re: poly phase filters To generate I and Q signal
Mar 11, 2008 #3 khouly Advanced Member level 5 Joined Oct 20, 2003 Messages 2,350 Helped 461 Reputation 916 Reaction score 102 Trophy points 1,343 Location EGYPT Activity points 13,242 poly phase filters they are used extensively IQ modulators and demodulators , to genarte I and Q signals from the LO khouly
poly phase filters they are used extensively IQ modulators and demodulators , to genarte I and Q signals from the LO khouly
Mar 12, 2008 #4 hmsheng Full Member level 4 Joined Dec 17, 2003 Messages 219 Helped 26 Reputation 52 Reaction score 10 Trophy points 1,298 Location China Activity points 1,556 poly phase filters 1. Splite the RF signal to 0deg and 90deg for IQ or image rejection usage. 2. Notch filter for image rejection.
poly phase filters 1. Splite the RF signal to 0deg and 90deg for IQ or image rejection usage. 2. Notch filter for image rejection.
Mar 12, 2008 #5 D drabos Full Member level 6 Joined Jan 3, 2006 Messages 397 Helped 45 Reputation 90 Reaction score 15 Trophy points 1,298 Activity points 3,768 poly phase filters and what are the other possibilities to generate I and Q signals? What is the advantage of polyphase filters? What is the advantage of Legendre polynomial filters? Thanks
poly phase filters and what are the other possibilities to generate I and Q signals? What is the advantage of polyphase filters? What is the advantage of Legendre polynomial filters? Thanks
Mar 12, 2008 #6 khouly Advanced Member level 5 Joined Oct 20, 2003 Messages 2,350 Helped 461 Reputation 916 Reaction score 102 Trophy points 1,343 Location EGYPT Activity points 13,242 poly phase filters other posiblities , it use some sort of frequqcy dividers , so if the LO is 2 or 4 times , no need for the poly phase filter but if ur LO is the same freq , u need a poly phase filter khouly
poly phase filters other posiblities , it use some sort of frequqcy dividers , so if the LO is 2 or 4 times , no need for the poly phase filter but if ur LO is the same freq , u need a poly phase filter khouly
Mar 12, 2008 #7 D drabos Full Member level 6 Joined Jan 3, 2006 Messages 397 Helped 45 Reputation 90 Reaction score 15 Trophy points 1,298 Activity points 3,768 poly phase filters Hi Khouly Can you recommend me a good literature in this topic?
Mar 13, 2008 #8 R RFCMOS Full Member level 2 Joined May 5, 2005 Messages 143 Helped 20 Reputation 40 Reaction score 0 Trophy points 1,296 Location France Activity points 1,971 Re: poly phase filters Hello, They are mainly used as channel filter in combination with quadrature mixer to filter the image signal in Receiver and generate I and Q signal. Hereafter you can find some references on this issue: "CMOS mixers and polyphase filters for large image rejection" from Behbahani, F.; Kishigami, Y.; Leete, J.; Abidi, A.A. **broken link removed**
Re: poly phase filters Hello, They are mainly used as channel filter in combination with quadrature mixer to filter the image signal in Receiver and generate I and Q signal. Hereafter you can find some references on this issue: "CMOS mixers and polyphase filters for large image rejection" from Behbahani, F.; Kishigami, Y.; Leete, J.; Abidi, A.A. **broken link removed**
Apr 24, 2008 #9 jecyhale Advanced Member level 1 Joined Feb 19, 2008 Messages 401 Helped 54 Reputation 108 Reaction score 8 Trophy points 1,298 Location China Activity points 3,001 Re: poly phase filters drabos said: What is the main role of the polyphase filters in RF transceivers? Click to expand... I think it is image frequency rejection.
Re: poly phase filters drabos said: What is the main role of the polyphase filters in RF transceivers? Click to expand... I think it is image frequency rejection.