Hi, There are many questions (explicit and implicit) in your question. Focusing on the tx side only (since we are talking about band edge), the filters you are talking about are electromechanical. Do a wikipedia search on SAW filters and you will get a sense for what you are dealing with. There are many other factors involved in meeting band edge requirements and other filtering that is or can be performed, but, the expense is often in the electromechanical components.
Chuck On Sun, Oct 26, 2014 at 1:45 AM, That One Guy via Af <[email protected]> wrote: > with the changes in the 5ghz rules, it may force innovation in filtering > technology to bring cost down, assuming the innovators arent stuck in a > mindset of the only thing that would work is what there is. > > How do filters works? > > Are there electronically adjustable filters? > > Where does the cost come from on filters? It is not new technology, so > recovery of R&D on a new tech has long since past, what is it that drives > the cost up? Is it primarily a matter of it being something needed, so its > more valuable, or is it something in the physical properties of the filters > that drives up the cost? > > Can you filter electronically a transmitter using something along the same > lines of noise cancelling headphones > > -- > All parts should go together without forcing. You must remember that the > parts you are reassembling were disassembled by you. Therefore, if you > can't get them together again, there must be a reason. By all means, do not > use a hammer. -- IBM maintenance manual, 1925 >
