RF design book suggestions
RF design book suggestions
(OP)
Hello all,
I was just beginning a project which will require me to build and specify an antenna for low frequency RFID (134 kHz). I've designed a module to handle the RFID communications, and have built working prototypes using a design template from the manufacturer of the chip I'm using. However, I have no experience designing RF antennas. I'm hoping some of you can suggest some good RF design books.
Thanks a bunch!
I was just beginning a project which will require me to build and specify an antenna for low frequency RFID (134 kHz). I've designed a module to handle the RFID communications, and have built working prototypes using a design template from the manufacturer of the chip I'm using. However, I have no experience designing RF antennas. I'm hoping some of you can suggest some good RF design books.
Thanks a bunch!





RE: RF design book suggestions
RE: RF design book suggestions
RE: RF design book suggestions
By Henry Jasik
McGraw-Hill Book company
RE: RF design book suggestions
RE: RF design book suggestions
RE: RF design book suggestions
RE: RF design book suggestions
All of my work with RFID is based on chips from Texas Instruments. While they do have good documentation on the use of their chips, I still thought I needed more antenna design knowledge.
Anyway... that's besides the point of your question. I found Texas Instruments to be a valuable source of information and design examples (using their chips, of course).
RE: RF design book suggestions
Due to range and wavelength requirements at that low operating frequency, any "antenna" will of necessity be operating in the very near field, and a different approach is needed. I doubt if classical antenna theory from books will help very much, because this is not a normal antenna application.
The texts mainly concern the design of antennas for launching and receiving signals into free space over very long distances.
A better way might be a very open inductive pickup loop made to enclose as large an area as possible consisting of several turns, and tuned broadly to resonance. As a rule of thumb, the bigger it is the more energy it will intercept. The tuned Q should be high enough to increase sensitivity, but not so high it becomes easily detuned by surrounding objects. It is just a length of multicore cable formed into a loop, with the individual wires joined in series.
For receiving low frequency signals, the most compact method possible is a ferrite rod antenna, again broadly tuned to resonance.
Some experimentation and ingenuity may be required, but a workable system should not present too many difficulties.