Are you (ADI) planning on publishing more documentation on how you designed the signal chain for the XUD1A board? What requirements you had and why you picked the specific components?
We are looking to narrow the bandwidth by changing some of the filters. On the XUD1A board are 3 Mini-Circuits filters which are fairly inexpensive, but at the RF port is placed a Knowles BPF which is more than 10x as expensive as the Mini-Circuits BPF next to the mixer. Is it the pass band requirements (X-Band is 8-12 GHz) that drives the RF filter selection and/or losses, signal power, or some other quality?
Can you elaborate so we are not missing a spec or quality?