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Quadband-ideas: Epcos M034F is also D1016
author Mychaela Falconia <falcon@freecalypso.org>
date Wed, 29 Jan 2020 23:59:50 +0000
parents 3799892b1a79
children
comparison
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28:3799892b1a79 29:6d7486db31cb
27 knowledge gained from examination of this obscure historically-made modem module 27 knowledge gained from examination of this obscure historically-made modem module
28 (both physical PCB reverse eng and evaluation of its RF performance with our 28 (both physical PCB reverse eng and evaluation of its RF performance with our
29 CMU200 instrument) has given us the necessary confidence boost with this 29 CMU200 instrument) has given us the necessary confidence boost with this
30 particular way of implementing a quadband GSM MS. 30 particular way of implementing a quadband GSM MS.
31 31
32 Epcos M034F 32 Epcos M034F aka D1016
33 =========== 33 =====================
34 34
35 TI's Leonardo+ and E-Sample boards used a magic component made by Epcos (the 35 TI's Leonardo+ and E-Sample boards used a magic component made by Epcos (the
36 canonical SAW filter manufacturer during that era) that was called M034 or M034F 36 canonical SAW filter manufacturer during that era) that was called M034 or M034F
37 at the time of TI's designs in question. Epcos later gave it a completely 37 at the time of TI's designs in question. However, the same component is also
38 different name when they released it into volume production, thus the name that 38 known by a completely different name of Epcos D1016; this new D1016 name is the
39 is needed in order to buy this part and that is physically marked on the 39 only one under which this component can be bought for the purpose of building
40 component package bears to resemblance to M034 - but we will not be able to 40 new quadband FreeCalypso hw, and the physical markings on the component package
41 disclose this other name until we physically produce our first FreeCalypso 41 only say "EPCOS D1016", no mention of M034. We (FreeCalypso) have no idea as
42 hardware product with this quadband FEM in it, meaning until and unless someone 42 to how and why this component got two completely different names. Here is a
43 pays for it. 43 picture of the part:
44
45 https://www.freecalypso.org/members/falcon/pictures/Epcos_D1016.jpeg
44 46
45 The component in question is an integrated quadband FEM (front end module), 47 The component in question is an integrated quadband FEM (front end module),
46 integrating the antenna switch and SAW filters in one component package, with a 48 integrating the antenna switch and SAW filters in one component package, with a
47 special twist. The special twist is that even though there are 4 separate Rx 49 special twist. The special twist is that even though there are 4 separate Rx
48 band SAW filters inside that M034 "chip" module, corresponding to its advertised 50 band SAW filters inside that M034 "chip" module, corresponding to its advertised