RF cable connection to board
in [Design]
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From: Grumps on 9 Jun 2010 10:22 Hi How do you calculate loss due to a soldered coax cable direct to the board? I have an RG316 cable with SMA connector on one end. But I'm trying to decide if it is best to terminate both ends with RF connectors and then plug this assembly into the board, or just to solder the wire to the board (seems to be common practise with wireless routers). Ta.
From: BlindBaby on 9 Jun 2010 10:39 On Wed, 9 Jun 2010 15:22:21 +0100, "Grumps" <grumps(a)nothere.com> wrote: >Hi > >How do you calculate loss due to a soldered coax cable direct to the board? > >I have an RG316 cable with SMA connector on one end. But I'm trying to >decide if it is best to terminate both ends with RF connectors and then plug >this assembly into the board, or just to solder the wire to the board (seems >to be common practise with wireless routers). > >Ta. > The cable interconnect is more expensive, but far more serviceable. I thought that typical loss figures came from their (each connector) data sheets.
From: Jeroen Belleman on 9 Jun 2010 11:36 Grumps wrote: > Hi > > How do you calculate loss due to a soldered coax cable direct to the board? > > I have an RG316 cable with SMA connector on one end. But I'm trying to > decide if it is best to terminate both ends with RF connectors and then plug > this assembly into the board, or just to solder the wire to the board (seems > to be common practise with wireless routers). Seems to me the relevant issues are cost and convenience. The difference in loss hardly matters and could well be of either sign. And RG316 is lossy stuff anyway. Jeroen Belleman
From: Grumps on 9 Jun 2010 11:37 "BlindBaby" <BlindMelonChitlin(a)wellnevergetthatonethealbumcover.org> wrote in message news:da9v061fn54a7i95vem9lerdlhqjeegtgl(a)4ax.com... > On Wed, 9 Jun 2010 15:22:21 +0100, "Grumps" <grumps(a)nothere.com> wrote: > >>Hi >> >>How do you calculate loss due to a soldered coax cable direct to the >>board? >> >>I have an RG316 cable with SMA connector on one end. But I'm trying to >>decide if it is best to terminate both ends with RF connectors and then >>plug >>this assembly into the board, or just to solder the wire to the board >>(seems >>to be common practise with wireless routers). >> >>Ta. >> > The cable interconnect is more expensive, but far more serviceable. > > I thought that typical loss figures came from their (each connector) > data sheets. For the connectors they do. I was wondering about losses where the cable is soldered directly to the board.
From: Grumps on 9 Jun 2010 11:42
"Jeroen Belleman" <jeroen(a)nospam.please> wrote in message news:huocd7$l5i$1(a)speranza.aioe.org... > Grumps wrote: >> Hi >> >> How do you calculate loss due to a soldered coax cable direct to the >> board? >> >> I have an RG316 cable with SMA connector on one end. But I'm trying to >> decide if it is best to terminate both ends with RF connectors and then >> plug this assembly into the board, or just to solder the wire to the >> board (seems to be common practise with wireless routers). > > Seems to me the relevant issues are cost and convenience. > The difference in loss hardly matters and could well be of > either sign. And RG316 is lossy stuff anyway. Thanks. It's much cheaper to solder directly than use another connector pair. Labor costs are low where this is going to be produced. Can you suggest another (flexible) cable that is good at 5GHz, and a compatible SMA? I found some RG316 that had about 2.5dB/m attenuation at 5gig. |