Printed circuit board cable clip for signal sensitive applications
Technologies and implementations for a clip to connect coaxial cables onto a printed circuit board assembly (PCBA) is disclosed. The technologies and implementations facilitate improved signal integrity from the cable to various components of the PCBA. Additionally, the technologies and implementations help facilitate management of mechanical variations during connection of the coaxial cable.
1. A printed circuit board assembly (PCBA) for inclusion in a wearable cardioverter defibrillator (WCD), the PCBA comprising:
a cable connecting clip disposed on the PCBA, the connecting cable clip comprising:
a channel configured to receive an electrocardiogram (ECG) cable being of a predetermined structure, the channel having a shape to substantially fit the ECG cable;
a first flange and a second flange disposed on opposite sides of the channel, the first flange and the second flange configured to guide the ECG cable into the channel; and
a connecting pad disposed on an end of the channel, the connecting pad configured to couple a conductive layer of the ECG cable to the cable connecting clip to communicatively couple the ECG cable with the WCD.
2. The PCBA of claim 1 , wherein the channel comprises a thermal mechanical compensating structure.
3. The PCBA of claim 2 , wherein the thermal mechanical compensating structure comprises a slot, the slot having a predetermined dimension to compensate for thermal mechanical changes of the cable connecting clip.
4. The PCBA of claim 1 , wherein the first flange and the second flange comprise the first flange and the second flange forming a substantially “V” type shape to guide the ECG cable into the channel.
5. The PCBA of claim 1 , wherein the connecting pad comprises a thermal conductivity control path.
6. The PCBA of claim 5 , wherein the thermal conductivity control path comprises a neck section between the connecting pad and the channel.
7. The PCBA of claim 1 , wherein the ECG cable comprises a center conductor, a first insulating layer, an inner shield layer, a second insulating layer, an outer shield layer, and a jacketing layer.
8. A wearable cardioverter defibrillator (WCD) comprising:
an electrocardiogram (ECG) cable having a signal conductor and a first conductive layer; and
a printed circuit board assembly comprising:
a substrate having a first conductive region and a second conductive region;
a first conductive clip having a pad section, a saddle section, and a neck section between the pad section and the saddle section, the neck section being narrower than the pad section and the saddle section, wherein:
a first portion of the ECG cable is disposed in the saddle section of the first conductive clip;
a portion of the first conductive layer of the ECG cable being soldered to the saddle section of the first conductive clip, the pad section of the first conductive clip being soldered to the first conductive region of the substrate to electrically couple the portion of the first conductive layer of the ECG cable to the first conductive region of the substrate, and
the signal conductor of the ECG cable being soldered to the second conductive region of the substrate.
9. The WCD of claim 8 further comprising a second conductive clip having a pad section, a saddle section, and a neck section between the pad section and saddle section, wherein:
a second portion of the ECG cable is disposed in the saddle section of the second conductive clip,
the ECG cable comprises a second conductive layer, wherein a portion of the second conductive layer of the ECG cable being soldered to the saddle section of the second conductive clip, and
the pad section of the second conductive clip being soldered to the second conductive region of the substrate to electrically couple the portion of the second conductive layer of the ECG cable to the second conductive region of the substrate.