Timeline for Switching between two frequency BWs at the transmitter
Current License: CC BY-SA 4.0
3 events
| when toggle format | what | by | license | comment | |
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| Jan 31, 2023 at 19:29 | comment | added | PCBCrew Engineer | If your MAX-xx transmitter chip has ~500 ohms output impedance, it's probably not intended to use with antenna. You may need a power amplifier chip. With this switch chip put amp between RFCommon and Antenna. To get specific help, you would better to post your circuit details. With general question, only general answer can be get. | |
| Jan 31, 2023 at 17:48 | comment | added | kellogs | Could be the way forward! One thing I do not like about it - 12 pin QFN - not that easy for me to solder correctly each time. Price could be a bit lower too. Main thing is - how do I use it ? the MAX radio transmitter chip has some 500-ish ohm output impedance, i guess I would have to ditch current PCB trace antenna, adapt the output to 50 ohm antennas and have two of those, external, one for each BW ? | |
| Jan 31, 2023 at 2:01 | history | answered | PCBCrew Engineer | CC BY-SA 4.0 |