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Hello everybody
I'm looking for a 5,8 GHz RF receiver/RF front end (either will work). I need to be able to directly measure the output of the downmixer (see bullet 2 below)
The requirements are as follows:
-Input band: at least 5.725-5.875 GHz (the ISM band, some some of the 5 GHz WiFi and Wimax protocols also operate here). Wider is not a problem.
-The output of the downmixer (the IF) must be accessible on an external pin. Preferably with no filtering or amplification inbetween, but some is acceptable. However, the signal must not be demodulated or otherwise processed .
-If it is a baseband receiver, and there is a filter on the mixer output, the filter bandwodth must be at least 40 MHz
-Sensitivity figure of -95dBm for a bandwidth 1MHz. This is the same as the WiMax specification for 1 MHz signals.
Optional:
-Internal Local Oscillator for the downmixer. Due to the high operating frequency, having this would make things much easier.
- Low IF. I can design around the IF, but of course the lower it is, the easier the design is, as the EM effects are not as severe.
If the chip has a bunch of other bells and whistles or is even a transceiver, that is fine. I won't be using anything except the RX section
I've spent.... a LOT of hours trying to find a chip suitable for this. The best ones I've found are either unsuitable in one small aspect, or are obsolete.
Ones I've found that were mostly suitable, but had some disqualifying attribute:
-Richwave RTC6715. Sensitivity figure too low.
- Texas Instruments TRF2432 + TRF2436 (designed to work together). Obsolete, otherwise the best I've found. Neither Mouser or Digikey have stock, and Mouser hasn't answered my request for an alternate part.
- Maxim Integrated MAX2851 or MAX2852. Baseband receiver, which isn't a problem, but has an output filter on the IF with a maximum 20MHz upper corner frequency; I need at least 40 MHz.
I don't know if this is the suitable place to ask for something like this, but I'm at my wit's end about this.
I'm looking for a 5,8 GHz RF receiver/RF front end (either will work). I need to be able to directly measure the output of the downmixer (see bullet 2 below)
The requirements are as follows:
-Input band: at least 5.725-5.875 GHz (the ISM band, some some of the 5 GHz WiFi and Wimax protocols also operate here). Wider is not a problem.
-The output of the downmixer (the IF) must be accessible on an external pin. Preferably with no filtering or amplification inbetween, but some is acceptable. However, the signal must not be demodulated or otherwise processed .
-If it is a baseband receiver, and there is a filter on the mixer output, the filter bandwodth must be at least 40 MHz
-Sensitivity figure of -95dBm for a bandwidth 1MHz. This is the same as the WiMax specification for 1 MHz signals.
Optional:
-Internal Local Oscillator for the downmixer. Due to the high operating frequency, having this would make things much easier.
- Low IF. I can design around the IF, but of course the lower it is, the easier the design is, as the EM effects are not as severe.
If the chip has a bunch of other bells and whistles or is even a transceiver, that is fine. I won't be using anything except the RX section
I've spent.... a LOT of hours trying to find a chip suitable for this. The best ones I've found are either unsuitable in one small aspect, or are obsolete.
Ones I've found that were mostly suitable, but had some disqualifying attribute:
-Richwave RTC6715. Sensitivity figure too low.
- Texas Instruments TRF2432 + TRF2436 (designed to work together). Obsolete, otherwise the best I've found. Neither Mouser or Digikey have stock, and Mouser hasn't answered my request for an alternate part.
- Maxim Integrated MAX2851 or MAX2852. Baseband receiver, which isn't a problem, but has an output filter on the IF with a maximum 20MHz upper corner frequency; I need at least 40 MHz.
I don't know if this is the suitable place to ask for something like this, but I'm at my wit's end about this.
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