*1 Schottky detectors such as LTC5505-x may not be sensitive enough for your application. See below:
*2 Normally the input DC blocking capacitor is 1000 pF for this device.
*3 First check the printed antenna, to validate center frequency, gain, pattern, etc. Next, calculate or measure the received signal level at the required distance. Compare that level to the detector sensitivity graph shown on datasheet page 4. You may find that the received level is too weak for a Schottky detector. In that case, consider a more sensitive detector. For lowest current consumption at this frequency range, consider ADL5506 Log detector, ADL5501 RMS detector (linear in V/V), or LT5581 RMS detector (linear in dB). Other options exist but current consumption is increased.
*4 Schottky detectors will generally follow the envelope of the RF waveform. What is the modulation on the signal? For long-term storage of a Schottky detector peak envelope output value, an additional peak-hold circuit is needed, or a ADC with firmware to hold the peak value.