Data Sheet

21 | P a g e Espressif Systems Oct 12, 2013
ESP8266 802.11bgn Smart Device
12 Radio
The ESP8266 radio consists of the following main blocks:
 2.4GHz receiver
 2.4GHz transmitter
 High speed clock generators and crystal oscillator
 Real time clock
 Bias and regulators
 Power management
12.1 Channel Frequencies
The RF transceiver supports the following channels according to the IEEE802.11bgn standards.
Channel
No
Frequency
(MHz)
Channel
No
Frequency
(MHz)
1
2412
8
2447
2
2417
9
2452
3
2422
10
2457
4
2427
11
2462
5
2432
12
2467
6
2437
13
2472
7
2442
14
2484
12.2 2.4GHz Receiver
The 2.4GHz receiver downconverts the RF signal to quadrature baseband signals and converts
them to the digital domain with 2 high resolution high speed ADCs. To adapt to varying signal
channel conditions, RF filters, automatic gain control, DC offset cancelation circuits and
baseband filters are integrated within the radio.