Feb 20, 2012 #1 To increase the range of radio communication try any one or combination of the following: 1. DIY Cheap IR Reflector for a Remote Control: This is a really easy hack for a remote control that can boost its signal power by creating a reflector behind the IR Emmiter. 5. The receiver this way can differentiate from a pulsed signal and a steady one by using a simple AC coupled amplifier. Improve transmitter matching to transmitting antenna to increase power transfer to antenna. The best approach to increasing sensitivity is to use the proper IR bandpass filter in front of the photodiode, and a photodiode amplifier. See the attached pdf for amplifier schemes. The feedback loop is used to create the hysteresis, the loop size being defined by the value of R2. 2. Use higher gain transmitting and/or receiving antenna. The value of R1 is used to pull up the voltage from the IR reciever to increase its sensitivity in general. I got the idea for this when I was thinking about a way to… Standard remote controllers use 38-40kHz pulses. I’ll include an example of a circuit we use as an OP amp to increase a standard IR receiver just two legs to increase range and sensitivity and also get the analog output along with the digital. K. kimbear Member. Thread starter kimbear; Start date Feb 20, 2012; Status Not open for further replies. 3. IR receiver GND Circuit μC R 1 + VS GND Transmitter with TSALxxxx V V O 17170-11 OUT R 1 and C 1 recommended to reduce supply ripple for V S < 2.8 V. ... the sensitivity of the receiver is reduced to insure that no spurious pulses are present at the output. This can help to increased the signal and sensitivity strength. Increase transmitter power output. the receiver … Wiring diagram to control LEDs with IR remote, receiver and Arduino. The other option is to increase the sensitivity of the receiver. The usual operating current of 3 and 5 mm LEDs is around 20 mA. Increase receiver sensitivity. The IR sensors are usually build that way, that they get signal from as wide range as possible, also using walls, ceiling etc. The ratio between R3 and R4 sets the comparison voltage. I used some 470 Ω resistors to limit the current going through the LEDs. RECEIVER SENSITIVITY / NOISE RECEIVER SENSITIVITY Sensitivity in a receiver is normally taken as the minimum input signa l (S min ) required to produce a specified output signal having a specified signal-to-noise (S/N) ratio and is defined as the minimum signal-to-noise ratio times the mean noise power, se e equation [1]. The LEDs are connected to pins 2 to 5 of the Arduino and the output of the IR receiver to pin 6. And it Definitely works. Some examples of … You can also get an Ir network extender and feed the output into the reader. In theory, increasing the sensitivity by 6dB will give twice the receiving distance, but in fact, it is not easy for a user to change the sensitivity. 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