Which is better, superheterodyne receiver or super regenerative receiver module

By sdga:NiceRF Wireless Technology Co., Ltd

Superheterodyne and super regenerative receivier modules has a wide range of applications, and is often used in electric door controllers, retractable door control, wireless security alarms and other fields. When it comes to product selection, many people are hesitant to choose a superheterodyne receiver module or a super regenerative module. For this issue, this article will make a comparison chart of the advantages and disadvantages, so that everyone knows at a glance which is the best super heterodyne or super regenerative receivier module, and what is the difference between the two.


1. The principle of superheterodyne circuit

The signal received from the antenna is amplified by the high-frequency amplifier (see tuning amplifier), and the signal generated by the local oscillator is added to the mixer for frequency conversion to obtain the intermediate frequency signal, which is then amplified by the intermediate frequency, detected and amplified by the low frequency, and then sent to the user. The working frequency range of the receiver is often very wide. When receiving input signals of different frequencies, the method of changing the local oscillation frequency f1 can be used to keep the mixed intermediate frequency fi at a fixed value.

Block diagram of superheterodyne receiver

Block diagram of superheterodyne receiver


2. The principle of super regenerative circuit

The super regenerative demodulation circuit is also called the super regenerative detection circuit, which is actually a regenerative detection circuit that works under intermittent oscillation. Generally, the sensitivity of the regenerative detector circuit is very high when it works in the mid-band, so it is often used to make a simple transistor radio. For wireless remote control or communication equipment working in the short-wave band, the sensitivity and stability of the regenerative detection do not meet the requirements. However, the super regenerative detector has high sensitivity in the short-wave band, and the amplification rate can reach hundreds of thousands of times when receiving weak signals.

Therefore, for simple wireless remote control communication devices (such as anti-theft devices) that require simple circuits and high sensitivity, but do not require high selectivity and signal-to-noise ratio, super regenerative detection circuits are still of practical value. Generally, the sensitivity of super regenerative receivers is about -85~95DBM, with many components, poor stability and complicated processing.

Super regenerative internal circuit principle

Super regenerative internal circuit principle


The difference between superheterodyne and super regenerative receiver modules

The following is a comparison between the superheterodyne receiver module of NiceRF Wireless and the super regenerative receiver module of other companies.

G-NiceRFOther company
Superheterodyne receiver module SRX882Super regenerative receiver module
Superheterodyne receiver moduleSuper regenerative receiver module
Strong anti-interference abilityPoor anti-interference ability
Strong temperature adaptabilityThe frequency is greatly affected by temperature drift
High receiving sensitivityLow receiving sensitivity
Able to pass FCC, CE certificationFrequency pollution, can not pass the certification
Good performance, stable and reliable workLow price, poor stability


  1. The superheterodyne receiver module has strong anti-interference ability, strong temperature adaptability, high receiving sensitivity, good performance, stable and reliable work, low local oscillator radiation, no secondary radiation, good performance indicators, and easy to pass FCC, CE, etc. Standard monitoring is in line with industrial use specifications, but the cost is relatively high compared to the superregenerative receiver module.
  2. The super regenerative receiver module has the advantages of simple circuit and low cost, so it is widely used. The disadvantage is that the frequency is greatly affected by temperature drift, the receiving sensitivity is low, the anti-interference ability is poor, the stability is poor, there is frequency pollution, and it cannot pass the certification.

Through the above detailed introduction of the superheterodyne receiver module and the super regenerative receiver module, as well as the concise and clear comparison chart, I believe many people have been able to judge which superheterodyne or super regenerative receiver module is better. The superheterodyne receiver module is better than the super regenerative receiver module in terms of stable performance, receiver sensitivity and temperature adaptability, so it is recommended to choose the superheterodyne receiver module.

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