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RF mixers useful informations
The passive mixers are versatile and very useful components, they are suitable for other applications in addition to theirs classic, some of these applications are well known but others a little less. Here follows some little tips on how to best use them.
Balanced Modulator Demodulator DSB |
Balanced mixers and modulators are substantially equal, mixers are also used as audio modulators or demodulators provided that the IF port is DC coupled, in fact some years ago they were called also as balaced modulators (see VHF Commication magazine 2-96). | ![]() in the reverse mode as demodulator |
Phase detector | Applying two identical frequencies are identical to the RF and OL ports, in IF there will be d.c. voltage proportional to the phase difference of the two signals. This is obviously valid only for those mixers who have the IF port coupled in d.c.. The early synthesizers in the 60s had the phase comparator made by a balaced mixer. Some mixers have a positive polarity output other negative, eg. SBL-1 and SRA-1 have negative polarity with offset of 1mV. |
![]() relative phase between two signals |
PSK QPSK Modulator Demodulator |
In simple words we can say that two mixers, a 0° hybrid and a 90° hybrid can form a modulator or demodulator for digital signals, this happened for example at the beginning with the first GSM module. In this case, however, the bandwidth is limited to 10-15% of the mixer bandwdth. | ![]() |
Attenuator and Limiter |
By applying a signal to the LO port with RF output port it is possible, through the IF input port, make an attenuation with typical range of 3 - 40 dB. The same function is as limiter, pulse modulator, etc.. For example, the mixer SRA-1 and SBL-1 have the minimum attenuation at 3dB with 20 mA of bias. | ![]() |
For more informations see the manufacturers' catalogues about balanced mixers like: Merrimac, Ma-Com, Anzac, RHG, Mini-Circuits, etc… there are often available many application notes of considerable interest.
Suggestions on how to use passive mixers
Order code: | ADE-35 |
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RF mixer, 1600 - 3500 MHz, 7 dBm, SMD Mini-Circuits ADE-35 |
Conditions: | N- (The product is brand new but it comes from an old production) |
RF frequency: | 1600 - 3500 MHz |
LO frequency: | 1600 - 3500 MHz |
IF frequency: | dc - 1500 MHz |
LO power level: | 7 dBm |
Max. conversion loss: | 9.8 dB |
Operating temperature (°C): | -40 / +85 |
Mounting style: | SMD |
Mixer type: | double-balanced |
Order code: | EMA-220X |
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RF mixer, 1 - 1500 MHz, 17 dBm, plug-in M/A-COM EMA-220X |
Conditions: | N- (The product is brand new but it comes from an old production) |
RF frequency: | 1 - 1500 MHz |
LO frequency: | 1 - 1500 MHz |
IF frequency: | dc - 1000 MHz |
LO power level: | 17 dBm |
Operating temperature (°C): | -55 / +100 |
Mounting style: | plug-in |
Mixer type: | double-balanced |
Order code: | EMRS-1 |
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RF mixer, 0.5 - 500 MHz, 7 dBm, SMD M/A-COM EMRS-1 |
Conditions: | N- (The product is brand new but it comes from an old production) |
RF frequency: | 0.5 - 500 MHz |
LO frequency: | 0.5 - 500 MHz |
IF frequency: | dc - 500 MHz |
LO power level: | 7 dBm |
Max. conversion loss: | 8.5 dB |
Operating temperature (°C): | -55 / +100 |
Mounting style: | SMD |
Mixer type: | double-balanced |
Order code: | EMRS-2 |
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RF mixer, 5 - 1000 MHz, 7dBm, SMD M/A-COM EMRS-2 |
Conditions: | N- (The product is brand new but it comes from an old production) |
RF frequency: | 5 - 1000 MHz |
LO frequency: | 5 - 1000 MHz |
IF frequency: | dc - 1000 MHz |
LO power level: | 7 dBm |
Max. conversion loss: | 9.5 dB |
Operating temperature (°C): | -55 / +100 |
Mounting style: | SMD |
Mixer type: | double-balanced |
Order code: | EMRS-25MH |
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RF mixer, 5 - 2500 MHz, 13 dBm, SMD M/A-COM EMRS-25MH |
Conditions: | N- (The product is brand new but it comes from an old production) |
RF frequency: | 5 - 2500 MHz |
LO frequency: | 5 - 2500 MHz |
IF frequency: | 3 - 1500 MHz |
LO power level: | 13 dBm |
Max. conversion loss: | 9.8 dB |
Operating temperature (°C): | -40 / +85 |
Mounting style: | SMD |
Mixer type: | double-balanced |
Order code: | EMRS-42X |
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RF mixer, 5 - 1900 MHz, 7 dBm, SMD M/A-COM EMRS-42X |
Conditions: | N- (The product is brand new but it comes from an old production) |
RF frequency: | 5 - 1900 MHz |
LO frequency: | 5 - 1900 MHz |
IF frequency: | 5 - 1000 MHz |
LO power level: | 7 dBm |
Max. conversion loss: | 9.8 dB |
Operating temperature (°C): | -55 / +100 |
Mounting style: | SMD |
Mixer type: | double-balanced |
Order code: | EMRS-5 |
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RF mixer, 5 - 1500 MHz, 7 dBm, SMD M/A-COM EMRS-5 |
Conditions: | N- (The product is brand new but it comes from an old production) |
RF frequency: | 5 - 1500 MHz |
LO frequency: | 5 - 1500 MHz |
IF frequency: | dc - 1000 MHz |
LO power level: | 7 dBm |
Max. conversion loss: | 9.5 dB |
Operating temperature (°C): | -55 / +100 |
Mounting style: | SMD |
Mixer type: | double-balanced |
Order code: | EMT-3MH |
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RF mixer, 1 - 250 MHz, 13 dBm, plug-in M/A-COM EMT-3MH |
Conditions: | N- (The product is brand new but it comes from an old production) |
RF frequency: | 1 - 250 MHz |
LO frequency: | 1 - 250 MHz |
IF frequency: | dc - 250 MHz |
LO power level: | 13 dBm |
Max. conversion loss: | 8.5 dB |
Operating temperature (°C): | -55 / +100 |
Mounting style: | plug-in |
Mixer type: | double-balanced |
Order code: | EMT-4 |
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RF mixer, 5 - 1250 MHz, 7 dBm, plug-in M/A-COM EMT-4 |
Conditions: | N- (The product is brand new but it comes from an old production) |
RF frequency: | 5 - 1250 MHz |
LO frequency: | 5 - 1250 MHz |
IF frequency: | dc - 1250 MHz |
LO power level: | 7 dBm |
Max. conversion loss: | 8.5 dB |
Operating temperature (°C): | -55 / +100 |
Mounting style: | plug-in |
Mixer type: | double-balanced |
Order code: | EMT-5 |
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RF mixer, 5 - 1500 MHz, 7 dBm, plug-in M/A-COM EMT-5 |
Conditions: | N- (The product is brand new but it comes from an old production) |
RF frequency: | 5 - 1500 MHz |
LO frequency: | 5 - 1500 MHz |
IF frequency: | dc - 1000 MHz |
LO power level: | 7 dBm |
Max. conversion loss: | 9.5 dB |
Operating temperature (°C): | -55 / +100 |
Mounting style: | plug-in |
Mixer type: | double-balanced |
Order code: | ETUF-2MHSM |
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RF mixer, 50 - 1000 MHz, 13 dBm, plug-in M/A-COM ETUF-2MHSM |
Conditions: | N- (The product is brand new but it comes from an old production) |
RF frequency: | 50 - 1000 MHz |
LO frequency: | 50 - 1000 MHz |
IF frequency: | dc - 1000 MHz |
LO power level: | 13 dBm |
Max. conversion loss: | 9 dB |
Operating temperature (°C): | -55 / +100 |
Mounting style: | plug-in |
Mixer type: | double-balanced |
Order code: | GRA-1 |
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RF mixer, 5 - 500 MHz, 7 dBm, plug-in Mini-Circuits GRA-1 |
Conditions: | N- (The product is brand new but it comes from an old production) |
RF frequency: | 5 - 500 MHz |
LO frequency: | 5 - 500 MHz |
IF frequency: | dc - 500 MHz |
LO power level: | 7 dBm |
Max. conversion loss: | 8.5 dB |
Operating temperature (°C): | -55 / +100 |
Mounting style: | plug-in |
Mixer type: | double-balanced |
Order code: | HMC142C8 |
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RF mixer, 6 - 15 GHz, 15 dBm, SMD Hittite HMC142C8 |
Conditions: | N- (The product is brand new but it comes from an old production) |
RF frequency: | 6 - 15 GHz |
LO frequency: | 6 - 15 GHz |
IF frequency: | dc - 2 GHz |
LO power level: | 15 dBm |
Max. conversion loss: | 10 dB |
Operating temperature (°C): | -55 / +85 |
Mounting style: | SMD |
Mixer type: | double-balanced |
Order code: | HPF-505 |
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RF mixer, 1 - 500 MHz, 7 dBm, plug-in Mini-Circuits HPF-505 |
Conditions: | N- (The product is brand new but it comes from an old production) |
RF frequency: | 1 - 500 MHz |
LO frequency: | 1 - 500 MHz |
IF frequency: | dc - 500 MHz |
LO power level: | 7 dBm |
Max. conversion loss: | 8 dB |
Operating temperature (°C): | -55 / +100 |
Mounting style: | plug-in |
Mixer type: | double-balanced |
Order code: | HPF-505X |
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RF mixer, 10 - 1000 MHz, 7 dBm, plug-in Mini-Circuits HPF-505X |
Conditions: | N- (The product is brand new but it comes from an old production) |
RF frequency: | 10 - 1000 MHz |
LO frequency: | 10 - 1000 MHz |
IF frequency: | 5 - 500 MHz |
LO power level: | 7 dBm |
Max. conversion loss: | 8 dB |
Operating temperature (°C): | -55 / +100 |
Mounting style: | plug-in |
Mixer type: | double-balanced |