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Broadband Balanced Mixers

Features

  • 26.5-220 GHz operating frequency
  • 6 - 12 dB conversion losses
  • Good flatness
  • Up to 22 GHz IF
  • Up to 40 dB balance
  • Required LO power 1…20 mW
  • VSWR 2:1 (typ
Applications

 

 

  • Low noise Receivers of mm-wave signal
  • Down converters
  • Instruments and test equipment
Description

    Broadband balanced mixers are the key part of mm-wave receivers, down converters numerous instruments and test equipment. Standard line of ELVA-1’s balanced mixers BM-XX/LO/IF/Nseries provide low conversion losses and low noise figure of the devices within wide frequency band from 26,5GHz to 220 GHz.

      The BM-XX/LO/IF/Nmixers are based on Ga-As Schottky diodes of ELVA-1 own manufacturing. They provide their features within whole waveguide band of RF and LO frequencies. Using original design of the mixer allows reaching IF up to 22 GHz and LO/IF isolation up to 30…40 dB. Standard mixers demand about 10 mW LO power and work without external biasing.

      There are Balanced Mixers producing on custom design together with standard product line. They can work with lower LO power levels at 1-2 mW and higher IF frequencies up to 22 GHz. Low LO power Balanced mixers are biased and have the fourth coaxial input.

     Harmonic mixers are also available for producing. The harmonic mixers have a bit worse conversion losses then mixers working at fundamental harmonic. The advantage of the harmonic mixers is they can be used in the receivers which do not have a LO source with as high operating frequency as RF signal.

     To provide lower noise figure and to have higher RF to IF gain there are balanced mixers BMA-X/LO/IF series with built-in IF pre-amplifier.

Two main designs of the balanced mixers: axed and angle ones, are shown in the pictures above.

Typical specifications of BM-XX/LO/IF/N balanced mixers is given below. 

Specifications

MODEL NUMBER BM-28/XX BM-22/XX BM-19/XX BM-15/XX BM-12/XX BM-10/XX BM-08/XX BM-06/XX
Frequency Range, GHz 26.5-40 33-50 40-60 50-75 60-90 75-110 90-140 110-170
Input waveguide WR28 WR22 WR19 WR15 WR12 WR10 WR8 WR6
Waveguide Flange UG-599/U UG-383/U UG-383/U-M UG-385/U-M UG-387/U-M UG-387/U-M UG-387/U-M UG-387/U-M
Conversion losses at RF LO over full waveguide band, IF: 0.01-8 GHz, dB (max) 8 8 8,5 9 9,5 10 --- ---
Conversion losses at fixed LO,  IF: 0.01-8 GHz, dB (max) 6.0 7 7 7,5 7,5 8 8 8,5
Conversion losses at fixed LO,   IF: 8-18 GHz, dB (max) 7 IF <13.5GHz 7.5 IF <17GHz 7,5 8 8 8,5 9 9

 

 

Notes:

How to order

Specify Model Number BM-XX/LO/IF/N/A/–Т, where

X   – number of waveguide standard (Ex. 10 for WR-10 and 06 for WR-06)

LO - LO frequency (or operating range), F- if full band

IF – intermediate frequency range 

N  – number of operating harmonic, nothing if N=1

A  – with built-in power amplifier at output, nothing if without output power amplifier 

B  – requires bias, nothing if no bias

Examples

BM-10/F/4 (W-band mixer, LO= 75-110 GHz, IF= 4 GHz

BM-06/142/6-18 (D-band mixer, LO= 142 GHz, IF= 6-18 GHz

BM-10/12-18/1/6 (W-band mixer, LO= 12-18 GHz, IF= 1 GHz, harmonic number 6

BM-10/94/0.5-1.5/A (W-band mixer, LO= 94 GHz, IF= 0.5-1.5 GHz, harmonic number 1, with built-in output power amplifier

Delivery time 6-8 weeks for standard models. Custom designed mixers are delivered within 12 weeks ARO.

All ELVA-1 balanced mixers are warranted by the manufacturer for one year after receipt.