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SFA series active and SFP series passive frequency multipliers are GaAs Schottky beamlead diode or MMIC device based multipliers. The multipliers employ broadband circuitry design to offer continuous frequency coverage for up to full waveguide band operations. The standard models are offered in five common waveguide bands to cover the frequency range from 26.5 to 110 GHz. These multipliers are designed and constructed with integrated filters to allow the desired harmonic output and suppress unwanted components. In addition, the waveguide output interface filters out the fundamental and lower frequency components naturally, which guarantees the excellent input and output signal isolation. While full band or broad models offer moderate output power, higher output power and narrow bandwidth models are available as custom designs.
There is no external bias required for passive models, while +10.0 Vdc is required for all active models.
SFB series balanced mixers and SFU series upconverters are GaAs Schottky beamlead diode based devices. These devices are offered in seven common waveguide bands to cover the frequency range from 18 to 110 GHz.
The catalog models employ broadband circuitry and balanced structure to offer low conversion loss and harmonic products for full waveguide band and extremely broad IF bandwidth operations. In addition, external biased models are offered when only starved LO power is available at upper waveguide bands.
While catalog models focus on broader bandwidth operation for the most applications, custom designed models are optimized to meet customers’ specific applications needs.
SFD series amplitude detectors are GaAs Schottky beamlead diode based detectors with various RF and DC connector options to suit many different applications. Based on proprietary circuitry design and diode selection, these detectors are zero biased and exhibit high sensitivity and extreme flat output characteristics. The frequency coverage of the detectors offered are from 18 to 110 GHz. The standard models are designed to have 1 MHz video bandwidth and 1 MΩ video output impedance and are capable of handling the maximum RF input power up to + 20 dBm.
These detectors are square root detectors mainly used for small signal detections.
Quadrature mixers are also known as I/Q mixers. SFQ series quadrature mixers are GaAs Schottky beamlead diode or MMIC based mixers. These mixers are offered in seven common waveguide bands in the frequency range of 18 to 110 GHz. Since the IF port of the mixers is DC coupled, the mixers can be used as phase detectors. In addition, these mixers are readily configured as image rejection mixers or single sideband modulators by adding IF quadratrue coupler.
The typical LO to RF port isolation of these mixers are 30 dB, which is high enough for most applica-tions without the requirement of additional port filtering. The catalog models are designed for narrow bandwidth operations to address industry focused frequencies. While catalog models focus on specific operation frequencies and package styles, custom designed models are designed and optimized to meet customers’ unique applications. Subharmonically pumped quadrature mixers are available per request.
FREQUENCY CONVERTERS
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When the IF frequency is used as pumping source, the frequency converters become single side band modulators. These modulators are also known as single side band up-converters if near RF frequency is used as LO pumping source. SFM series single side band modulators are GaAs Schottky beamlead diode or MMIC based modulators. These modulators are offered in seven common waveguide bands in the frequency range from 18 to 110 GHz. The IF quadrature hybrid is not included in these modulators. Instead, the separate I and Q ports are provided. Thus, either an external IF quad-rature hybrid or two IF orthogonal, equal amplitude signals are required in order to produce a single side band signal. The typical image rejection of these modulators is 20 dB. The catalog models are designed for narrow bandwidth operations to address industry focused frequencies. While the fo-cus of the catalog models is on specific operation frequencies and package styles, custom designed models are available to meet customers’ unique application needs.
SFH series balanced harmonic mixers are GaAs Schottky beamlead diode based mixers. The mixers employ broadband circuitry and balanced struc-ture to offer low conversion loss and continuous frequency coverage for up to full waveguide band operations. These mixers are offered in seven com-mon waveguide bands to cover the frequency range from 18 to 110 GHz. Unlike waveguide harmonic mixers (STH series), these mixers possess an integrated frequency diplexer internally so that the RF, LO and IF ports are separately configured. This feature allows a convenient connection ability when used with spectrum analyzer models without built-in diplexers, such as the models offered by Agilent Technologies.
SFS series subharmonically pumped mixers are GaAs Schottky beamlead diode and MMIC based mixers. The subharmonically pumped mixers are widely used in many communication systems where superior harmonic and spurious performance are concerned. In addition, these mixers have extremely low LO signal leakage at RF port. Furthermore, the LO frequency at the half of the RF frequency reduces the system cost tremendously.
The subharmonically pumped mixers are offered in seven common waveguide bands to cover the frequency range from 18 to 110 GHz. The catalog models employ broadband circuitry and balanced structure to offer low conversion loss and harmonics products for near the full waveguide band oper-ation. The typical instantaneous RF bandwidth of these mixers are 75% of the waveguide bands. Although the non biased version is the baseline design, externally biased option is available upon request. While the catalog models’ focus is on broader bandwidth operation for the general applications, narrow bandwidth custom models are optimized to meet customers’ specific needs.
SFV series subharmonically pumped up-converters are GaAs Schottky beamlead diode and MMIC based mixers. The subharmonically pumped up-converters are widely used in many communication systems where superior harmonic and spurious performance are concerned. In addition, these up-converters have extremely low LO signal leakage at RF port. Furthermore, the LO frequency at the half of the RF frequency reduces the system cost tremendously.
The subharmonically pumped up-converters are offered in seven common waveguide bands to cover the frequency range from 18 to 110 GHz. The catalog models employ broadband circuitry and balanced structure to offer low conversion loss and harmonics products for close to the full waveguide band operation. The typical instantaneous RF bandwidth of these up-converters are 75% of the bandwidth of waveguide bands. Although non biased version is the baseline design, externally biased option is available upon request. While catalog models’ focus is on broader bandwidth operation for the general applications, narrow bandwidth custom designed models are optimized to meet customers’ specific applications needs.
