Power Sensor Spans DC To 110 GHz
Model R&S NRP-Z58 is a broadband power sensor that enables power measurements over the continuous frequency range of DC to 110 GHz. The thermal sensor supports a dynamic range from −35 to +20 dBm (55 dB) and is capable of more than 300 measurements per second for production testing. With its integral Universal Serial Bus (USB) connector, the sensor can be connected directly to a personal computer (PC). It is also designed for use with any of the company’s signal generators, spectrum analyzers, or network analyzers. The sensor offers linearity of 0.01 dB and includes a ball-bearing 1-mm coaxial plug connector for ease of connection to other test equipment. The sensor’s high frequency range makes it a suitable tool for analyzing commercial automotive applications— such as cruise-control and collisionwarning systems—at 77 GHz, as well as industrial and military radar systems at 94 GHz.
Phase Shifter Runs 18 To 40 GHz
Model 7929 is a digitally programmable phase shifter suitable for military airborne systems operating from 18 to 40 GHz. Over that frequency range, it provides a full 360-deg. phase shift with accuracy of ±15 deg. and maximum switching time of better than 500 ns. It uses 10-b transistor-transistorlogic (TTL) control to adjust phase, boasting resolution as fine as 0.35 deg. with guaranteed monotonic phase control. The phase shifter handles signals to +20 dBm without performance degradation, with insertion loss specified at 15 dB but more typically at 13 dB across the wide frequency range. The component achieves typical input second-order and third-order intercept points of +60 and +35 dBm, respectively. The phase shifter is supplied in a hermetic package measuring 1.95 × 1.67 × 0.52 in. and designed for an operating temperature range of −54 to +95ºC.
Amplifier Cuts Noise From 5 To 11 GHz
Model CMD132P3 is a low-noise amplifier (LNA) that provides outstanding RF/microwave performance from 5 to 11 GHz. This offering is suitable for C- and X-band pointto- point and point-to-multipoint radios, as well as in military and space equipment. The LNA exhibits a low noise figure of 1.3 dB across its frequency range, with better than 20-dB gain and an output 1-dB compression point of +10 dBm. It provides +13-dBm saturated output power and a third-order intercept point of +22 dBm. Input return loss is typically 10 dB and output return loss is typically 15 dB. Housed in a RoHS-compliant, 3 × 3 mm QFN plastic surface-mount package, the amplifier operates with a single voltage supply of +3.6 VDC and only 30 mA current. The 50-Ω matched design does not require external DC blocks or matching components, and can be installed with a minimal number of external components other than bypass capacitors.
Power Amplifier Drives 6 To 18 GHz
Model BHE69189-20 is a solid-state Class AB linear power amplifier that provides output levels in excess of 20 W from 6 to 18 GHz. Designed to work into a 2.0:1 load VSWR, this rugged amplifier offers 25-W typical saturated output power; it boasts better than 41 dB (and typically 45-dB) gain with an output level of 20 W. The RF input overdrive level occurs at +10 dBm. Second harmonics are −15 dBc, while thirdharmonic levels are at −30 dBc. Spurious output levels are at −60 dBc or less. Using a 5-V transistor-transistor-logic (TTL) signal, the amplifier can be enabled or disabled in 2 microseconds or less. The rack-mountable amplifier measures 19 × 22 × 3.5 in. and weighs 40 lbs. IIt is supplied with Type-N female coaxial connectors, but available with SMA or TNC connectors as options.
GaN Amp Drives Satcom Systems
Model XTSLIN- 100X-B1 is a power amplifier with block upconverter (BUC) based on gallium-nitride (GaN) device technology. The amplifier delivers 100 W linear output power from a compact housing measuring just 6.8 × 10.5 × 17.0 in. The amplifier provides efficient operation for single- or multicarrier tactical satcom systems. With its BUC, it handles input signals from 950 to 1450 MHz and provides output signals from 7.9 to 8.4 GHz, using a 6950- MHz local-oscillator (LO) signal. The unit is available with 60 to 68 dB factoryconfigurable smallsignal gain with ±0.5- dB or better gain variation over any 400-MHz operating frequency segment.
Amplifiers Power Systems To 20 GHz
A pair of transistor amplifiers from TriQuint Semiconductor serve commercial and military communications applications through 20 GHz. Model TGA2579-FL is a high-gain amplifier supplied in a 14-pin flange package. It delivers 32-dB small-signal gain with +44-dBm saturated output power from 13.75 to 15.35 GHz. It features a typical third-order intercept point of +48 dBm and 30% power-added efficiency. The amplifier incorporates low-loss groundsignal- ground (GSG) transitions and is supplied in a lead-free and RoHS-compliant housing. Designed for operating temperatures from −40 to +85ºC, it runs on drain voltage of +25 VDC, quiescent drain current of 1 A, and typical gate voltage of −3.4 VDC. The more broadband model TGM2543-SM is a combination limiting amplifier and low-noise amplifier (LNA) that can survive CW input levels to 4 W from 4 to 20 GHz. This GaAs device varies gain by means of its two gates, with typical electrical requirements that include drain voltage of +5 VDC, drain current of 100 mA, and voltage of −0.6 and +1.3 VDC at the two gates.
Pads Program Levels From DC To 18 GHz
Programmable attenuators in the PA series from RLC Electronics are available in coaxial housings for applications from DC to 18 GHz. Two basic models provide total attenuation ranges of 0 to 15 dB in 1-dB steps (model PA124) and 0 to 70 dB in 10-dB steps (model PA- 125). For example, PA-125 models can be specified for frequency ranges as wide as DC to 18 GHz with maximum insertion loss of 0.5 dB from DC to 5 GHz; 0.8 dB from 5.0 to 12.4 GHz; and 1.0 dB from 12.4 to 18.0 GHz. These attenuators exhibit maximum VSWR of 1.50:1 from DC to 5 GHz; 1.70:1 from 5.0 to 12.4 GHz; and 1.80:1 from 12.4 to 18.0 GHz. The rugged PA-125 attenuators are supplied with SMA female connectors. They use attenuation cells of 10, 20, and 40 dB to achieve the values of 10, 20, 30, 40, 50, 60, and 70 dB, with accuracy of at least ±1 dB per cell. Both types are available with TTL drivers, failsafe or latching operation, and +12- or +28-VDC coils, and in a choice of frequency ranges.
Combiner/Divider Goes Eight Ways
Model D5829 is an eight-way power combiner/divider rated for 400 W CW power from 20 to 500 MHz. It features at least 20-dB isolation between ports, with maximum VSWR of 1.40:1. The insertion loss is 0.75 dB or less across the full frequency range. Phase balance is ±5 deg. or better, while amplitude balance is ±0.3 dB or better. The rugged power combiner/divider measures 12.00 × 7.75 × 2.25 in. with choice of Type-N female connectors, SMA connectors, or a combination of the two connector types.