Low-Noise Amplifier Gains 1 to 2 GHz
Planar Monolithics Industries.
Amplifiers with low noise figure enable a receiver with sufficient sensitivity to capture low-level signals within their frequency range. As a candidate for broadband receivers in the 1-to-2-GHz frequency range, model PEC-53-12-10-15-SFF is a low-noise amplifier (LNA) that combines low noise figure of 0.7 dB with high minimum gain of 53 dB to help capture faint signals across that frequency range. The amplifier features gain flatness of +/-0.75 dB across the 1-GHz bandwidth. The unit provides minimum of +16 dBm output power at 1-dB compression. It exhibits input/output of 1.50:1 and draws 450 mA current from a voltage supply of +12 to +15 V dc. The amplifier measures 2.405 x 0.66 x 0.20 in. and is supplied with female SMA connectors. It is designed for operating temperatures from -55 to +85°C.
Planar Monolithics Industries, Inc., 7311-F Grove Rd., Frederick, MD 21704; (301) 662-5019, www.pmi-rf.com
VCO Tunes 2 to 4 GHz
Model RFVC6405 is a voltage-controlled oscillator (VCO) from Qorvo which is now available from stocking distributor RFMW, Ltd. The oscillator tunes across the full octave band from 2 to 4 GHz with second harmonics of -15 dBc or better and phase noise of -90 dBc/Hz offset 10 kHz from the carrier. The VCO, which draws 25 mA current from a +5-V dc supply, delivers 0 dBm output power across the full tuning range, using tuning voltages from 0 to 16 V dc. The source is supplied in a castellated package measuring 0.5 x 0.5 in. and usable over operating temperatures from -40 to +85°C.
RFMW, Ltd., Qorvo Stocking Distributor, 188 Martinvale Ln., San Jose, CA 95119; (408) 414-1450, www.rfmw.com.
GaN HEMT Die Drives to 8 GHz
A GaN-on-silicon high electron mobility transistor (HEMT) in bare die form serves as an active building block for high-power microwave amplifiers. Usable at frequencies from DC to 8 GHz, the model CGH80030D GaN HEMT provides 30 W saturated output power when supplied with +28 V dc. It exhibits typical small-signal gain of 17 dB at 4 GHz and 12 dB at 8 GHz. The transistor boasts drain efficiency of 65%. It is suitable for applications in commercial and military communications, as well as radar systems.
Wolfspeed, a Cree Co., 4600 Silicon Dr., Durham, NC 27703; (919) 313-5300, www.wolfspeed.com
Synthesizer Locks to C-Band Frequency
Model RFS5900A-LF is a phase-locked frequency synthesizer operating at 5.9 GHz with +/-2.5 ppm stability. It is fully integrated with a voltage-controlled oscillator (VCO), phase-locked loop (PLL), and 10-MHz reference oscillator in a package measuring 0.6 x 0.6 x 0.13 in. The synthesizer features typical phase noise of -80 dBc/Hz offset 1 kHz from the carrier, -85 dBc/Hz offset 10 kHz from the carrier and -103 dBc/Hz offset 100 kHz from the carrier. It provides +3 dBm output power with +/-2-dB flatness. Spectral purity includes second harmonics of -25 dBc and spurious suppression of -65 dBc. The VCO draws 35 mA from a +5-V dc supply while the PLL draws 15 mA from a +3-V dc supply. The synthesizer, which has an operating temperature range of -30 to +70°C, is available in tape-and-reel packaging for automated assembly manufacturing methods.
Z-Communications, Inc., 14118 Stowe Dr., Ste. B, Poway, CA 92064; (858) 621-2700, www.zcomm.com
SMT VCO Tunes From 5 to 10 GHz
Model DCO5001000-5 is a low-phase-noise voltage-controlled oscillator (VCO) with wide tuning range of 5 to 10 GHz. The typical phase noise is -70 dBc/Hz offset 10 kHz from the carrier. Supplied in a compact surface-mount-technology (SMT) package measuring just 0.3 x 0.3 x 0.1 in., the VCO operates with tuning voltages from 0.3 to 18.0 V dc. It is powered by a +5-V dc supply and draws less than 16 mA current while delivering output levels of greater than -4 dBm. It is ideal for applications in wideband synthesizers and signal sources for optimized frequency bands.
Synergy Microwave Corp., 201 McLean Blvd., Paterson, NJ 07504; (973) 881-8361, www.synergymwave.com
Dual-Band Antenna Extends to 6 GHz
Cobham Antenna Systems.
Model OA2-2.3V-5.2V/2358 is the latest addition to a line of spring-mount antennas for use at L-, S-, and C-band frequencies, with frequency coverage from 2.10 to 2.60 GHz and 4.40 to 6.00 GHz. The ground-plane-independent, dual-band antenna achieves 2-dBi gain at the lower frequencies and 4-dBi gain at the higher frequencies. The omnidirectional antenna features 360-deg. azimuth coverage with 65-deg. elevation at the lower frequencies and 35-deg. elevation at the higher frequencies. The antenna is equipped with a male TNC connector.
Chelton Ltd., trading as Cobham Antenna Systems, Brook Road, Wimborne, Dorset, BH21 2BJ, England; 44 (0) 1638-732-152, www.cobham.com
Surface-Mount Isolator Fortifies 14.6 to 15.3 GHz
A miniature surface-mount Ku-band isolator simplifies pick-and-place manufacturing processes. Model 2SMH9NC-ROHS holds insertion loss to a maximum of 0.5 dB from 14.6 to 15.3 GHz while providing at least 20-dB isolation across the operating bandwidth. The typical VSWR is 1.25:1 across the full 700-MHz bandwidth. The isolator can handle as much as 2 W (+33 dBm) power in both the forward and reverse directions. It measures 0.457 x 0.350 x 0.191 in. and is designed for operating temperatures from -40 to +85°C.
Renaissance Electronics & Communications LLC, 12 Lancaster Rd., Harvard, MA 01451; (978) 772-7774, www.rec-usa.com
Circuit Materials Meet High-Power Demands
The 92ML thermally enhanced laminates and prepreg materials are designed for high-power applications. The halogen-free, flame retardant, thermally conductive epoxy-based materials are suited for multilayer circuits requiring effective thermal management throughout the layers. The materials can be supplied with as much as 4 oz. of copper cladding and feature in-plane thermal conductivity to 3.5 W/mK. Ideal for circuits in automotive electronic systems, motor control, and power supplies, these materials exhibit a glass transition temperature Tg of +160°C and z-axis coefficient of thermal expansion (CTE) of 22 ppm/°C for temperatures of less than Tg and 175 ppm/°C for temperatures greater than Tg. The materials are a good fit for lead-free solder assembly processes.
Rogers Corp., Advanced Circuit Materials Div., 100 S. Roosevelt Ave., Chandler, AZ 85226; (480) 961-1382, www.rogerscorp.com