Adapters are the interfaces between two dissimilar components. While an adapter’s performance is directly proportional to its application and how stringent the requirements, it should have a minimal effect on the fidelity of the signal passing through it and not introduce any new unwanted signal phenomenon. For example, the user should not see an excessive signal power loss over frequency or over-moding (where a signal loss in a small frequency bandwidth results in an insertion loss dip). When choosing an adapter for measurements, users are presented with options or grades of performance. Common grades include calibration, instrumentation, general purpose,…
Author: RFMW
RFMW announces design and sales support for a high performance power amplifier. The Qorvo QPA2610, GaN on SiC amplifier provides 2 W of saturated output power with 23 dB large signal gain from 8.5 to 10.5 GHz. With 47% power-added efficiency at 20 V drain bias, RF ports are matched to 50 Ω and include integrated DC blocking capacitors. The QPA2610 is ideally suited for phased array radar applications where tight lattice spacing is required. Offered in a 5 x 5 mm plastic overmold QFN package.
RFMW announces design and sales support for Knowles – Novacap SV Series capacitor assemblies. SV series capacitors offer high capacitance-to-volume ratio, low equivalent series resistance (ESR) and low equivalent series inductance (ESL) while reducing overall circuit board footprint. Vertical stacking of ceramic capacitors provides far superior performance than either aluminum or tantalum electrolytic capacitors. Up to ten, same size chips, may be stacked with various lead configurations to safeguard against thermal and mechanical stresses as with the SV2220BB476M101LNW-10R, 47uF 100V (VDCW) assembly. 100% tested for dielectric withstanding voltage, insulation resistance, capacitance, and dissipation factor, the capacitors are suited for…
RFMW announces design and sales support for a range of front-end filters incorporating variable gain equalizers. For example, the Sangshin EQ42R1747S75A is a 1747.5 MHz filter with 75 MHz pass band (Band 3 Uplink) which integrates a variable gain equalizer. The equalizer is set via a variable resistor and enables a 1 dB gain variation at the passband low end with negligible effect on the upper end. This adjustment enables the flattest possible passband ripple entering the receive chain before it’s amplified by subsequent LNAs. Coupled with an available Downlink equalizer filter, the EQ42R1747S75A optimizes front-end performance for enterprise…
RFMW announces design and sales support for the Rakon Neptune Ultra Stable TCXO (US-TCXO) product family. The RNT7050 series offers best-in-class frequency stability of ±50 ppb for 5G and other telecommunication applications and is available in a 7×5 mm footprint. The core XMEMS , crystal resonator technology, maintains long-term stability (ageing) of better than 1.5 ppm over 10 years. Meeting the stringent requirements of IEEE 1588v2, ITU-T G.813, G.8273.2 and G.8262 & G.8262.1, the design and engineering of the RNT7050 series recognizes that 5G Remote Radio Head (RRH) air interfaces need tight EVM limit masks, and thus low contribution to…
RFMW announces design and sales support for a high efficiency transistor from Ampleon. The BLP9LA25S(G) is a 25 W device designed for mobile radio applications supporting frequencies from HF to 941 MHz. Operating from a 13.6 V supply with 72% drain efficiency, the BLP9LA25S(G) is ideal for TETRA, SSB and LTE mobile radio applications in VHF and UHF bands. Capable of withstanding a VSWR mismatch of 65:1, it’s extremely rugged and contains integrated dual-sided ESD protection for demanding environments. Mid-band power gain is up to 18.4 dB when biased class-AB. Offered in a gullwing configuration for surface mount applications, a…
RFMW announces design and sales support for a low-loss switch from Qorvo. The QPC7512 is a 75 ohm, SPDT switch operating from 5 to 3300 MHz. Insertion loss ranges from just 0.15 dB at lower frequencies to < 0.7 dB at maximum frequency. Processed using Silicon on Insulator (SOI), this reflective switch is designed for use in Fiber Deep nodes, CATV amplifiers and set top boxes used in 75 ohm environments but can also support 50 ohm designs. Port to port isolation is measured at 42 dB and the QPC7512 requires no external DC blocking capacitors on the RF…
To produce components such as oscillators and filters, resonant frequency circuits comprised of series and parallel inductance and capacitance are required. At lower frequencies, resonant circuits can be constructed with wire-wound coils and parallel-plate capacitors, but at RF and microwave frequencies, designers take advantage of material properties to create resonant structures without the need for individual components. One such common structure is the microwave cavity, a hollow, closed conductor that confines electromagnetic waves. When a radio frequency source is applied to the cavity at one of its resonant frequencies, standing waves are created and the cavity stores electromagnetic energy.…
RFMW announces design and sales support for a new DSA from pSemi. The PE43614 digital step attenuator supports a wide frequency range from 9 kHz to 45 GHz with 6-bit control using 0.5 or 1 dB steps. The attenuator is capable of maintaining 0.5 dB and 1 dB monotonicity throughout a 31.5 dB attenuation range with glitch-safe attenuation state transitions. Maximum insertion loss is 5.8 dB and the device supports parallel and serial programming interfaces with serial addressability. The PE43614 is available in a 4 x 4 mm package which requires no external blocking capacitors if 0 VDC is…
RFMW announces availability of the Knowles – DLI Wilkinson Power Divider portfolio ranging from 2 to 42 GHz. The portfolio also includes filters and broadband couplers. DLI’s PDW08607 is a 4-way power divider operating from 5.3 to 5.9 GHz with a maximum excess insertion loss of 0.7 dB and 18 dB of isolation. With excellent repeatability, DLI power dividers are ideal for ultra-compact phased array antenna applications with models supporting sub-6 GHz 5G designs as well as n257, n258, n260 and n261 mmWave bands. The PDW08607 has an amplitude balance of 0.4 dB and phase balance of 4 degrees.…