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While most exhibits at IMS focus on microwave and mmWave components, Aethertek was there with its complete 5G radio units. The photo at right shows the company’s IRIS III 8×8 antenna-in-module beamforming unit installed in a small cell. The company’s radio units cover the 5G bands n257, n258, and n261.
Aethertek 5G radio units extend 5G networks to the FR2 mmWave bands n257, n258, and n261.
Guerilla RF introduced a series of ¼ W linear power amplifiers. Based on InGaP HBT process, the GRF5526,GRF5536 and GRF5536W serve 5G wireless infrastructure applications that require native linearity over large 100 MHz bandwidths and temperatures from -40°C to 105°C.
The GRF5526/GRF5526W and GRF5536/GRF5536W operate at frequencies of 2.3 GHz to 2.7 GHz and 3.3 GHz to 4.2 GHz respectively. Those frequencies cover the n7, n30, n38, n40, n41, n48, n53, n77, n88 and n90 5G NR bands. They deliver 23 dBm (typ.) of linear power over their entire temperature range while maintaining adjacent channel leakage ratio (ACLR) levels of better than -45 dBc and error-vector magnitude (EVM) levels <1% without the need for digital predistortion (DPD). That’s critical for cellular applications that include home and commercial repeaters/boosters, femtocells, and picocells, as well as cable loss compensators found in automotive “shark fin” antennas.
The company also introduced GRF5607 and GRF5608, the first in a new line of ½ W linear power amplifiers designed specifically for 5G wireless infrastructure applications requiring exceptional native linearity over temperature extremes of -40°C to 85°C. Spanning frequency ranges of 703 MHz to 748 MHz and 746 MHz to 830 MHz, respectively, the GRF5607 and GRF5608 operate in the n12, n14, n18, n20, and n28 5G new radio (NR) bands. The devices typically deliver 26 dBm of linear power over the entire -40°C to 85°C temperature range while maintaining ACLR levels of better than -45 dBc and EVM levels <1.2% – all without DPD.
Guerilla RF GRF5526 and GRF5536 ¼-W Linear PAs.
imec and AT&S announced an integration approach that combines D-band (110 GHz to 170 GHz) chips and waveguides that can result in low-cost, mass-manufacturable PCBs. In a press release, the companies claim that hollow air-filled substrate-integrated waveguide (AFSIW) technology with fully metalized sidewalls offers significantly reduced signal loss compared to substrate-integrated waveguides (SIWs) that use rows of vias and the planar interconnect technology used in current communication and radar systems. Despite this intrinsic benefit, a mass-production approach for PCBs with integrated AFSIW waveguides is currently unavailable.”
imec and AT&S integrated substrates and waveguides.
IMS isn’t only about wireless, for wireline communications can make appearances. In the Menlo Micro booth, Stuart Yang explained the company’s MM5620 high-frequency switch. In the video, Yang provided a live demonstration of the MM5620 passing a 64 Gb/sec PAM4 signal.
Menlo Micro also introduced the PE53230 and PE53231. Each of these modules contain two switches and two LNAs for high and low band frequencies. Menlo Micro claims that thees modules deliver the industry’s lowest noise figure at less than 1 dB.
Microchip introduced the not-yet-released DSC500 6-output PCIe Gen 1-6 clock-tree-on-a-chip. It contains a MEMs clock generator with two integer dividers, two fractional dividers, and Spread Spectrum outputs. The MEMS resonator is programmed at the factory, which you can program the device to divide down to your final frequency. Microchip also announced the 5071B cesium atomic clock, an upgrade from the 5071A. The 5071B provides absolute frequency accuracy of 5E-13 over all specified environmental conditions for the life of the product.
RF and microwave systems use a variety of passive components. Waveguides steer energy from a source to one or more destinations. Microwave Development Labs manufactures waveguides, primarily for aerospace and defense applications. In the video, design and manufacturing engineer John Kane explained how the company’s waveguide products work. The size of the waveguide sets its frequency range. Kane used the company’s rigid waveguide data “slide rule” to show how to select a waveguide based on frequency.
Quantic companies exhibited numerous products. Specifically, Quantic Eulex exhibited microwave and mmWave capacitors. The company’s Gap Capacitors operate at frequencies up to 100 GHz. They replace X7R dielectrics and single-layer, wire-bond ceramic capacitors. Applications include DC blocking, RF bypass, impedance matching, filtering, and tuning.
Quantic Eulex vertical layer and gap capacitors.
pSEMI introduced two multi-chip modules featuring dual-channel switches. The PE53230 covers 3.3 GHz to 3.8 GHz and the PE53231 covers 3.5 GHz to 4.0 GHz. Each module contains two switches and two LNAs for high and low band frequencies. The company also introduced SP4T switches for 5G FR1 base stations featuring frequency coverage to 8 GHz. The PE42445 comes in a 3×3 mm LGA package and the PE42446 comes in a 4×4 mm LGA package. See EE World full coverage at Switch and LNA modules deliver less than 1 dB noise.
Spectrum Control introduced SCi Blocks, a series of digitally tunable, wideband upconverters and downconverters designed for SWaP-C electronic warfare (EW), signal intelligence (SIGINT), and Intelligence Surveillance and Reconnaissance (ISR) applications. The Sci Blocks will be available in three tiers for RF Systems-in-Packages (RFSiPs), RF “sticks,” and Sensor Open Systems Architecture (SOSA)-aligned OpenVPX modules.
The products provide spectrum awareness from 20 MHz to 18 GHz, which means 16 GHz of contiguous spectral coverage with 2 GHz of instantaneous bandwidth (IBW). The downconverter stick offers 25 dB gain and noise figure of 14 dB to 17 dB across the entire frequency range. Other specifications include third-order intercept (IP3) of 25 dBm and single-tone spurious greater than or equal to 60 dBc. IF calibration features let you optimize spectral performance.
Spectrum Control’s digitally tunable, wideband downconverters and upconverters.
Times Microwave exhibited its recently released XtendedFlex 045 micro-coaxial cable. This 50 Ω cable operates at frequencies up to 18 GHz. It has a capacitance of 83.3 pf/m
Times Microwave XtendedFlex 045 micro-coaxial cable