9-2015

RF & WirelessAntennasNew GPSAntenna ModuleSub-SystemComponentsVCO Features SuperiorPhase Noise for a 6.8 GHzClock SourceRichardson RFPD, Inc. announced theavailability and full design supportcapabilities for a new GPS antennamodule sub-system from Maestro WirelessSolutions. The A2135-H combinesan enhanced, fully-functional SiRFStarIV GPS engine and a custom-designedhigh directional patch antenna on-board.It presents a solution to the most criticalchallenges in the GPS market: simplifiedintegration, leading performance,and efficient time-to-market.The A2135-H meets the demands forextreme low-power operation and ultrafastTime To First Fix (TTFF). Its highlevel of sensitivity allows for use inthe most demanding environmentalconditions, including fleet management,asset-tracking, vehicle-tracking,personal-tracking, and portable deviceapplications.According to Maestro Wireless, additionalkey features of the A2135-Hinclude:• lowest assembly cost: SMT basedintegrated GPS antenna module• small footprint: 17.8 x 16.5 mm• ultra-low power consumption: 29 mAaverage tracking (full power mode)• benchmarking sensitivity: -163 dBmtracking• in-band jamming signal removal:up to 8 strongest interferes signalsdetected and mitigated■ Richardson RFPD, Inc.www.richardsonrfpd.comZ-Communications, Inc. announced a newRoHS compliant Voltage Controlled Oscillatormodel. The CRO6800Z-LF operatesat 6.8 GHz within a tuning voltage range of0.5 to 4.5 V. This high performance VCOfeatures a remarkably clean spectral signalof -104 dBc/Hz @ 10 kHz offset and a typicaltuning sensitivity of 18 MHz/V.The CRO6800Z-LF is designed to deliver5 dBm of output power into a 50 ohmload while operating off a 5 V supply anddrawing typically 69 mA. This unmatchedVCO operates over the extended commercialtemperature range of -40 to +85 ºC. Thelow noise CRO6800Z-LF features a typicalfundamental rejection of -35 dBc andsecond harmonic suppression of -40 dBc,and comes in Z-Comm‘s standard VCO-24Hpackage measuring 0.86 x 0.63 x 0.22 in.The CRO6800Z-LF is well suited for satellitecommunication applications that requirean extremely low phase noise clock source.■ Z-Communications, Inc.www.zcomm.comMiniature Dual-ChannelRotary JointLink Microtek has introduced a new miniaturedual-channel rotary joint that has beenspecifically designed to save space in antennasfor Ka-band satellite-on-the-move communicationssystems, which are now beingdeployed for high-data-rate applications inboth the military and commercial sectors.With its high-power transmit channel implementedin a right-angle WR28 waveguide onthe fixed (input) side and a female K-typecoaxial connector on the rotating (output)side, the AM28CORJD rotary joint measuresjust 31.75 mm (D) x 74.68 mm (H),excluding the 50 mm-diameter UBR320standard bulkhead flange.The central transmit channel covers Kabandfrequencies from 29 to 31 GHz anddelivers excellent microwave performance,with a maximum power rating of 40 W CW,a typical insertion loss of only 0.6 dB anda maximum VSWR of 1.25.The L-band receive channel uses two femaleSMA coaxial connectors and operates overthe frequency range DC to 2.15 GHz. Itoffers a microwave power rating of 1 W CW,a maximum DC current rating of 0.5 A,an insertion loss of 0.25 dB and a typicalVSWR of 1.5.Designed and manufactured at LinkMicrotek’s premises in Basingstoke, thisrobustly constructed rotary joint is fabricatedfrom lightweight aluminium with anIridite finish, and its performance underextreme environmental conditions eithermeets or exceeds the requirements of MIL-STD-810G.■ Link Microtek, Ltd.sales@linkmicrotek.comwww.linkmicrotekeng.comLTE Band Designation ChartDownloadRFMW, Ltd. announced the availability ofa LTE band definition chart outlining frequencydesignations and bandwidths forLTE bands 1 through 44. Both uplink anddownlink information is provided alongwith duplex spacing information. Applicableusage areas for each band are highlighted.If you have ever had confusion orquestions regarding the multitude of LTE72 hf-praxis 9/2015