Product Focus Microwave Millimeter Wave Components Direct conversion I Q The LT5575 operates from a single 5 V samples and wi

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Product Focus Microwave Millimeter Wave Components Direct conversion I Q The LT5575 operates from a single 5 V samples and wi Powered By Docstoc
					       Product Focus

          Microwave/Millimeter-Wave Components
          Direct-conversion I/Q                                  The LT5575 operates from a single 5 V            samples and with customized pricing.
          demodulator                                         supply, drawing a quiescent supply current of       Skyworks Solutions
                                                              132 mA. The device comes in a 16-lead 4 mm          (781) 376-3000
                                                              x 4 mm QFN package. Pricing starts at $7.75         www.skyworksinc.com
                                                              each in 1000-piece quantities.
                                                              Linear Technology                                   Ceramic diversity antennas
                                                              (408) 432-1900
                                                              www.linear.com

                                                              WCDMA front-end modules

             To improve the bandwidth and linearity of
          I/Q demodulators, Linear Technology Corpo-
          raation (LTC) has combined its second-genera-
          tion RF bipolar process with improvements in
          frequency range of on-chip transformers and
          phase shifter. As a result, the supplier’s latest
          I/Q demodulator, LT5575, offers high linearity
          and broadband for direct conversion in base sta-
          tion receivers and RFID readers. The LT5575’s
          extended operating frequency range from                                                                    A line of ceramic diversity antennas from
          800 MHz to 2.7GHz covers all of the cellular                                                            Pulse enable high-data rate transmission, yet
          and 3G infrastructure, WiMAX and RFID                                                                   are small enough to fit in mobile terminals
          bands with a single part. Its capability to                                                             such as new-generation multimedia phones
          convert from RF directly to baseband at dc or           Solutions have been added to Skyworks’          and other wireless devices. Their ceramic
          low frequency results in simplified receiver         Intera family of front-end modules (FEM)            composition provides a high degree of signal
          designs, reduced component count and use            addressing wideband code-division multiple          immunity, enabling them to be placed close to
          of lower-cost, low-frequency components.            access (WCDMA) applications that support            other antennas for high-performance diversity
          Plus, it offers an outstanding IIP3 of 28 dBm       bands I, II, IV, V and VI . The modules simplify    operation in small devices. Using diversity
          and IIP2 of 54.1dBm at 900 MHz, and an              RF design, reduce critical board space, extend      antennas in close proximity enables them to be
          IIP3 of 22.6dBm and IIP2 of 60 dBm at 1.9           battery life and facilitate implementation          switched within microseconds if one antenna
          GHz. The device has a conversion gain of            within virtually any baseband architecture.         experiences noise, providing improved signal
          3 dB, which when combined with a DSB noise              The SKY77433 for band I is a fully matched      quality with fewer dropouts.
          figure of 12.7 dB, produces excellent receiver       16-pin, full-duplex FEM in a 4 mm x 7 mm               The series consists of the 850 MHz RX, 900
          dynamic range. The device’s I and Q outputs         package for universal mobile telecommunica-         MHz RX, 1.8 GHz RX, 1.9 GHz RX, 2.1 GHz
          have typical amplitude and phase matching of        tions systems (UMTS) in Europe and Asia,            RX, and 2.4 GHz RX. Size and weight are
          0.04 dB and 0.6.                                   also identified as the international mobile          10 mm x 3.2 mm x 2 mm (width, length,
             The demodulator is capable of supporting         telecommunications (IMT) 2000. The                  height) and 310 mg for the 1.8 GHz, 1.9 GHz
          multiband base stations covering the 850 MHz        SKY77434 for band II is a 4 mm x 7 mm FEM           and 2.1 GHz antennas, 10 mm x 3.2 mm x 4
          GSM/EDGE bands and the 1.9 GHz/2.1 GHz              for U.S. PCS applications. The SKY77435 for         mm and 600 mg for the 850 MHz and 900
          3G wireless services (including CDMA2000,           band IV is a 4 mm x 7 mm FEM for advanced           MHz, and 3.2 mm x 1.6 mm x 1.1 mm and
          WCDMA, UMTS and TD-SCDMA). It is                    wideband systems (AWS), otherwise known as          33 mg for the 2.4 GHz antennas.
          ideal for single-carrier micro and pico base        the FCC auctioned spectrum. The SKY77436            Pulse
          stations, where low-cost architectures are key.     for band V is a 4 mm x 7 mm FEM for the U.S.        (858) 674-8100
          Its performance also makes it suitable for 2.6      cellular market, while band VI is developed         www.pulseeng.com
          GHz WiMAX base stations, and as an IF de-           for Japan.
          modulator in a microwave radio link or satellite        BAW filters are integral components of           DCS bi-sector array
          receiver. The unit’s high 13.2 dBm P1dB (1dB        radio-frequency (RF) architectures. Skyworks’          TenXc Wireless offers the DCS bi-sec-
          compression point) performance at 900 MHz           bulk acoustic wave (BAW) filter, which the           tor array, a spectral capacity enhancement
          lends it to high-performance RFID readers.          company has sampled to various multimode            solution in the 1800 MHz band for GSM,
             The LT5575 integrates two matched, high          handset customers, is also leveraged in per-        EDGE, and UMTS network growth. The DCS
          linearity mixers. These are driven in quadrature    sonal communications system (PCS) bands I,          bi-sector array provides additional service
          by a low-noise, buffered local oscillator (LO)      II and IV, creating a complete RF solution for      capacity using existing cell site infrastructure
          with an on-chip precision 0° and 90° phase          handsets when combined with the company’s           at a fraction of the cost and time required to
          shifter. The mixers produce accurate I and Q        switches, power amplifiers, front-end modules        install additional sites.
          demodulated outputs capable of supporting a         and transceivers. Leveraging load insensitive          The array offers a unique RF enhancement
          baseband bandwidth from dc up to 490 MHz.           power amplifier (LIPA) technology and fully          solution addressing spectral capacity and
          Both the RF and the LO inputs have integrated       integrated filters, these modules address opera-     quality challenges found in high-traffic sites
          on-chip transformers that enable 50  broad-        tors’ requirements for 3G multimode, multi-         and markets with limited spectrum. The array
          band matching and single-ended operation.           media applications where size, performance          can be applied in targeted ‘hotspot’ sectors
          This simplifies the design and reduces costs.        and cost are critical. They are also available as   and network areas to support service growth


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703RFD31.indd 46                                                                                                                                      3/6/2007 2:28:47 PM
          or facilitate spectrum re-farming for EDGE        high-electron mobility transistor (pHEMT)           with a nominal -5 dBm drive requirement. The
          and UMTS overlay deployments. Its “drop           device model technology. It covers the 0.5          RF and LO ports of the mixer are dc-blocked
          and insert” RF design allows for cost-effec-      GHz to 18 GHz frequency bands, and achieves         and matched to 50 Ω for design convenience,
          tive network growth with minimum network          1.8 dB insertion loss and 35 dB isolation.          and the device consumes only 30 mA from a
          disruption, reducing the deployment of added         The device has a P1dB of 20 dBm and              +3 V supply.
          service capacity to a matter of weeks.            2 ns rise/fall time. The CSW0118-BD is                 These devices complement Hittite’s high-
             By applying the principles of higher-order     ideal for radar, communications, avionics           performance GaAs double-balanced and
          sectorization, the DCS bi-sector array increas-   and test/measurement applications. The              sub-harmonic mixers that provide frequency
          es overall site capacity. Asymmetric patterns     backside is gold plated, making the device          coverage from 0.6 GHz to 42 GHz. Samples
          and single dual-sector panel addresses perfor-    compatible with eutectic or conductive epoxy        and evaluation PC boards for all SMT pack-
          mance, network design and implementation          die attach and either thermocompression or          aged products are available.
          issues. In operator network deployments, the      thermosonic wire bonding.                           Hittite Microwave Corporation
          bi-sector array has demonstrated a doubling          Mimix performs 100% dc testing with              (978) 250-3343
          of capacity for voice and data services. The      sample RF evaluation on the CSW0118-BD,             www.hittite.com
          array can be used to upgrade sites without re-    as well as 100% visual inspection to MIL-
          engineering surrounding sites, as well as in      STD-883 method 2010. The chip has surface           GPS module
          greenfield capacity site deployments.              passivation to protect and provide rugged parts
          Tenxc Wireless                                    with backside via holes and gold metallization
          (613) 591-6696                                    to allow a conductive epoxy or eutectic solder
          www.tenxc.com                                     die attach process. Samples and production
                                                            quantities are available.
          Coaxial resonator VCO                             Mimix Broadband
                                                            (281) 988-4600
                                                            www.mimixbroadband.com

                                                            Surface-mount isolators/
                                                            circulators
                                                               The redesigned and improved surface-
                                                            mount SLE series isolators from Renaissance
                                                            Electronics are designed for low power ap-             Antenova’s GPS RADIONOVA RF an-
                                                            plications. The device operates from 380 MHz        tenna module for embedded GPS integrates
                                                            to 2200 MHz and is low-cost and miniaturized,       a high-performance and low-power receiver
                                                            making it suited for telecom applications. This     IC with its high efficiency single-ended inter-
                                                            device is also available in a circulator version.   nally balanced antenna technology. The GPS
                                                            Models are available in typical bandwidths          RADIONOVA RF antenna module is a true
             Crystek’s CVCO55CC-0827-0840 VCO               of 5% with isolation >17 dB and insertion           drop-in solution that delivers high efficiency
          is a coaxial resonator oscillator that operates   loss <0.8 dB.                                       and reliable performance. The module consists
          from 827 MHz to 840 MHz with a tuning             Renaissance Electronics                             of a GPS radio IC and a single-feed balanced
          voltage range of 0.2 Vdc to 4.7 Vdc. This         (978) 772-7774                                      antenna in a 7 mm x 34.5 mm x 4 mm pack-
          coaxial VCO features a typical phase noise of     www.rec-usa.com                                     age with a low profile connector for vertical
          -124 dBc/Hz at 10 kHz offset and has excellent                                                        mounting. Because of its small size and
          linearity. The VCO is for use in applications     Surface-mount MMIC mixers                           balanced antenna technology, Antenova’s
          such as digital radio equipment, fixed wireless       Hittite Microwave has introduced two             GPS RF antenna module only requires a PC
          access, satellite communications systems, and     GaAs MMIC mixers for applications from              board with a 20 mm x 40 mm groundplane.
          base stations.                                    6 GHz to 34 GHz, including space applica-           Antenova
             The VCO is housed in a 0.5 in. x 0.5 in.       tions. The HMC144LH5 is a double-bal-               (847) 551-9710
          x 0.220 in. SMD package. It exhibits an           anced MMIC mixer that can be used as an             www.antenova.com
          output power of -6 dBm (typical) into a 50        upconverter or downconverter from 6 GHz
          Ω load with a supply of +5 Vdc and a typical      to 20 GHz and requires no external com-             Broadband coaxial limiters
          current consumption of 30 mA. Pushing and         ponents or dc biasing. Housed in a ceramic             The VLM-52+ from Mini-Circuits is a
          pulling are minimized to 0.05 MHz/V. Second       hermetic SMT leadless package, it features          broadband coaxial limiter that operates over
          harmonic suppression is -18 dBc typical.          an IF bandwidth of dc to 3 GHz, up to 35 dB         a bandwidth of 10 MHz to 500 MHz. Appli-
          Pricing for the CVCO55CC-0827-0840 will           of LO/RF isolation and an input IP3 of +24          cations include military and high-reliability,
          start at $24.00 each in volume.                   dBm. A reliable alternative to hybrid diode         the stabilizing of generator outputs, and the
          Crystek                                           mixers, the device allows the use of surface-       reduction of amplitude variations in 50 Ω
          (800) 237-3061                                    mount manufacturing techniques and may              systems. The device handles an RF input
          www.crystek.com                                   be upscreened to MIL-PRF-38535 for Class            power up to 100 mW. Typical output power
                                                            B or Class S applications.                          is 9.5 dBm. The maximum diameter and total
          MMIC SPDT switch                                     The HMC338LC3B is a 24 GHz to 34 GHz             length of the device are 10.41 mm and 36.32
             Mimix Broadband’s CSW0118-BD is a              subharmonically pumped (x2) MMIC mixer              mm, respectively. Available now, pricing starts
          gallium arsenide (GaAs) monolithic micro-         with an integrated LO amplifier housed in a          from $ 41.95 each.
          wave integrated circuit (MMIC) single-pole        leadless ceramic SMT package. This device           Mini-Circuits
          double-throw (SPDT) switch. The device uses       features an IF bandwidth of dc to 3 GHz, 2 LO-      (718) 934-4500
          a 0.5 μm gate-length GaAs pseudomorphic           to-RF isolation of 40 dB, and a LO amplifier         www.minicircuits.com


     48                                                                www.rfdesign.com                                                           March 2007




703RFD31.indd 48                                                                                                                                   3/6/2007 2:28:48 PM
          SiGe prescaler                                     Empower RF                                        single ended to differential is accomplished
                                                             (310) 412-8100                                    through on-chip RF balun transformers at the
                                                             www.empowerrf.com                                 RF and LO inputs. The operating bandwidth
                                                                                                               covers the 850 MHz to 965 MHz GSM and
                                                             Waveguide broadwall coupler                       U.S. cellular bands, as well as 1.7 GHz to 2.1
                                                                RLC Electronics offers a standard range        GHz 3G wireless services. The mixer supports
                                                             of multihole broadwall directional couplers       WiMAX operating in the U.S. at 2.6 GHz and
                                                             covering the frequencies from 40 GHz to           worldwide at up to 3.8 GHz.
                                                             2.6 GHz in standard waveguide sizes. The             Operating from a single 3.3 V supply, it
                                                             electrical characteristics of high directivity    draws a quiescent current of 81.6 mA. A shut-
                                                             and coupling flatness are achieved by using        down feature is provided. When the chip is
                                                             a precise machined coupling hole pattern and      disabled, it draws a maximum sleep current of
                                                             a precision load in the secondary arm. Non-       100 uA. The device comes in a 16-lead 4 mm x
             California Eastern Labs offers NEC’s            standard configurations or selected electrical     4 mm QFN surface-mount package. The pricing
          UPB1514TU SiGe divide-by-8 prescaler. It           parameters are available on request. Maximum      starts at $5.95 each in 1,000-piece quantities.
          is designed for input frequencies of 8 GHz to      VSWR values are 1.1:1 for primary, and 1.15:1     Linear Technology
          16 GHz and delivers typical output power of        for secondary. Directivity is 35 dB, and the      (408) 432-1900
          –5 dBm at 1 GHz to 2 GHz. Fabricated using         available coupling values are 10 dB, 20 dB,       www.linear.com
          NEC’s 50 GHz UHS2 silicon bipolar process,         30 dB, 40 dB and 50 dB +/-1 dB.
          the UPB1514TU is ideal for upconversion            RLC Electonics                                    High-power PIN diodes
          and downconversion applications in Ku-band         (914) 241-1334                                        MicroMetrics has released non-magnetic
          satellite and terrestrial communications. The      www.rlcelectronics.com                            metal electrode leadless faced (MELF) pack-
          UPB1514TU prescaler delivers excellent                                                               aged PIN diodes that feature high-power
          performance and is designed to serve as a          High linearity downconverting                     handling and low distortion. These diodes
          low-cost alternative to GaAs devices.              mixer                                             are designed for switching and attenuator ap-
             Supply voltage is 4.5 V to 5.5 V, and current                                                     plications from HF through UHF frequencies.
          consumption is 50 mA at 5 V. Input power is                                                          They’re manufactured using MicroMetrics’
          –5 dBm to +6 dBm at 13.5 GHz to 16 GHz, re-                                                          glassing process that features full-face bond-
          spectively. Output power is –5 dBm at 15 GHz                                                         ing on the anode and cathode of the device
          input. The UPB1514TU is housed in NEC’s                                                              to ensure full-surface contact of the square
          2.2 mm x 2.0 mm x 0.5 mm TU package.                                                                 ceramic package. This creates lower elec-
          This miniature, low-profile package features                                                          trical and thermal resistance and provides
          Pb-free terminals and is RoHS compliant. The                                                         higher average performance at RF power
          device is available and priced from $2.71 in                                                         levels up to 100 W CW. They also feature
          quantities of 10,000. Evaluation boards are                                                          low series resistance, which leads to low
          also available.                                                                                      inductance characteristics, and low junction
          California Eastern Labs                                                                              capacitance, which delivers high isolation.
          (408) 919-2500                                                                                           The product family has resistance specifi-
          www.cel.com                                            The LT5557 is a high linearity, 3.3 V,        cation at 100 MHz from 0.3  to 1.0  at 100
                                                             downconverting active RF mixer from Linear        mA, capacitance specifications at 1 MHz of
          Tx/Rx switches                                     Technology. Implemented in third-genera-          0.5 pF to 2.0 pF at 100 V, and lifetime speci-
             Solid-state, high-power Tx/Rx switches          tion SiGe bipolar process, it is designed to      fications from 1.0 µs to 8.00 µs. As a result,
          from Empower RF, the TRS02-1000-1000,              elevate receiver dynamic range performance        this family of PIN devices has lifetime speci-
          cover a frequency range of 1.5 MHz to 1000         while extending bandwidth capability to cover     fications that will allow for lower intermod
          MHz at power levels up to 1 kW. The goal of        3G and WiMAX base station frequencies to          distortion and have a higher average incident
          any high-power system design using high-pow-       3.8 GHz. The mixer offers 24.7 dBm IIP3,          power-handling capability. The electrical and
          er amplifiers and Tx/Rx switches is to provide      noise figure of 11.7 dB, and 2.9 dB of gain at     mechanical specifications of these devices
          high reliability while maintaining full system     1.95 GHz. Its performance remains robust at       meet the requirements of MRI systems.
          protection into any load condition including       WiMAX frequencies with 23.5 dBm IIP3, and             These hermetically sealed devices have
          open and short circuits. These units accomplish    1.7 dB of gain at 3.6GHz. This performance is     been designed for high-volume tape and reel
          this with solid-state switching technology in      achieved with a low –3 dBm LO input drive         assembly using the ceramic package flat sur-
          conjunction with high-reliability solid-state      level, enabling high LO isolation. Typical        face for automatic pick and place assembly or
          high-power amplifiers. The design improves          LO-to-RF isolation is better than 42 dBc at       vacuum pickup techniques. All solder surfaces
          the system’s efficiency and output capability       1.95 GHz. Also, LT5557’s power consumption        are tin plated and compatible with reflow sol-
          by minimizing transmit and receive path loss       is low for this class of high linearity mixers,   dering methods. Package types include the
          while providing fast switching speeds inherent     typically 270 mW from a 3.3 V supply. The         surface-mount ceramic package CS127-1 and
          in PIN diode devices, less that 50 μs.             device incorporates on-chip RF transform-         standard MELF CS127-4. These devices can
             The units are powered from a 28 Vdc sup-        ers to enable convenient single-ended, 50        be delivered in chip form or custom-specified
          ply and consume 1 A. The transmit path loss        matching at the RF and LO inputs.                 packages.
          is 0.25 dB, and spurious signals are limited to        The LT5557 incorporates a double-bal-              Prices and delivery schedules vary de-
          120 dBc for all units. Cooling is provided with    anced active mixer core topology with on-chip     pending on electrical parameters and quantity
          an external heat sink. Operating temperature       LO buffer. Differential drive is employed         required. Average lead time is 4 to 6 weeks.
          is from 0 °C to 50 °C, and shutdown occurs         internally throughout the mixer to maximize       MicroMetrics
          at 85 °C.                                          linearity and RF isolation. Conversion from       www.micrometrics.com


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