The Pulsar model No. PS3-51-451/11S delivers three matched outputs over the frequency range of 2 to 20 GHz with 1.8 dB insertion loss, 16 dB isolation, 1.6:1 VSWR, +/- 0.5 dB amplitude balance and +/- 12° phase balance. Outline dimensions are 2.80 inches × 1.00 inch × 0.40 inch. Shortly to be released are units with bandwidth of 0.5-18 GHz.
Pulsar Microwave Corporation
(800) 752-2790
www.pulsarmicrowave.com

M/A-COM has introduced four silicon germanium (SiGe) power amplifiers designed for “smart PA” gain along the TX/RX (transmit/receive) path of new DECT (Digital European Cordless Telephones), WLANs (wireless local area networks) and 2.4 GHz 802.11 b/g applications. Their features include integrated power detection, standard lead-free 3 mm FQFP-N packaging, single-supply 2.4 V operation, and a three-stage architecture optimized for linearity, efficiency and low-power consumption.

The MAAPSS0075 is an 802.11 b/g-compliant linear power amplifier that delivers 26.5 dBm of output power (P1dB at 3.3 V) with 32 dB of gain. Its typical 400 mA current consumption is 33 percent less than competitive offerings. Like its counterparts, it features an on-chip power detector that precludes the need for building additional feedback circuits for bias trimming. Its micro-amp power shutdown mode dramatically improves battery life. The amplifier is a three-stage device designed for WLAN 2.4 GHz linear applications and is housed in a lead-free 3-mm FQFP-N.

The MAAPSS0081 is optimized for worldwide (WDECT) applications that require linear operation at 2.4 GHz with 26 dBm of saturated output power. Its low power mode drops current consumption from 400 mA at power saturation to 150 mA at 17 dBm. Ramp power control ensures 45% power-added efficiency, stability and high linearity over its entire operating range. It too operates from a single +1.4 V to 4 V supply and is housed in an industry-standard 12-lead 3 mm FQFP-N package.

The MAAPSS0066 is characterized and tested as an RF power amplifier for more mainstream ISM and WDECT applications. It delivers 25 dBm power gain, 25 dBm saturated power output and stability across its operational boundaries.

The MAAPSS0082 is tailored for PHS (Personal Handy System) applications between 1.89 GHz and 1.92 GHz. Its features include 23 dBm linear output power, 31 dB power gain, 280 mA current drain at 23 dBm, and lead-free 3 mm 12-lead FQFP-N packaging.
M/A-COM Inc.
(800) 366-2266
www.macom.com

Spirent Communications has released its Push To Talk Over-The-Air (PTT-OTA) Test System. Spirent's PTT-OTA Test System meets the test challenges associated with CDMA networks and handsets that support Voice-over-IP (VoIP) PTT.

The PTT-OTA Test System is flexible and scalable and will enable users to progress from an over-the-air test system to a fully integrated, automated lab-based test solution.

The PTT-OTA system combines Spirent's TestDrive test executive software for overall system control and test management, Spirent's Universal Diagnostic Monitor (UDM) for automated mobile device control and monitoring, and Opticom's OPERATM voice quality software package to create a scalable solution that meets the analysis needs of both lab and field users.
Spirent Communications
(800) 927-2660
www.spirentcom.com

Hittite Microwave Corporation has announced a single-control, 450-2200 MHz voltage variable attenuator for applications in NMT, cellular, PCS & 3G wireless infrastructure.

With up to 48 dB of attenuation range, and +20 dBm of input IP3 throughout its entire attenuation range, the HMC473MS8 is suitable for RF transmit and receive chain applications in virtually all wireless infrastructure applications. The MSOP8 SMT-packaged attenuator requires no external components, and operates from a +3.3 V supply and a single 0 to +3.0 V control voltage.

Samples and evaluation PC boards are available from stock for sampling or sale.
Hittite Microwave Corporation
(978) 250-3343
www.hittite.com

Targeting next-generation GSM, WCDMA and UMTS-based direct-IF, multicarrier systems, Fujitsu Microelectronics America Inc. has unveiled MB86064, a dual 14-bit digital-to-analog converter (DAC) featuring conversion rate of 1 GSamples/s. Previous high was 800 Msamples/s. The new 14-bit 1 Gsamples/s DAC is implemented in 0.18 micron CMOS process.

Instrumental to supporting the increased data rate is Fujitsu's market-leading introduction of double data rate (DDR) LVDS interfaces on high-performance DACs. Combined with its loop-clock facility, this enables cost-effective, realizable solutions when combined with either FPGA or ASIC data generators. Completion of characterization prior to production approval has also led to an improvement in quoted ACLR performance. The figure, when generating 4 UMTS carriers at 276 MHz, has increased to 74 dBc, using a DAC conversion rate of 737 MSamples/s. At 1 Gsamples/s conversion, the power consumption is 750 mW. The device also boasts a host of features ranging from on-chip vector memories to segment shuffling.

The improved 14-bit DAC is priced at $120 each in 1000-unit quantities.
Fujitsu Microelectronics America Inc.
(408) 737-5600
www.fma.fujitsu.com

Stealth Microwave has introduced the SM1925-33, an amplifier designed to meet the needs of low-cost service providers working in the PCS, IMT2000, UMTS, ISM and WCS markets. This design supplies a minimum P1dB of 2 W and covers 1900 to 2500 MHz. Linear gain is 34 dB with a ±0.4 dB flatness across the band, and VSWR in/out of 1.5:1. The unit consumes ˜1.3 A of quiescent current and has internal voltage regulation that allows for operation between +8 to +12 V. Standard features include logic on/off control and thermal protection with an automatic reset. The overall module measures 4.7 inches × 2.0 inches × 0.54 inches.
Stealth Microwave Inc.
(888) 772-7791
www.stealthmicrowave.com

Adimos has developed a proprietary wireless multimedia connectivity solution for consumer appliances. Called wireless video module WVM1100, the semiconductor chips incorporated in the module deliver quality multimedia transmission over a wireless channel between any multimedia source (DVD, VCR, set-top box and media servers) and a multimedia display (plasma TV, LCD TV, home projectors, projection TV).

Using CMOS ASIC and SiGe-based power amplifier IC, the WVM offers a range of up to 75 meters. It incorporates fully standards-compliant wireless and video compression technologies, with complete software drivers and straightforward user interfaces. Plus, it implements embedded noise and interference management technology.

Key features include IEEE 802.11a 5 GHz wireless communications; a modular RF section that can be easily replaced to comply with different country spectrum requirements; MPEG-2 standard video compression and decompression, wireless bit rates of 6, 12 and 24 Mbps; video bit rates of 4, 8 and 14 Mbps; automatic adaptation of video bit rate and wireless link bit rate, can be set to fixed video bit rate and wireless link bit rate; and proprietary air protocol with re-transmit algorithm and buffer management algorithm. In addition, it offers automatic discovery and decision procedure for wireless channel selection with overall propagation delay of <1s. Furthermore, to ensure privacy and protection of video rights, it also includes security and encryption features. Operating from a 3.3 VDC supply, the WVM dissipates 5 W.
Adimos
(510) 209-4793
www.adimos.com