computer hardware, electronic components, consumer electronics  
Many modern communication systems include antennas with transmitter/receiver devices (transceivers) for simultaneously transmitting and receiving independent radio frequency (RF) signals. Transceivers include a transmitter section and a receiver section. The transmitter includes a modulator to superimpose information, i.e., data, onto a suitable radio frequency (RF) carrier signal, such as a microwave frequency carrier signal. The receiver receives data carried by the carrier frequency signal and, in a heterodyning system, downconverts the received signal to a suitable intermediate frequency signal. A commonly used communication technique in RF wireless communications is spread spectrum. Spread spectrum modulation techniques are increasingly desirable for communications, navigation, radar and other applications. The transmitter in a spread spectrum communications system spreads the signal in accordance with the data to be transmitted. Each bit or set of bits to be transmitted is converted into a plurality of chips having a much wider bandwidth than the original data. The receiver despreads the spread spectrum signal in order to recover the original data signal. In direct sequence spread spectrum, the despreading of the signal is accomplished by correlating the received signal with a reference code matching the pseudo noise code used by the transmitter to transmit the information. In high frequency transceivers, the data being transmitted is baseband data which is modulated up to the carrier frequency in a two or three stage process.

Listings on RF and microwave electronics : RF transceivers

  • Micro Linear Corporation
    Developing integrated circuit solutions for the wireless communications market. Products include 2.4GHz ISM band transceivers, ML2722 900MHz 1.5Mbps low IF transceiver, ML2723 900MHz 1.5Mbps low IF transceiver, and ML2751 integrated PA/LNA/pin diode driver. Product application areas include digital cordless telephony, game controllers, headsets and other personal electronic appliances. USA.

    http://www.microlinear.com/
  • Sierra Monolithics, Inc.
    Designs and manufactures RFICs and modules for wireless, wireline and military applications. Products include 2.5 / 3.5 GHz dual band transceiver, 60 GHz millimeter wave products, X band beacon microponder, dual-band beacon microponder, compressive video amplifier detector, video & telemetry data link, 10 Gsps 4bit analog to digital converter, cross point switches, compressive video detectors for F18 radars, and high speed communication ICs to 40 Gbps. USA.

    http://www.monolithics.com

Lamps, light bulbs, lighting fixtures

2009 Electronics manufacturers directory • (RF transceivers section) • Site map