news digest ♦ Telecoms
“4G devices enable users to tap into ultra-fast broadband speeds, resulting in greater data use,” notes Jerry Miller, vice president of business development and marketing at Anadigics. “This change in use patterns drives the power amplifier to operate more frequently in high power mode. By delivering outstanding efficiency in both high and low power modes, Anadigics’ new ProEficient power amplifiers are helping manufacturers set the standard for 4G battery-life.”
These PAs use the company’s exclusive InGaP- Plus technology to achieve outstanding efficiency at high and low power modes in order to maximize 4G battery-life without the use of a DC-DC converter. The devices are also optimised for use with average power tracking to further increase efficiency and reduce current consumption at medium and low operating powers.
In addition to outstanding efficiency, ProEficient power amplifiers deliver exceptional linearity to ensure a stable connection for clear voice and high- speed data. The first ProEficient PAs are available for use in the world’s most widely used 3G/4G frequency bands, such as bands 1, 2, 3/4/9/10, 5, and 8.
With a low quiescent current, Anadigics says this product family offer best-in-class linearity (ACLR1). They are LTE compliant, WCDMA, HSPA, and HSPA+ compliant and CDMA/EVDO compliant. The highly integrated 3 mm x 3 mm modules have Internal voltage regulation and integrated DC blocks on RF ports. They offer RF matching optimised for output power, efficiency, and linearity in a 50 Ω system.
Anadigics ProEficient PA Family Key Facts and Highlights:
New Freescale GaAs RF power device raises the performance bar
The MMDS25254H 2300-2700 MHz device employs a gallium arsenide MMIC and indium gallium phosphide HBT technology
Freescale Semiconductor has introduced new Airfast transistors engineered to boost the efficiency, peak power and signal bandwidth of next-generation base stations.
With the new offerings, Freescale’s flagship Airfast RF power product line now includes at least one solution for each cellular band and supports both small and large cell base station deployments.
The cost-effective, small-configuration Airfast RF power solutions are designed to help network equipment manufacturers and operators support multiple wireless standards, manage escalating data transmission rates and keep capital and operating costs low.
To complement the new Airfast devices, Freescale is also announcing a new class of control products called advanced Doherty alignment modules (ADAM) that enables real-time adjustment of phase and amplitude for the optimisation of traditional Doherty power amplifiers. The modules are designed to work with Airfast devices to boost overall system performance, including increased power efficiency, output power and linearity across the frequency band.
The firm has released a number of LDMOS solutions.
Samples of the ProEficient PAs are available now for qualified programs.
Another module, the MMDS25254H ADAM, is a new class of highly integrated GaAs MMIC control circuits designed specifically to optimise the performance of today’s Doherty amplifiers. ADAM provides the ability to align and optimise the RF performance in the carrier and peaking paths of a Doherty amplifier thus providing improved overall BTS performance. The 2300-2700 MHz device also employs E-pHEMT and InGaP HBT technology.
When combined with Airfast power transistors, this sophisticated technology provides increased
88
www.compoundsemiconductor.net July 2012
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55 |
Page 56 |
Page 57 |
Page 58 |
Page 59 |
Page 60 |
Page 61 |
Page 62 |
Page 63 |
Page 64 |
Page 65 |
Page 66 |
Page 67 |
Page 68 |
Page 69 |
Page 70 |
Page 71 |
Page 72 |
Page 73 |
Page 74 |
Page 75 |
Page 76 |
Page 77 |
Page 78 |
Page 79 |
Page 80 |
Page 81 |
Page 82 |
Page 83 |
Page 84 |
Page 85 |
Page 86 |
Page 87 |
Page 88 |
Page 89 |
Page 90 |
Page 91 |
Page 92 |
Page 93 |
Page 94 |
Page 95 |
Page 96 |
Page 97 |
Page 98 |
Page 99 |
Page 100 |
Page 101 |
Page 102 |
Page 103 |
Page 104 |
Page 105 |
Page 106 |
Page 107 |
Page 108 |
Page 109 |
Page 110 |
Page 111 |
Page 112 |
Page 113 |
Page 114 |
Page 115 |
Page 116 |
Page 117 |
Page 118 |
Page 119 |
Page 120 |
Page 121 |
Page 122 |
Page 123 |
Page 124 |
Page 125 |
Page 126 |
Page 127 |
Page 128 |
Page 129 |
Page 130 |
Page 131 |
Page 132 |
Page 133 |
Page 134 |
Page 135 |
Page 136 |
Page 137 |
Page 138 |
Page 139 |
Page 140 |
Page 141 |
Page 142 |
Page 143 |
Page 144 |
Page 145 |
Page 146 |
Page 147 |
Page 148 |
Page 149 |
Page 150 |
Page 151 |
Page 152 |
Page 153 |
Page 154 |
Page 155 |
Page 156 |
Page 157 |
Page 158 |
Page 159 |
Page 160 |
Page 161 |
Page 162 |
Page 163 |
Page 164 |
Page 165 |
Page 166 |
Page 167 |
Page 168 |
Page 169 |
Page 170 |
Page 171 |
Page 172 |
Page 173 |
Page 174 |
Page 175 |
Page 176 |
Page 177 |
Page 178 |
Page 179 |
Page 180 |
Page 181 |
Page 182 |
Page 183 |
Page 184 |
Page 185 |
Page 186