These amplifiers are ideal for use in WiMAX/WiBro applications at the commonly targeted sub-bands within the 2.3 - 2.9 GHz and 3.3 - 3.8 GHz frequency ranges. All four amplifiers are based on the highly reliable InGaP/GaAs HBT process technology, and incorporate proprietary bias circuitry to compensate for variations in linearity and current draw over temperature. An internal active bias allows the AH314/5 to operate at single +5V, while the AP561/2 internal active bias allows them to operate at +12V with an added feature of a +5V power down control pin.
"The InGaP HBT process technology is fast becoming an industry standard especially for the next generation technologies. Our family of cost-optimized WiMAX products are highly reliable with exceptional linearity performance," said Morteza Saidi, Vice President of Engineering at WJ Communications. "The introduction of AH314/5 and AP561/2 reinforces our commitment to meet the requirements of the next generation wireless systems with high performance and cost-effective products."
Product Overview
AH314 and AH315
The AH314 is a two-stage amplifier with 23 dB gain operating between 2.3 and 2.9 GHz, while the AH315 has 25 dB gain operating between 3.3 and 3.8 GHz. Both amplifiers offer +25 dBm linear output power with less than 2.5% error vector magnitude (EVM), and with greater than 2W of compressed 1 dB power. Key characteristics of both amplifiers are very low EVM at highly power backoff conditions as well as having very good gain flatness - less than 0.2 dB over a 100 MHz window. The AH314/5 are ideal for WiMAX/WiBro Base Transceiver Station (BTS) applications requiring linearity margin prior to the final stage amplifiers in the system.
AP561 and AP562
The AP561 offers 12 dB gain and operates across 2.3 - 2.9 GHz band, while the AP562 offers 12 dB gain across 3.3 - 3.8 GHz operating range. These amplifiers deliver greater than 1W linear power at less than 2.5% EVM with +39 dBm of 1 dB compressed output power. At 1W linear power, the amplifiers will also have 13% power-added efficiency (PAE) meeting the needs for ultra-efficient systems. The high output linear power and efficiency allows the AP561/2 to be targeted ideally used for outdoor customer premise equipment (CPE) applications.
The product features for each device are given below:
Part Frequency Gain P1dB Linear Quiescent Device Package
No Range (dB) (dBm) Output Current, Voltage
(GHz) Power with Icq (mA) V (V)
less than
2.5% EVM
(dBm)
------ ---------- ----- ------ ----------- ---------- -------- -------
AH314 2.3 - 2.9 23 33 25 600 +5 5x5mm
QFN20
------ ---------- ----- ------ ----------- ---------- -------- -------
AH315 3.3 - 3.8 25 33 25 600 +5 5x5mm
QFN20
------ ---------- ----- ------ ----------- ---------- -------- -------
AP561 2.3 - 2.9 12 39 30 300 +12 5x6mm
DFN14
------ ---------- ----- ------ ----------- ---------- -------- -------
AP562 3.3 - 3.8 11 39 30 400 +12 5x6mm
DFN14
------ ---------- ----- ------ ----------- ---------- -------- -------
Value Proposition
Responding to market and customers' demands for WiMAX amplifiers, the AH314/5 and AP561/2 reflects these inputs by concurrently lowering the overall total cost of ownership and maintaining superior performance. These InGaP/GaAs HBT amplifiers have the following key features:
-- High Linear Output Power
-- High Efficiency
-- Good Gain Flatness
-- Single Voltage Supply
-- Internally Matched to 50 ohm
-- RoHS-Compliant SMT package
Positive Market Feedback
The AH314/5 driver amplifiers and AP561/2 power amplifiers are presently sampling with key strategic customers; customer feedback has been very positive with special emphasis to the high performance margin used in a high power backoff condition for the AH314/5 and high efficiency for the AP561/2.
Target Applications
All four amplifiers are targeted for use with high performance WiMAX/WiBro CPE and/or BTS applications. The AH314 and AP561 are targeted for operation between 2.3 - 2.9 GHz, while the AH315 and AP562 are targeted for operation between 3.3 - 3.8 GHz. The AH314/5 are ideally used as the driver amplifier immediately after the direct modulator or transceiver chipset, while the AP561/2 can be used for single-ended or balanced configurations to achieve higher output power levels.
Availability & Pricing
Please contact your local sales at 408-577-6200 or e-mail sales@wj.com for more information on pricing and availability.
About WJ Communications
WJ Communications, Inc. is a leading provider of radio frequency (RF) solutions serving multiple markets targeting wireless communications, RF identification (RFID), WiMAX, and RF power solutions. WJ addresses the RF challenges in these multiple markets with its highly reliable amplifiers, mixers, RF integrated circuits (RFICs), RFID reader modules, chipsets, and multi-chip (MCM) modules. For more information visit http://www.wj.com/products/WiMAXAmplifiers.aspx or call 408-577-6200.
All trademarks used, referenced, or implicitly contained herein are used in good faith and highlighted to give proper public recognition to their respective owners.
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