Upconverting mixers integrate RF transformer to ease design

5 May 2004 Telecoms, Datacoms, Wireless, IoT

Two new high linearity upconverting RF active mixers with integrated RF transformers from Linear Technology are claimed to deliver superior performance, linearity and low power consumption. The LT5519 and LT5520 active mixers provide the ideal combination of low distortion, low LO (local oscillator) drive requirement, high port-to-port isolation, low conversion loss, and ease of use.

The LT5519 operates over the 0,7 GHz to 1,4 GHz range, while the LT5520 covers the 1,3 GHz to 2,3 GHz frequency bands without requiring external matching components. Moreover, their single-ended operation makes the design task easier. These devices have applications in cellular basestations, cable modem and video-on-demand headend equipment and high performance satellite transceivers.

An RF output transformer is integrated on-chip to enable single-ended output operation. The RF port is internally 50 Ω matched over the devices' full operating frequency range, so that no external frequency matching components are typically required. They have built-in LO amplifiers, eliminating the need for external LO buffers. The LO port is also designed for single-ended drive, and is internally 50 Ω matched, requiring no external matching components. When used in a radio transmitter, the devices' exceptionally high LO to RF port-to-port isolation greatly reduces the LO leakage to the RF output, which can cause severe interference to radio equipment in other frequency bands and non-compliance with regulatory emission requirements, says Linear. As a result, the total solution minimises costly RF filtering, reduces external components, and significantly lowers the overall cost.

The LT5519 and LT5520 operate from a single 5 V supply, and typically draw 60 mA when operating. In shutdown they consume 1 µA. They are offered in 4 x 4 mm 16-lead plastic QFN surface mount package.

For more information contact Memec SA, 011 897 8600.

Further reading:

Full sensor to cloud solution
CST Electronics Telecoms, Datacoms, Wireless, IoT
NeoCortec has demonstrated the seamless and rapid development of full sensor-to-cloud solutions using NeoMesh Click boards from MikroE and the IoTConnect cloud solution from Avnet.

Read more...

---

Long-range Wi-Fi HaLow module
TRX Electronics Telecoms, Datacoms, Wireless, IoT
One of Mouser’s newest products is the Morse Micro MM6108-MF08651-US Wi-Fi HaLow Module, which adheres to the IEEE 802.11ah standard.

Read more...

---

Quectel launches 3GPP NTN comms module
Quectel Wireless Solutions Telecoms, Datacoms, Wireless, IoT
Quectel Wireless Solutions has announced the Quectel BG95-S5 3GPP non-terrestrial network (NTN) satellite communication module.

Read more...

---

SIMCom’s A7673x series
Otto Wireless Solutions Telecoms, Datacoms, Wireless, IoT
SIMCom recently released the A7673X series, a Cat.1 bis module based on the ASR1606 chipset, that supports wireless communication modes of LTE-FDD, with a maximum downlink rate of 10 Mbps and a maximum uplink rate of 5 Mbps.

Read more...

---

Accelerating the commercialisation of the 5G IoT markets
Altron Arrow Editor's Choice Telecoms, Datacoms, Wireless, IoT
Fibocom unveils Non-Terrestrial Networks (NTN) module MA510-GL, enabling satellite and cellular connectivity to IoT applications.

Read more...

---

Long-range connectivity module
Avnet Silica Telecoms, Datacoms, Wireless, IoT
Digi XBee XR 868 RF Modules support the deployment of long-range connectivity applications, and support point-to-point and mesh networking protocols.

Read more...

---

4G LTE-M/NB-IoT connectivity reference design
iCorp Technologies Telecoms, Datacoms, Wireless, IoT
Developed around the industry-leading Nordic nRF9160 module, the platform comes complete with a newly-developed LTE antenna, ATRIA, which is pre-certified to operate over the full LTE-M and NB-IoT bands.

Read more...

---

Antennas to meet all connectivity requirements
Electrocomp Telecoms, Datacoms, Wireless, IoT
Kyocera AVX RF antennas meet today’s connectivity demands in the LTE, Wi-Fi, Bluetooth, GNSS, and ISM wireless bands, available in surface mount, patch or external configurations.

Read more...

---

Introducing SIMCom’s new A7673X series
Otto Wireless Solutions Telecoms, Datacoms, Wireless, IoT
SIMCom recently released the A7673X series, a Cat 1 bis module that supports LTE-FDD, with a maximum downlink rate of 10 Mbps and an uplink rate of 5 Mbps.

Read more...

---

18 W monolithic microwave amplifier
RFiber Solutions Telecoms, Datacoms, Wireless, IoT
The CHA8612-QDB is a two stage, high-power amplifier operating between 7,9 and 11 GHz. The monolithic microwave amplifier can typically provide 18 W of saturated output power and 40% of power-added efficiency.

Read more...

---