Wideband RF quadrature modulator

30 September 2009 Telecoms, Datacoms, Wireless, IoT

CML Microcircuits is targeting its new wideband RF I/Q modulator at the designers of cellular picocell/nanocell systems, satellite communications, broadband wireless access systems (WiMAX), microwave link transmitters (including ODFM/COFDM) and any other wideband wireless infrastructure systems requiring high-performance I/Q modulation.

The new CMX993W is a highly integrated wideband quadrature modulator, specifically tailored to offer 30 MHz to 1 GHz operation with excellent wideband noise performance across multiple modulations and bandwidths. It provides translation from baseband I/Q signals to a modulated RF signal; the wideband inputs (up to 100 MHz) can be driven single-ended or differentially. The chip also touts two integrated and matched double-balanced mixers, driven from a buffered, quadrature, split local oscillator. The ‘LO’ frequency is divided by either 2 or 4, with the mixers forming an I/Q vector modulator with programmable gain stages, offering 30 dB of gain control in 2,5 dB step increments.

Additional features include gain control, uncommitted differential amplifiers, a digital control interface and an SPI compatible interface for baseband devices of differing voltages. Advanced power management of individual internal blocks is also offered. The CMX993W operates at 3,3 V (1,8 V I/O) and comes in a 48-pin VQFN package. For designers wishing to experiment with the product in their designs, an evaluation kit (EV9930W) is available.

Further reading:

Industrial Ethernet time sensitive networking switch
RS South Africa Telecoms, Datacoms, Wireless, IoT
The ADIN3310 and ADIN6310 are 3-port and 6-port Gigabit Ethernet time sensitive networking (TSN) switches with integrated security primarily designed for industrial Ethernet applications.

Read more...

---

When it comes to long-term reliability of RF amplifier ICs, focus first on die junction temperature
Altron Arrow Editor's Choice Telecoms, Datacoms, Wireless, IoT
When considering the long-term reliability of integrated circuits, a common misconception is that high package or die thermal resistance is problematic. However, high or low thermal resistance, by itself, tells an incomplete story.

Read more...

---

Automotive-grade digital isolators
Telecoms, Datacoms, Wireless, IoT
The NSI83xx series of capacitive-based isolators from NOVOSENSE Microelectronics offer superior EOS resilience and minimal power noise susceptibility.

Read more...

---

Why bis means business for LTE Cat 1 IoT connections
NuVision Electronics Editor's Choice Telecoms, Datacoms, Wireless, IoT
Tomaž Petaros, product manager IoT EMEA at Quectel Wireless Solutions explains why the market for Cat 1bis IoT connections is getting busy.

Read more...

---

Wi-Fi in 2025: When is Wi-Fi 7 the answer?
iCorp Technologies Telecoms, Datacoms, Wireless, IoT
Wi-Fi 7 introduces multi-link operation and lower latency, a game-changing feature that allows devices to transmit and receive data across multiple frequency bands simultaneously to significantly reduce network congestion.

Read more...

---

Bluetooth Lite SoCs purpose built for IoT
NuVision Electronics Telecoms, Datacoms, Wireless, IoT
Whether it is enabling predictive maintenance on industrial equipment, tracking assets in dense environments, or running for years on a coin cell battery in ultra-low power sensors, developers need solutions that are lean, reliable, and ready to scale with emerging use cases.

Read more...

---

LTE Cat 1bis module
Otto Wireless Solutions Telecoms, Datacoms, Wireless, IoT
The A7673X LTE Cat 1bis module from SimCom is engineered to meet the growing demands of the IoT industry, offering exceptional performance and seamless integration.

Read more...

---

Track with precision
Electrocomp Telecoms, Datacoms, Wireless, IoT
KYOCERA AVX provides innovative antennas for cellular, LTE-M, NB-IoT, LoRa, GNSS, BLE, UWB, Wi-Fi, and future Satellite IoT.

Read more...

---

Wi-Fi 7 front-end module
RF Design Telecoms, Datacoms, Wireless, IoT
The Qorvo QPF4609 is an integrated front end module designed for 802.11be systems that has integrated matching, which minimises layout area.

Read more...

---

Multi-channel downconverter
Vepac Electronics Telecoms, Datacoms, Wireless, IoT
The Downconverter from Crane Aerospace is a converter that operates from 2 to 18 GHz and delivers a noise figure of 11 dB with an attenuation range of 25 dB.

Read more...

---