Teledyne SP Devices

IQE - Digital I/Q Imbalance correction IP for Wireless Applications

The IQE 100 is a wideband imbalance correction IP, that digitally match in-phase and quadrature signal paths in radio architectures employing complex demodulators such as direct down-conversion receivers. The IQE 100 IP core is available as FPGA IP and as a GDSII macro block.

iqe_block_diagram.pngDistortion due to signal path imbalances is attenuated by 20 - 50 dB covering up to 100 MHz signal bandwidth. The IP is fully autonomous and offers a unique balancing performance for multi-band radio solutions. IQE 100 does not require any specific calibration signal nor does it interrupt normal operation of the receiver.

test2e 1 webThe figure depicts a complex baseband spectrum of two wideband signals. The IQ imbalance creates images of the two signals which cause interference. After the IQE 100 IP are the images attenuated.


"The technical and intellectual support from the team at Teledyne SP Devices has been playing an important role in our research."

Associate Professor at Hong Kong University (HKU)
who has implemented a system supporting line scan rates of 10M lines/s

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