Lumped element-based P-band In-Quadrature phase Mixer

This work describes a lumped element based compact In and Quadrature phase (IQ) Mixer designed and realized at 450±25 MHz. This mixer is designed on wideband modulation approach using single balanced topology and transmission line section is designed using equivalent “pi” lumped-element network for miniaturization. The realized mixer exhibits worst case conversion loss 10 dB, LO isolation better than 30 dB and rejection of better than 35 dBc for 3rd order (1,2) intermodulation product over 11% of fractional bandwidth. The realized performance is better with respect to spurious suppression, LO power requirement, I/Q bandwidth, Isolation, amplitude imbalance and phase imbalance against the procured one. The reported IQ mixer is fabrication friendly and a cost-effective indigenous space component.