Figure 1 shows a classic heterodyne receiver block diagram. It consists of bandpass filters (BPFs), a low-noise amplifier (LNA), mixer and local oscillator (LO), an IF amplifier, and ADC …

A block diagram of the direct conversion receiver. The conversion of the modulated signal to baseband is done in a single frequency conversion. This avoids the complexity of the …

Mar 20, 2023 · A block diagram for a zero-IF architecture is drawn in the figure below. After the preselection filter and low noise amplifier, downconversion to baseband is accomplished …

In the simplest form, the direct-conversion receiver can be consid-ered a superheterodyne receiver where the intermediate frequency (IF) is direct current (dc) or 0 Hz. With an IF of dc, …

designing the Analog front end of a bluetooth receiver. The motivation behind the design is to achieve the most important requirements for a bluetooth receiver namely compactness, . igh …

Direct conversion receivers require only low pass filtering in the analogue baseband. This architecture has been applied for multi-mode transceiver.

A dual-mode direct-conversion 802.11b/Bluetooth receiver is integrated from LNA to ADC in a 0.25μm BiCMOS process. The baseband circuits are programmable to accommodate both …

Direct conversion exhibits potential for compact, low power Radio Frequency implementation devices. The present work will be very useful for the design of a simple and low cost chip …

Without image signals and mixing spurs, a direct conversion receiver can be very flexible. A designer can easily change the LO/RF frequency without affecting other parts of the system.

ABSTRACT A dual-band direct conversion receiver based on additive mixing architecture for low-cost and multi-mode wireless communication systems is proposed. The proposed receiver …