Emre Ozeren

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This paper presents a 4-bit digitally controlled phase shifter for X-band (8-12.5 GHz) phased-arrays, implemented in 0.25-μm SiGe BiCMOS process. Distributed active switches are utilized in first three bits. On-chip inductances are used to provide 22.5° phase shift steps. The placement and the geometry of these inductances are optimized for(More)
In this paper, an integrated 2.2–5.7GHz multi-band differential LC VCO for multi-standard wireless communication systems was designed utilizing 0.35mm SiGe BiCMOS technology. The topology, which combines the switching inductors and capacitors together in the same circuit, is a novel approach for wideband VCOs. Based on the post-layout simulation results,(More)
This paper presents a 4-bit passive phase shifter for X-band (8-12 GHz) phased-arrays, implemented in 0.25-μm SiGe BiCMOS process. All bits are digitally controlled. The 22.5° and 45° bits are based on switched low-pass network while the 90° and 180° bits are based on switching between high-pass/low-pass filters. Filters(More)
This paper presents design and measurement results of a high dynamic range (HDR) X-band (8-12 GHz) low noise amplifier (LNA) implemented in 130nm silicon-germanium (SiGe) BiCMOS process technology targeting phased array RADAR applications. A single-stage hetero-junction bipolar transistor (HBT) and inductively degenerated cascode topology is used in order(More)
This paper presents a fractional N frequency synthesizer which covers WLAN and WiMAX frequencies on a single chip. The synthesizer is fully integrated in 0.35µm BiCMOS AMS technology except crystal oscillator. The synthesizer operates at four frequency bands (3.101–3.352GHz, 3.379–3.727GHz, 3.7–4.2GHz, 4.5–5.321GHz) to(More)
This paper presents a Medium Power Amplifier (MPA) for X-Band Phased Array RADAR applications in 0.25μm SiGe technology. The MPA is designed such that it achieves high output power and low noise simultaneously that enables its use in Transmitter/Receiver (T/R) core module as a Low Noise Amplifier (LNA). The MPA achieves 23.6dB peak gain and 17.3dB(More)
This paper presents a variable phase and gain amplifier (VPGA), featured in a 4-bit digitally controlled phase shifter, that enables significant phase error reduction. The functionality of the VPGA is demonstrated by utilizing it between the third and fourth bits of a digitally controlled phase shifter. The first three bits are implemented using distributed(More)
A new RNA aptamer based affinity biosensor for CReactive Protein (CRP), a risk marker for cardiovascular disease was developed using interdigitated capacitor (IDC), integrated in Voltage Controlled Oscillator (VCO) and output signal is amplified using Single Stage Power Amplifier (PA) for transmitting signal to receiver at Industrial, Scientific and Medical(More)
This paper presents a 6-bit active phase shifter using a new vector-sum method for X-band (8-12 GHz) phased arrays in 0.13 μm SiGe BiCMOS process. An RC filter is used to generate two orthogonal vectors which are then fed into four VGAs, two using the common-base and two using the common-emitter topology. This generates 4 vectors of 0°,(More)
This paper presents an SPDT switch which is designed to operate at 8-12 GHz frequency range (X-Band), as a sub module of the front end circuit of a phased array radar. The switch distinguishes itself from its counterparts with its larger frequency range and higher isolation that is uniformly distributed over its bandwidth. It is fabricated using(More)
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