1 GHz programmable analog phase shifter for adaptive antennas

Chua, Ming Yam; Martin, K.

doi:10.1109/cicc.1998.694909

Cited by 46 publications

(21 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Phase shifting at the LO port is advantageous in that the phase-shifter loss does not directly deteriorate the receiver sensitivity. Additionally, the nonlinearity and loss of active phase shifters such as phase-interpolating implementations (e.g., [12]) can be more easily tolerated in the LO path compared to the signal path. However, since the undesired interferences are only rejected after the combining step at the IF, the RF amplifiers and mixers need to have a higher dynamic range than the ones in the signal-path phase-shifting scheme.…”

Section: Lo Path Phase Shiftingmentioning

confidence: 99%

A 24-GHz SiGe phased-array receiver-LO phase-shifting approach

Hashemi

Guan

Komijani

et al. 2005

IEEE Trans. Microwave Theory Techn.

192

102

View full text Add to dashboard Cite

Abstract-A local-oscillator phase-shifting approach is introduced to implement a fully integrated 24-GHz phased-array receiver using an SiGe technology. Sixteen phases of the local oscillator are generated in one oscillator core, resulting in a raw beam-forming accuracy of 4 bits. These phases are distributed to all eight receiving paths of the array by a symmetric network. The appropriate phase for each path is selected using high-frequency analog multiplexers. The raw beam-steering resolution of the array is better than 10 for a forward-looking angle, while the array spatial selectivity, without any amplitude correction, is better than 20 dB. The overall gain of the array is 61 dB, while the array improves the input signal-to-noise ratio by 9 dB.

show abstract

Section: Lo Path Phase Shiftingmentioning

confidence: 99%

A 24-GHz SiGe phased-array receiver-LO phase-shifting approach

Hashemi

Guan

Komijani

et al. 2005

IEEE Trans. Microwave Theory Techn.

192

102

View full text Add to dashboard Cite

show abstract

“…The difficulty with analog phase tuning arises when a constant amplitude over the entire phase tuning range is desired as shown by Eqs. (1) and (2). The digital phase tuner was designed to enable discrete tuning between 16 different phases equally spaced between 0° and 360°.…”

Section: Digital Phase Tunermentioning

confidence: 99%

“…The most straightforward way to maintain these relations is to pre-program the required voltage levels for a discrete number of phases using a digital-to-analog converter (DAC) [2]. Such an approach also addresses the effect of the non-linear gain introduced by the variable gain amplifier (VGA).…”

Section: Introductionmentioning

confidence: 99%

“…1 Phasor representation of the vector sum method (1) where A I and A Q denote the amplitudes of the in-phase and quadrature signals respectively. The resulting amplitude is then given by (2) The resulting amplitude will vary by a factor of should only one of the signals be changed to obtain phase shifting. For the required amplitude to remain constant throughout the phase tuning, the following relations for both A I [V I ] and A Q [V Q ] should hold:…”

Section: Introductionmentioning

confidence: 99%

“…In the past decade, work has been done on phase shifters that obtain phase shifting through the vector sum of orthogonal signals [2][3][4][5][6]. These phase shifters can be integrated onto the same circuit as the power amplifier (PA) of most portable wireless devices.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A 4.3 GHz BiCMOS VCO with multiple 360° variable phase outputs using the vector sum method

Opperman

Sinha

2012

Analog Integr Circ Sig Process

View full text Add to dashboard Cite

A 4.3 GHz voltage controlled oscillator (VCO) with multiple independently tunable phase outputs is presented. The VCO is realized by coupling two LC oscillators together in order to obtain quadrature signals and is tunable between 4.12 and 4.74 GHz. The variable phase outputs are achieved by varying the amplitudes of the in-phase and quadrature signals independently and then combining these signals together. By using multiple Gilbert cells as variable gain amplifiers (VGAs), multiple tunable phase outputs are achieved with the use of only one quadrature VCO. The VGAs are controlled using a custom non-linear digital-toanalog converter. The entire circuit is designed using a 3.3 V SiGe BiCMOS process. A maximum phase noise of −108.17 dBc/Hz was measured over the entire tuning range at a 1 MHz offset. The outputs of the VCO can be used as local oscillators that achieve phase shifting during radio frequency up or down conversion.

show abstract

L‐band 360° broad‐bandwidth monolithic analog phase shifter

Liu

Pun

Tian

2003

Micro & Optical Tech Letters

View full text Add to dashboard Cite

An L‐band 360° broad‐bandwidth analog phase shifter is designed using varactor. New design equations for expanding bandwidth and improving linear phase‐shift are derived and applied to performances optimization in one circuit. The analog phase shifter is fabricated using MIC and SMT technologies. At 1.2 ∼ 2.0 GHz (L‐band), total phase‐shift of 360° and linear deviation of less than ±2.5% were obtained, and the insertion loss varied less than 2 dB across the band. © 2003 Wiley Periodicals, Inc. Microwave Opt Technol Lett 36: 164–166, 2003; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.10709

show abstract

1 GHz programmable analog phase shifter for adaptive antennas

Cited by 46 publications

References 5 publications

A 24-GHz SiGe phased-array receiver-LO phase-shifting approach

A 24-GHz SiGe phased-array receiver-LO phase-shifting approach

A 4.3 GHz BiCMOS VCO with multiple 360° variable phase outputs using the vector sum method

L‐band 360° broad‐bandwidth monolithic analog phase shifter

Contact Info

Product

Resources

About