John A Gill

US Patent:

20100328779, Dec 30, 2010

Filed:

Jun 30, 2010

Appl. No.:

12/828068

Inventors:

Nuria Llombart Juan - Alboraya, ES
Choonsup Lee - Torrance CA, US
Goutam Chattopadhyay - Pasadena CA, US
John J. Gill - La Crescenta CA, US
Anders Skalare - Pasadena CA, US
Peter H. Siegel - La Canada CA, US

Assignee:

California Institute of Technolology - Pasadena CA

International Classification:

G02B 27/12
G02B 3/00
C03C 15/00

US Classification:

359619, 359664, 216 26

Abstract:

An antenna element suitable for integrated arrays at terahertz frequencies is disclosed. The antenna element comprises an extended spherical (e.g. hemispherical) semiconductor lens, e.g. silicon, antenna fed by a leaky wave waveguide feed. The extended spherical lens comprises a substantially spherical lens adjacent a substantially planar lens extension. A couple of TE/TM leaky wave modes are excited in a resonant cavity formed between a ground plane and the substantially planar lens extension by a waveguide block coupled to the ground plane. Due to these modes, the primary feed radiates inside the lens with a directive pattern that illuminates a small sector of the lens. The antenna structure is compatible with known semiconductor fabrication technology and enables production of large format imaging arrays.

US Patent:

20120280742, Nov 8, 2012

Filed:

May 2, 2012

Appl. No.:

13/462679

Inventors:

Goutam Chattopadhyay - Pasadena CA, US
Erich T. Schlecht - Pasadena CA, US
Choonsup Lee - La Palma CA, US
Robert H. Lin - Chino CA, US
John J. Gill - La Crescenta CA, US
Seth Sin - Pasadena CA, US
Imran Mehdi - South Pasadena CA, US

Assignee:

California Institute of Technology - Pasadena CA

International Classification:

G06G 7/12
H01L 21/329

US Classification:

327355, 438478, 257E21359

Abstract:

A coplanar waveguide (CPW) based subharmonic mixer working at 670 GHz using GaAs Schottky diodes. One example of the mixer has a LO input, an RF input and an IF output. Another possible mixer has a LO input, and IF input and an RF output. Each input or output is connected to a coplanar waveguide with a matching network. A pair of antiparallel diodes provides a signal at twice the LO frequency, which is then mixed with a second signal to provide signals having sum and difference frequencies. The output signal of interest is received after passing through a bandpass filter tuned to the frequency range of interest.

US Patent:

20210355519, Nov 18, 2021

Filed:

May 13, 2021

Appl. No.:

17/320021

Inventors:

- San Diego CA, US
John E. Gill - San Marcos CA, US
Daniel G. Gibson - Carlsbad CA, US
Lixia Fu - San Diego CA, US

International Classification:

C12P 19/34

Abstract:

The invention provides methods of synthesizing a product DNA molecule having a desired and/or defined sequence. The methods involve annealing at least one long oligonucleotide and at least one short oligonucleotide to at least one anchor strand having a sequence at least partially complementary to the at least one long and at least one short oligonucleotide. After annealing, at least one long oligonucleotide bound to an anchor strand abuts at least one short oligonucleotide bound to the same anchor strand. The anchor strand has one or more non-standard nucleotides, and optionally one or more degenerate nucleotides. The method involves ligating the abutting at least one long oligonucleotide and at least one short oligonucleotide to form a dsDNA molecule. The invention also provides methods of synthesizing DNA molecules by assembling oligonucleotide members of a library that contains less than 20,000 members that can be assembled into all possible DNA sequences.

US Patent:

20210283615, Sep 16, 2021

Filed:

May 14, 2021

Appl. No.:

17/321301

Inventors:

- San Diego CA, US
Daniel Gibson - Carlsbad CA, US
John E. Gill - San Marcos CA, US

International Classification:

B01L 7/00
C12N 15/10
C07K 14/005
C12N 7/00

Abstract:

The present invention provides a system for receiving biological sequence information and activating the synthesis of a biological entity. The system has a receiving unit for receiving a signal encoding biological sequence information transmitted from a transmitting unit. The transmitting unit can be present at a remote location from the receiving unit. The system also has an assembly unit connected to the receiving unit, and the assembly unit assembles the biological entity according to the biological sequence information. Thus, according to the present invention biological sequence information can be digitally transmitted to a remote location and the information converted into a biological entity, for example a protein useful as a vaccine, immediately upon being received by the receiving unit and without further human intervention after preparing the system for receipt of the information. The invention is useful, for example, for rapidly responding to viral and other biological threats that are specific to a particular locale.

US Patent:

20200313271, Oct 1, 2020

Filed:

May 19, 2020

Appl. No.:

16/878207

Inventors:

- Pasadena CA, US
Imran Mehdi - South Pasadena CA, US
Choonsup Lee - La Palma CA, US
John J. Gill - La Crescenta CA, US
Cecile D. Jung-Kubiak - Pasadena, FR
Nuria Llombart - Madrid, ES

Assignee:

California Institute of Technology - Pasadena CA

International Classification:

H01P 11/00
H01Q 15/08
H01Q 19/06

Abstract:

A set of antenna geometries for use in integrated arrays at terahertz frequencies are described. Two fabrication techniques to construct such antennas are presented. The first technique uses an advanced laser micro-fabrication, allowing fabricating advanced 3D geometries. The second technique uses photolithographic processes, allowing the fabrication of arrays on a single wafer in parallel.

US Patent:

20170320061, Nov 9, 2017

Filed:

Jul 19, 2017

Appl. No.:

15/654306

Inventors:

- La Jolla CA, US
Daniel Gibson - Carlsbad CA, US
John E. Gill - San Marcos CA, US

International Classification:

B01L 7/00
C07K 14/005
C12N 7/00
C12N 15/10
C12N 15/10
C12P 19/34

Abstract:

The present invention provides a system for receiving biological sequence information and activating the synthesis of a biological entity. The system has a receiving unit for receiving a signal encoding biological sequence information transmitted from a transmitting unit. The transmitting unit can be present at a remote location from the receiving unit. The system also has an assembly unit connected to the receiving unit, and the assembly unit assembles the biological entity according to the biological sequence information. Thus, according to the present invention biological sequence information can be digitally transmitted to a remote location and the information converted into a biological entity, for example a protein useful as a vaccine, immediately upon being received by the receiving unit and without further human intervention after preparing the system for receipt of the information. The invention is useful, for example, for rapidly responding to viral and other biological threats that are specific to a particular locale.

US Patent:

20170045065, Feb 16, 2017

Filed:

Oct 28, 2016

Appl. No.:

15/337745

Inventors:

- PASADENA CA, US
Theodore RECK - PASADENA CA, US
Bertrand THOMAS - BONN, DE
Robert H. LIN - CHINO CA, US
Alejandro PERALTA - HUNTINGTON BEACH CA, US
John J. GILL - LA CRESCENTA CA, US
Choonsup LEE - LA PALMA CA, US
Jose V. SILES - PASADENA CA, US
Risaku TODA - GLENDALE CA, US
Goutam CHATTOPADHYAY - PASADENA CA, US
Ken B. COOPER - GLENDALE CA, US
Imran MEHDI - SOUTH PASADENA CA, US

International Classification:

F16B 5/02

Abstract:

A silicon alignment pin is used to align successive layer of component made in semiconductor chips and/or metallic components to make easier the assembly of devices having a layered structure. The pin is made as a compressible structure which can be squeezed to reduce its outer diameter, have one end fit into a corresponding alignment pocket or cavity defined in a layer of material to be assembled into a layered structure, and then allowed to expand to produce an interference fit with the cavity. The other end can then be inserted into a corresponding cavity defined in a surface of a second layer of material that mates with the first layer. The two layers are in registry when the pin is mated to both. Multiple layers can be assembled to create a multilayer structure. Examples of such devices are presented.

US Patent:

20150300884, Oct 22, 2015

Filed:

May 24, 2013

Appl. No.:

13/902529

Inventors:

Theodore Reck - Pasadena CA, US
Ken B. Cooper - Glendale CA, US
Choonsup Lee - La Palma CA, US
John J. Gill - La Crescenta CA, US

Assignee:

CALIFORNIA INSTITUTE OF TECHNOLOGY - PASADENA CA

International Classification:

G01J 5/20
G01S 17/02

Abstract:

A multi-pixel terahertz transceiver is constructed using a stack of semiconductor layers that communicate using vias defined within the semiconductor layers. By using a stack of semiconductor layers, the various electrical functions of each layer can be tested easily without having to assemble the entire transceiver. In addition, the design allows the production of a transceiver having pixels set 10 mm apart.