John Thornton

Paul and Gretchen have suffered enormous hardships on the Colony Ship Vanguard. They decide to try to make an escape. Forging ahead with the assistance of the artificial intelligence system Tiffany they devise a plan that might help them to get away from the death and destruction they have seen. Will they be successful as they make an attempt at escaping the Vanguard? Book 6 of the Colony Ship Vanguard series.

Inside the enormous Colony Ship Vanguard, tension and stress are everywhere. Strange and unknown things have been happening, and people are dying. What is causing this? Who is behind the threats? What is killing people and destroying equipment? What will happen to Brinley, Paul, and Gretchen as they face the enemy on the Vanguard? Book 5 of the Colony Ship Vanguard series.

Gretchen and Paul, refugees from a dead Earth, have found the old Colony Ship Vanguard. The ship is on its generations long journey to another solar system. The ship has suffered a severe epidemic and not everything is functional. The various biological habitats are vast and unexplored by Gretchen and Paul. What will they find as they explore and investigate the old ship? Will they find friends or enemies? Will anyone believe they really have come from Earth? What will their new lives be like, trapped on the Vanguard? Check out the audio version Book 2 of the Colony Ship Vanguard series.

Something is happening to the shuttles which fly from habitat to habitat around the Vanguard. In this third book of the Colony Ship Vanguard series, Paul and Gretchen continue to find out more about their surroundings. Brinley, the Free Ranger they saved, helps them as strange dangers happen, and mysteries are unraveled. Book 3 of the Colony Ship Vanguard series.

In this thrilling conclusion to the Colony Ship Eschaton series, the adventurers, crew, marines, and AIs look to incorporate a modified version of faster-than-light travel. Will it work? Will an old enemy try to stop them? Will they make it to the destination of the colony ship? What new dangers await? Who, if anyone, will survive to reach the destination of the colony ship? Book ten of the Colony Ship Eschaton series.

"PROXIMITY ALERT. DANGER TO THE SHIP. WARN ALL SYSTEMS. INVADERS. -ARES"One of the barely functional artificial intelligence systems on the Colony Ship Eschaton has sent a warning message. Who will receive it? What will happen? What has found the ship and why is an invasion happening? Can the people and systems inside of the Colony Ship confront this new foe? If so, how? Book 9 of the Colony Ship Escahton series.

Jamie and Michael are asked to help track down something that is destroying food in Habitat One of the Colony Ship Eschaton. What they find is a secret history of the ship itself. Cut off from everyone, except the dog Liduma, Jamie and Michael race to find all the pieces of this suppressed history. But something else is seeking it as well, and does not want Jamie and Michael to succeed. Will they make it back to report what they have learned about the building of the colony ship? Book 7 of the Colony Ship Eschaton series.

The aim of this book is to present the modern design principles and analysis of lens antennas. It gives graduates and RF/Microwave professionals the design insights in order to make full use of lens antennas. Why do we want to write a book in lens antennas? Because this topic has not been thoroughly publicized, its importance is underestimated. As antennas play a key role in communication systems, recent development in wireless communications would indeed benefit from the characteristics of lens antennas: low profile, and low cost etc. The major advantages of lens antennas are narrow beamwidth, high gain, low sidelobes and low noise temperature. Their structures can be more compact and weigh less than horn antennas and parabolic antennas. Lens antennas with their quasi-optical characteristics, also have low loss, particularly at near millimeter and submillimeter wavelengths where they have particular advantages. This book systematically conducts advanced and up-to-date treatment of lens antennas.

Michael and Jamie live in Dome 17. The last place safe for humans, or any life, on a dying earth. They are adventurers who have explored other domes, but everywhere else is dead. Will Dome 17 meet the same fate? The committee has a risky plan to try out unproven technologies: a faster than light scout ship, and teleportation. Both technologies have severe limits. Only two people can be carried aboard those FTL scout ships for a one-way journey, Teleportation can only work when a receiving pad is at the target location. So, can they make both these technologies work to save the last of humanity? One hundred years before, the people of earth had built gigantic colony ships with enclosed habitats. They were filled with flora and fauna and people. These ships were launched into space knowing it would take generations to reach other solar systems. Those space pioneers would live out their lives in transition to a new world. But the colony ship program was considered a dismal failure. All of the colony ships were considered lost. Will Michael and Jamie travel to one of the colony ships? Will it be a derelict? Or will it be a chance for a new home for humanity? What will they find as they try the recovery of a colony ship? Book 1 of the Colony Ship Eschaton series.