Abstract: The present invention relates to a securities trading system that utilizes a distributed blockchain ledger to conduct security transactions. Users are provided with cryptographic wallets that enable the users to access a peer-to-peer network of computing nodes on which the distributed blockchain ledger is managed. The securities made available through the network may be stored directly on the blockchain ledger itself. Smart contracts may be utilized to transfer the securities among the users and to verify that all transactions are in compliance with applicable regulatory rules and other restrictions.

Abstract: The present invention relates to a securities trading system that utilizes a distributed blockchain ledger to conduct security transactions. Users are provided with cryptographic wallets that enable the users to access a peer-to-peer network of computing nodes on which the distributed blockchain ledger is managed. The securities made available through the network may be stored directly on the blockchain ledger itself. Smart contracts may be utilized to transfer the securities among the users and to verify that all transactions are in compliance with applicable regulatory rules and other restrictions.

Abstract: A monopole antenna is mounted on a ground plane and incorporates a radiating structure in the form of a blade perpendicular to the ground plane, for loading the antenna. An elevated feed is formed by a biconical central post between the blade and the ground plane. Tuning is also accomplished by a capacitive strips spanning the biconical central post and by outboard inductive posts which connect between the ground plane and the blade to provide shunt inductance. Alternatively, additional tuning may be accomplished by a circuit between upper and lower portions of the central post.

Abstract: A monopole antenna is mounted on a ground plane and incorporates a radiating structure such as a disc or hollow cap parallel to the ground plane, for loading the antenna. An elevated feed is formed by a biconical central post between the radiating structure and the ground plane. Tuning is also accomplished by a partial or total circumferential dielectric (which may also function as a support) having an outer electrically conducting sheet spaced apart from the central post to provide shunt capacitance, and by outboard inductive posts which connect between the ground plane and the radiating structure to provide shunt inductance. Alternatively, additional tuning may be accomplished by a circuit between the upper and lower portions of the central post.